LUIXX
Western Asset Institutional U.S. Treasury Obligations Money Market Fund
NAV 1
$1.0000
$0.0000 (0.00%) Fund Level Market NAV
$1.0000
Overall Morningstar Rating
Rating Category: Money Market-Taxable

The fund's overall Morningstar Rating measures risk-adjusted returns and is derived from a weighted average of the performance figures associated with its 3-, 5- and 10-year (if applicable) rating metrics.
Morningstar Style Box
| High | Quality | |||
|---|---|---|---|---|
| Medium | ||||
| Low | ||||
| LTD | MOD | EXT | ||
| Duration | ||||
Source: Morningstar®. The style box reveals a fund's investment style. For equity funds, the vertical axis shows the market capitalization of the long stocks owned, and the horizontal axis shows the investment style (value, blend, or growth). For fixed income funds, the vertical axis shows the credit quality based on credit ratings and the horizontal axis shows interest-rate sensitivity as measured by effective duration. Placement is determined by fund portfolio holding figures most recently entered into Morningstar's database and corresponding market conditions. Shaded areas show the past 3 years of quarterly data. Past performance does not guarantee future results.
Historical Morningstar Ratings
| Years | 3 |
| Ratings | |
| Number of Funds In Category |
| Years | 5 |
| Ratings | |
| Number of Funds In Category |
| Years | 10 |
| Ratings | |
| Number of Funds In Category |
©2025 Morningstar, Inc. All rights reserved. The information contained herein: (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed and (3) is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information.
Overview

Fund Description
- Seeks to provide liquidity and maximum current income consistent with preservation of capital.
- Typically invests all of its assets in direct obligations of the U.S. Treasury and in repurchase agreements
- The portfolio is diversified among a wide array of U.S. Treasury securities, including U.S. Treasury bills, notes and bonds and in repurchase agreements secured by these obligations
Fund Information
Performance
- Average Annual Total Returns
- Calendar Year Returns
- Cumulative Total Returns
Average Annual Total Returns
Average Annual Total Returns
2025
Chart
Month End As of 09/30/2025 | 1 Year | 3 Years | 5 Years | 10 Years | Since Inception 09/03/2013 | |
|---|---|---|---|---|---|---|
| Institutional Shares - Without Sales Charge (NAV) (%) | 4.37 | 4.75 | 2.96 | 1.98 | 1.64 | |
| Institutional Shares - With Sales Charge (POP) (%) | 4.37 | 4.75 | 2.96 | 1.98 | 1.64 | |
| FTSE 1 Month U.S. Treasury Bill Index (%) | 4.53 | 4.90 | 3.05 | 2.07 | 1.71 |
Performance data quoted represents past performance, which does not guarantee future results. Current performance may be lower or higher than the figures shown. Principal value and investment returns will fluctuate, and investors' shares, when redeemed, may be worth more or less than the original cost. Performance would have been lower if fees had not been waived in various periods. Total returns assume the reinvestment of all distributions and the deduction of all Fund expenses. Returns for periods of less than one year are not annualized.
Calendar Year Returns
Calendar Year Returns
Chart
Month End As of 09/30/2025 | YTD | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | Performance Inception Date | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Institutional Shares - Without Sales Charge (NAV) (%) | 3.18 | 5.15 | 5.03 | 1.54 | 0.02 | 0.30 | 2.04 | 1.67 | 0.73 | 0.28 | 0.03 | 09/03/2013 | |
| Institutional Shares - With Sales Charge (POP) (%) | 3.18 | 5.15 | 5.03 | 1.54 | 0.02 | 0.30 | 2.04 | 1.67 | 0.73 | 0.28 | 0.03 | 09/03/2013 | |
| FTSE 1 Month U.S. Treasury Bill Index (%) | 3.29 | 5.38 | 5.13 | 1.48 | 0.04 | 0.45 | 2.20 | 1.82 | 0.80 | 0.21 | 0.02 | — |
Performance data quoted represents past performance, which does not guarantee future results. Current performance may be lower or higher than the figures shown. Principal value and investment returns will fluctuate, and investors' shares, when redeemed, may be worth more or less than the original cost. Performance would have been lower if fees had not been waived in various periods. Total returns assume the reinvestment of all distributions and the deduction of all Fund expenses. Returns for periods of less than one year are not annualized.
Cumulative Total Returns
Cumulative Total Returns
The hypothetical growth scenario of $10,000 does not reflect the deduction of brokerage commissions or taxes that investors may pay on distributions or the sale of shares. Had they been reflected hypothetical values would be lower.
2013
2025
Chart
Month End As of 09/30/2025 | YTD | 1 Month | 3 Months | 6 Months | 1 Year | 3 Years | 5 Years | 10 Years | 15 Years | Since Inception 09/03/2013 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Institutional Shares - Without Sales Charge (NAV) (%) | 3.18 | 0.34 | 1.05 | 2.11 | 4.37 | 14.95 | 15.71 | 21.63 | — | 21.71 | |
| Institutional Shares - With Sales Charge (POP) (%) | 3.18 | 0.34 | 1.05 | 2.11 | 4.37 | 14.95 | 15.71 | 21.63 | — | 21.71 | |
| FTSE 1 Month U.S. Treasury Bill Index (%) | 3.29 | 0.36 | 1.10 | 2.19 | 4.53 | 15.44 | 16.20 | 22.68 | — | 22.73 |
Historical Cumulative Total Returns
2025
Date Selected As of 09/30/2025 | YTD | 1 Month | 3 Months | 6 Months | 1 Year | 3 Years | 5 Years | 10 Years | 15 Years | Since Inception 09/03/2013 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Institutional Shares - Without Sales Charge (NAV) (%) | 3.18 | 0.34 | 1.05 | 2.11 | 4.37 | 14.95 | 15.71 | 21.63 | — | 21.71 | |
| Institutional Shares - With Sales Charge (POP) (%) | 3.18 | 0.34 | 1.05 | 2.11 | 4.37 | 14.95 | 15.71 | 21.63 | — | 21.71 | |
| FTSE 1 Month U.S. Treasury Bill Index (%) | 3.29 | 0.36 | 1.10 | 2.19 | 4.53 | 15.44 | 16.20 | 22.68 | — | 22.73 |
Performance data quoted represents past performance, which does not guarantee future results. Current performance may be lower or higher than the figures shown. Principal value and investment returns will fluctuate, and investors' shares, when redeemed, may be worth more or less than the original cost. Performance would have been lower if fees had not been waived in various periods. Total returns assume the reinvestment of all distributions and the deduction of all Fund expenses. Returns for periods of less than one year are not annualized.
Portfolio
Portfolio Statistics
| As of Date | Weighted Average Life | Weighted Average Maturity |
|---|---|---|
| 09/30/2025 | 72 Days | 36 Days |
| 08/31/2025 | 66 Days | 27 Days |
| 07/31/2025 | 78 Days | 32 Days |
| 06/30/2025 | 72 Days | 24 Days |
| 05/31/2025 | 55 Days | 20 Days |
Portfolio Allocations
Sector Allocation
Chart
| Fund | ||
|---|---|---|
| U.S. Treasury Debt | 55.23% | |
| U.S. Treasury Repurchase Agreement | 44.95% |
Portfolio Holdings
Holdings
- 09/30/2025
- 08/31/2025
- 07/31/2025
- 06/30/2025
- 05/31/2025
- 04/30/2025
- 03/31/2025
The information shown above relates to U.S. Treasury Obligations Portfolio ("the Portfolio"), the registered investment company in which the Fund invests all of its investable assets. The Fund utilizes a master/feeder structure by investing all of its assets in a master portfolio. Assets are reported at the master portfolio level. The data in the “Value” column represents the market value of the Portfolio’s investments.
The Portfolio's investments are valued at amortized cost, which approximates market value, in accordance with Rule 2a-7 under the Investment Company Act of 1940 (the “1940 Act”). The amortized cost method of valuation involves valuing portfolio securities at their cost and thereafter assuming a constant amortization to maturity of any discount or premium.
The Portfolio's use of amortized cost is subject to its compliance with certain conditions as specified by Rule 2a-7 under the 1940 Act. The Portfolio continues to meet the requirements of Rule 2a-7 that permit it to utilize amortized cost to value its securities.
Portfolio holdings are subject to change at any time. Percentages are based on total investments. This information is provided for information purposes only and should not be construed as a recommendation to purchase or sell any security.
CUSIP identifiers have been provided by CUSIP Global Services, managed on behalf of the American Bankers Association by Standard & Poor's Financial Services, LLC, and are not for use or dissemination in a manner that would serve as a substitute for any CUSIP service. The CUSIP Database, © American Bankers Association. "CUSIP" is a registered trademark of the American Bankers Association.
Distributions & Tax
- Distributions
- Tax Information
Distributions
Distribution Schedules
Rates and Yields
7-Day Current Yield
7-Day Effective Yield
Distributions Per Share
Current Year Distributions Per Share
| Record Date | Ex-Dividend Date | Reinvestment Date | Payable Date | Reinvestment Price | Long-Term Capital Gains | Short-Term Capital Gains | Income | Total Distribution Per Share |
|---|---|---|---|---|---|---|---|---|
| 12/15/2025 | 12/16/2025 | 12/16/2025 | 12/16/2025 | — | $0.0000-$0.0000 Estimates | $0.0000-$0.0000 Estimates | — | — Estimates |
| 10/31/2025 | 10/31/2025 | 10/31/2025 | 10/31/2025 | $1.00 | — | — | $0.0033644 | $0.0033644 |
| 09/30/2025 | 09/30/2025 | 09/30/2025 | 09/30/2025 | $1.00 | — | — | $0.00334875 | $0.00334875 |
| 08/29/2025 | 08/29/2025 | 08/29/2025 | 08/29/2025 | $1.00 | — | — | $0.00354005 | $0.00354005 |
| 07/31/2025 | 07/31/2025 | 07/31/2025 | 07/31/2025 | $1.00 | — | — | $0.00354897 | $0.00354897 |
| 06/30/2025 | 06/30/2025 | 06/30/2025 | 06/30/2025 | $1.00 | — | — | $0.00342905 | $0.00342905 |
| 05/30/2025 | 05/30/2025 | 05/30/2025 | 05/30/2025 | $1.00 | — | — | $0.00355501 | $0.00355501 |
| 04/30/2025 | 04/30/2025 | 04/30/2025 | 04/30/2025 | $1.00 | — | — | $0.00345254 | $0.00345254 |
| 03/31/2025 | 03/31/2025 | 03/31/2025 | 03/31/2025 | $1.00 | — | — | $0.00357219 | $0.00357219 |
| 02/28/2025 | 02/28/2025 | 02/28/2025 | 02/28/2025 | $1.00 | — | — | $0.00324943 | $0.00324943 |
| 01/31/2025 | 01/31/2025 | 01/31/2025 | 01/31/2025 | $1.00 | — | — | $0.00361664 | $0.00361664 |
Historical Distributions Per Share
- 2024
- 2023
- 2022
- 2021
- 2020
- 2019
- 2018
- 2017
- 2016
- 2015
- 2014
- 2013
- Since Inception
| Record Date | Ex-Dividend Date | Reinvestment Date | Payable Date | Reinvestment Price | Long-Term Capital Gains | Short-Term Capital Gains | Income | Total Distribution Per Share |
|---|---|---|---|---|---|---|---|---|
| 12/31/2024 | 12/31/2024 | 12/31/2024 | 12/31/2024 | $1.00 | — | — | $0.00374918 | $0.00374918 |
| 11/29/2024 | 11/29/2024 | 11/29/2024 | 11/29/2024 | $1.00 | — | — | $0.00378129 | $0.00378129 |
| 10/31/2024 | 10/31/2024 | 10/31/2024 | 10/31/2024 | $1.00 | — | — | $0.00403304 | $0.00403304 |
| 09/30/2024 | 09/30/2024 | 09/30/2024 | 09/30/2024 | $1.00 | — | — | $0.00410551 | $0.00410551 |
| 08/30/2024 | 08/30/2024 | 08/30/2024 | 08/30/2024 | $1.00 | — | — | $0.00437534 | $0.00437534 |
| 07/31/2024 | 07/31/2024 | 07/31/2024 | 07/31/2024 | $1.00 | — | — | $0.00440084 | $0.00440084 |
| 06/28/2024 | 06/28/2024 | 06/28/2024 | 06/28/2024 | $1.00 | — | — | $0.00425336 | $0.00425336 |
| 05/31/2024 | 05/31/2024 | 05/31/2024 | 05/31/2024 | $1.00 | — | — | $0.00439402 | $0.00439402 |
| 04/30/2024 | 04/30/2024 | 04/30/2024 | 04/30/2024 | $1.00 | — | — | $0.0042442 | $0.0042442 |
| 03/28/2024 | 03/28/2024 | 03/28/2024 | 03/29/2024 | $1.00 | — | — | $0.00439738 | $0.00439738 |
| 02/29/2024 | 02/29/2024 | 02/29/2024 | 02/29/2024 | $1.00 | — | — | $0.0041215 | $0.0041215 |
| 01/31/2024 | 01/31/2024 | 01/31/2024 | 01/31/2024 | $1.00 | — | — | $0.00441604 | $0.00441604 |
| 12/29/2023 | 12/29/2023 | 12/29/2023 | 12/29/2023 | $1.00 | — | — | $0.00444392 | $0.00444392 |
| 11/30/2023 | 11/30/2023 | 11/30/2023 | 11/30/2023 | $1.00 | — | — | $0.00430289 | $0.00430289 |
| 10/31/2023 | 10/31/2023 | 10/31/2023 | 10/31/2023 | $1.00 | — | — | $0.00443779 | $0.00443779 |
| 09/29/2023 | 09/29/2023 | 09/29/2023 | 09/29/2023 | $1.00 | — | — | $0.00428209 | $0.00428209 |
| 08/31/2023 | 08/31/2023 | 08/31/2023 | 08/31/2023 | $1.00 | — | — | $0.00441236 | $0.00441236 |
| 07/31/2023 | 07/31/2023 | 07/31/2023 | 07/31/2023 | $1.00 | — | — | $0.00427506 | $0.00427506 |
| 06/30/2023 | 06/30/2023 | 06/30/2023 | 07/28/2023 | $1.00 | — | — | $0.00436805 | $0.00436805 |
| 05/31/2023 | 05/31/2023 | 05/31/2023 | 05/31/2023 | $1.00 | — | — | $0.00420157 | $0.00420157 |
| 04/28/2023 | 04/28/2023 | 04/28/2023 | 04/28/2023 | $1.00 | — | — | $0.00388119 | $0.00388119 |
| 03/31/2023 | 03/31/2023 | 03/31/2023 | 03/31/2023 | $1.00 | — | — | $0.0038533 | $0.0038533 |
| 02/28/2023 | 02/28/2023 | 02/28/2023 | 02/28/2023 | $1.00 | — | — | $0.00341556 | $0.00341556 |
| 01/31/2023 | 01/31/2023 | 01/31/2023 | 01/31/2023 | $1.00 | — | — | $0.00356143 | $0.00356143 |
| 12/30/2022 | 12/30/2022 | 12/30/2022 | 12/30/2022 | $1.00 | — | — | $0.00336607 | $0.00336607 |
| 11/30/2022 | 11/30/2022 | 11/30/2022 | 11/30/2022 | $1.00 | — | — | $0.00300899 | $0.00300899 |
| 10/31/2022 | 10/31/2022 | 10/31/2022 | 10/31/2022 | $1.00 | — | — | $0.00250273 | $0.00250273 |
| 09/30/2022 | 09/30/2022 | 09/30/2022 | 09/30/2022 | $1.00 | — | — | $0.00197138 | $0.00197138 |
| 08/31/2022 | 08/31/2022 | 08/31/2022 | 08/31/2022 | $1.00 | — | — | $0.00179133 | $0.00179133 |
| 07/29/2022 | 07/29/2022 | 07/29/2022 | 07/29/2022 | $1.00 | — | — | $0.00122697 | $0.00122697 |
| 06/30/2022 | 06/30/2022 | 06/30/2022 | 06/30/2022 | $1.00 | — | — | $0.00073702 | $0.00073702 |
| 05/31/2022 | 05/31/2022 | 05/31/2022 | 05/31/2022 | $1.00 | — | — | $0.00039518 | $0.00039518 |
| 04/29/2022 | 04/29/2022 | 04/29/2022 | 04/29/2022 | $1.00 | — | — | $0.00017958 | $0.00017958 |
| 03/31/2022 | 03/31/2022 | 03/31/2022 | 03/31/2022 | $1.00 | — | — | $0.00005982 | $0.00005982 |
| 02/28/2022 | 02/28/2022 | 02/28/2022 | 02/28/2022 | $1.00 | — | — | $0.00000769 | $0.00000769 |
| 01/31/2022 | 01/31/2022 | 01/31/2022 | 01/31/2022 | $1.00 | — | — | $0.00000851 | $0.00000851 |
| 12/31/2021 | 12/31/2021 | 12/31/2021 | 12/31/2021 | $1.00 | — | — | $0.00001028 | $0.00001028 |
| 11/30/2021 | 11/30/2021 | 11/30/2021 | 11/30/2021 | $1.00 | — | — | $0.00000822 | $0.00000822 |
| 10/29/2021 | 10/29/2021 | 10/29/2021 | 10/29/2021 | $1.00 | — | — | $0.0000085 | $0.0000085 |
| 09/30/2021 | 09/30/2021 | 09/30/2021 | 09/30/2021 | $1.00 | — | — | $0.00000824 | $0.00000824 |
| 08/31/2021 | 08/31/2021 | 08/31/2021 | 08/31/2021 | $1.00 | — | — | $0.0000085 | $0.0000085 |
| 07/30/2021 | 07/30/2021 | 07/30/2021 | 07/30/2021 | $1.00 | — | — | $0.00000849 | $0.00000849 |
| 06/30/2021 | 06/30/2021 | 06/30/2021 | 06/30/2021 | $1.00 | — | — | $0.00005343 | $0.00005343 |
| 05/28/2021 | 05/28/2021 | 05/28/2021 | 05/28/2021 | $1.00 | — | — | $0.00000849 | $0.00000849 |
| 04/30/2021 | 04/30/2021 | 04/30/2021 | 04/30/2021 | $1.00 | — | — | $0.00000822 | $0.00000822 |
| 03/31/2021 | 03/31/2021 | 03/31/2021 | 03/31/2021 | $1.00 | — | — | $0.0000085 | $0.0000085 |
| 02/26/2021 | 02/26/2021 | 02/26/2021 | 02/26/2021 | $1.00 | — | — | $0.00000767 | $0.00000767 |
| 01/29/2021 | 01/29/2021 | 01/29/2021 | 01/29/2021 | $1.00 | — | — | $0.00000849 | $0.00000849 |
| 12/31/2020 | 12/31/2020 | 12/31/2020 | 12/31/2020 | $1.00 | — | — | $0.00000849 | $0.00000849 |
| 11/30/2020 | 11/30/2020 | 11/30/2020 | 11/30/2020 | $1.00 | — | — | $0.00000822 | $0.00000822 |
| 10/30/2020 | 10/30/2020 | 10/30/2020 | 10/30/2020 | $1.00 | — | — | $0.00000849 | $0.00000849 |
| 09/30/2020 | 09/30/2020 | 09/30/2020 | 09/30/2020 | $1.00 | — | — | $0.00000822 | $0.00000822 |
| 08/31/2020 | 08/31/2020 | 08/31/2020 | 08/31/2020 | $1.00 | — | — | $0.00000849 | $0.00000849 |
| 07/31/2020 | 07/31/2020 | 07/31/2020 | 07/31/2020 | $1.00 | — | — | $0.00000849 | $0.00000849 |
| 06/30/2020 | 06/30/2020 | 06/30/2020 | 06/30/2020 | $1.00 | — | — | $0.00000822 | $0.00000822 |
| 05/29/2020 | 05/29/2020 | 05/29/2020 | 05/29/2020 | $1.00 | — | — | $0.0000148 | $0.0000148 |
| 04/30/2020 | 04/30/2020 | 04/30/2020 | 04/30/2020 | $1.00 | — | — | $0.00005737 | $0.00005737 |
| 03/31/2020 | 03/31/2020 | 03/31/2020 | 03/31/2020 | $1.00 | — | — | $0.00056592 | $0.00056592 |
| 02/28/2020 | 02/28/2020 | 02/28/2020 | 02/28/2020 | $1.00 | — | — | $0.00113001 | $0.00113001 |
| 01/31/2020 | 01/31/2020 | 01/31/2020 | 01/31/2020 | $1.00 | — | — | $0.00119017 | $0.00119017 |
| 12/31/2019 | 12/31/2019 | 12/31/2019 | 12/31/2019 | $1.00 | — | — | $0.00120252 | $0.00120252 |
| 11/29/2019 | 11/29/2019 | 11/29/2019 | 11/29/2019 | $1.00 | — | — | $0.00122369 | $0.00122369 |
| 10/31/2019 | 10/31/2019 | 10/31/2019 | 10/31/2019 | $1.00 | — | — | $0.00144377 | $0.00144377 |
| 09/30/2019 | 09/30/2019 | 09/30/2019 | 09/30/2019 | $1.00 | — | — | $0.00160636 | $0.00160636 |
| 08/30/2019 | 08/30/2019 | 08/30/2019 | 08/30/2019 | $1.00 | — | — | $0.00168752 | $0.00168752 |
| 07/31/2019 | 07/31/2019 | 07/31/2019 | 07/31/2019 | $1.00 | — | — | $0.001881 | $0.001881 |
| 06/28/2019 | 06/28/2019 | 06/28/2019 | 06/28/2019 | $1.00 | — | — | $0.00180992 | $0.00180992 |
| 05/31/2019 | 05/31/2019 | 05/31/2019 | 05/31/2019 | $1.00 | — | — | $0.00191011 | $0.00191011 |
| 04/30/2019 | 04/30/2019 | 04/30/2019 | 04/30/2019 | $1.00 | — | — | $0.00187207 | $0.00187207 |
| 03/29/2019 | 03/29/2019 | 03/29/2019 | 03/29/2019 | $1.00 | — | — | $0.00192122 | $0.00192122 |
| 02/28/2019 | 02/28/2019 | 02/28/2019 | 02/28/2019 | $1.00 | — | — | $0.00172168 | $0.00172168 |
| 01/31/2019 | 01/31/2019 | 01/31/2019 | 01/31/2019 | $1.00 | — | — | $0.00191568 | $0.00191568 |
| 12/31/2018 | 12/31/2018 | 12/31/2018 | 12/31/2018 | $1.00 | — | — | $0.00183032 | $0.00183032 |
| 11/30/2018 | 11/30/2018 | 11/30/2018 | 11/30/2018 | $1.00 | — | — | $0.00169965 | $0.00169965 |
| 10/31/2018 | 10/31/2018 | 10/31/2018 | 10/31/2018 | $1.00 | — | — | $0.00168415 | $0.00168415 |
| 09/28/2018 | 09/28/2018 | 09/28/2018 | 09/28/2018 | $1.00 | — | — | $0.00136731 | $0.00136731 |
| 08/31/2018 | 08/31/2018 | 08/31/2018 | 08/31/2018 | $1.00 | — | — | $0.00165966 | $0.00165966 |
| 07/31/2018 | 07/31/2018 | 07/31/2018 | 07/31/2018 | $1.00 | — | — | $0.00144658 | $0.00144658 |
| 06/29/2018 | 06/29/2018 | 06/29/2018 | 06/29/2018 | $1.00 | — | — | $0.00140166 | $0.00140166 |
| 05/31/2018 | 05/31/2018 | 05/31/2018 | 05/31/2018 | $1.00 | — | — | $0.00130536 | $0.00130536 |
| 04/30/2018 | 04/30/2018 | 04/30/2018 | 04/30/2018 | $1.00 | — | — | $0.00116932 | $0.00116932 |
| 03/29/2018 | 03/29/2018 | 03/29/2018 | 03/29/2018 | $1.00 | — | — | $0.00117334 | $0.00117334 |
| 02/28/2018 | 02/28/2018 | 02/28/2018 | 02/28/2018 | $1.00 | — | — | $0.00092353 | $0.00092353 |
| 01/31/2018 | 01/31/2018 | 01/31/2018 | 01/31/2018 | $1.00 | — | — | $0.00093235 | $0.00093235 |
| 12/29/2017 | 12/29/2017 | 12/29/2017 | 12/29/2017 | $1.00 | — | — | $0.00091883 | $0.00091883 |
| 11/30/2017 | 11/30/2017 | 11/30/2017 | 11/30/2017 | $1.00 | — | — | $0.00078436 | $0.00078436 |
| 10/31/2017 | 10/31/2017 | 10/31/2017 | 10/31/2017 | $1.00 | — | — | $0.00075611 | $0.00075611 |
| 09/29/2017 | 09/29/2017 | 09/29/2017 | 09/29/2017 | $1.00 | — | — | $0.0007523 | $0.0007523 |
| 08/31/2017 | 08/31/2017 | 08/31/2017 | 08/31/2017 | $1.00 | — | — | $0.00074139 | $0.00074139 |
| 07/31/2017 | 07/31/2017 | 07/31/2017 | 07/31/2017 | $1.00 | — | — | $0.00064903 | $0.00064903 |
| 06/30/2017 | 06/30/2017 | 06/30/2017 | 06/30/2017 | $1.00 | — | — | $0.00062683 | $0.00062683 |
| 05/31/2017 | 05/31/2017 | 05/31/2017 | 05/31/2017 | $1.00 | — | — | $0.00052616 | $0.00052616 |
| 04/28/2017 | 04/28/2017 | 04/28/2017 | 04/28/2017 | $1.00 | — | — | $0.00044572 | $0.00044572 |
| 03/31/2017 | 03/31/2017 | 03/31/2017 | 03/31/2017 | $1.00 | — | — | $0.0004376 | $0.0004376 |
| 02/28/2017 | 02/28/2017 | 02/28/2017 | 02/28/2017 | $1.00 | — | — | $0.00030229 | $0.00030229 |
| 01/31/2017 | 01/31/2017 | 01/31/2017 | 01/31/2017 | $1.00 | — | — | $0.0003111 | $0.0003111 |
| 12/30/2016 | 12/30/2016 | 12/30/2016 | 12/30/2016 | $1.00 | — | — | $0.00031502 | $0.00031502 |
| 11/30/2016 | 11/30/2016 | 11/30/2016 | 11/30/2016 | $1.00 | — | — | $0.00023243 | $0.00023243 |
| 10/31/2016 | 10/31/2016 | 10/31/2016 | 10/31/2016 | $1.00 | — | — | $0.00023254 | $0.00023254 |
| 09/30/2016 | 09/30/2016 | 09/30/2016 | 09/30/2016 | $1.00 | — | — | $0.000258 | $0.000258 |
| 08/31/2016 | 08/31/2016 | 08/31/2016 | 08/31/2016 | $1.00 | — | — | $0.00024465 | $0.00024465 |
| 07/29/2016 | 07/29/2016 | 07/29/2016 | 07/29/2016 | $1.00 | — | — | $0.0002501 | $0.0002501 |
| 06/30/2016 | 06/30/2016 | 06/30/2016 | 06/30/2016 | $1.00 | — | — | $0.00025157 | $0.00025157 |
| 05/31/2016 | 05/31/2016 | 05/31/2016 | 05/31/2016 | $1.00 | — | — | $0.00023127 | $0.00023127 |
| 04/29/2016 | 04/29/2016 | 04/29/2016 | 04/29/2016 | $1.00 | — | — | $0.00022595 | $0.00022595 |
| 03/31/2016 | 03/31/2016 | 03/31/2016 | 03/31/2016 | $1.00 | — | — | $0.00021799 | $0.00021799 |
| 02/29/2016 | 02/29/2016 | 02/29/2016 | 02/29/2016 | $1.00 | — | — | $0.00019848 | $0.00019848 |
| 01/29/2016 | 01/29/2016 | 01/29/2016 | 01/29/2016 | $1.00 | — | — | $0.00015856 | $0.00015856 |
| 12/31/2015 | 12/31/2015 | 12/31/2015 | 12/31/2015 | $1.00 | — | — | $0.00005372 | $0.00005372 |
| 11/30/2015 | 11/30/2015 | 11/30/2015 | 11/30/2015 | $1.00 | — | — | $0.00002384 | $0.00002384 |
| 10/30/2015 | 10/30/2015 | 10/30/2015 | 10/30/2015 | $1.00 | — | — | $0.0000263 | $0.0000263 |
| 09/30/2015 | 09/30/2015 | 09/30/2015 | 09/30/2015 | $1.00 | — | — | $0.00002466 | $0.00002466 |
| 08/31/2015 | 08/31/2015 | 08/31/2015 | 08/31/2015 | $1.00 | — | — | $0.00002384 | $0.00002384 |
| 07/31/2015 | 07/31/2015 | 07/31/2015 | 07/31/2015 | $1.00 | — | — | $0.00002713 | $0.00002713 |
| 06/30/2015 | 06/30/2015 | 06/30/2015 | 06/30/2015 | $1.00 | — | — | $0.00002466 | $0.00002466 |
| 05/29/2015 | 05/29/2015 | 05/29/2015 | 05/29/2015 | $1.00 | — | — | $0.00002548 | $0.00002548 |
| 04/30/2015 | 04/30/2015 | 04/30/2015 | 04/30/2015 | $1.00 | — | — | $0.00002466 | $0.00002466 |
| 03/31/2015 | 03/31/2015 | 03/31/2015 | 03/31/2015 | $1.00 | — | — | $0.00002466 | $0.00002466 |
| 02/27/2015 | 02/27/2015 | 02/27/2015 | 02/27/2015 | $1.00 | — | — | $0.00002302 | $0.00002302 |
| 01/30/2015 | 01/30/2015 | 01/30/2015 | 01/30/2015 | $1.00 | — | — | $0.00002548 | $0.00002548 |
| 12/31/2014 | 12/31/2014 | 12/31/2014 | 12/31/2014 | $1.00 | — | — | $0.0000263 | $0.0000263 |
| 11/28/2014 | 11/28/2014 | 11/28/2014 | 11/28/2014 | $1.00 | — | — | $0.00002302 | $0.00002302 |
| 10/31/2014 | 10/31/2014 | 10/31/2014 | 10/31/2014 | $1.00 | — | — | $0.00002713 | $0.00002713 |
| 09/30/2014 | 09/30/2014 | 09/30/2014 | 09/30/2014 | $1.00 | — | — | $0.00002385 | $0.00002385 |
| 08/29/2014 | 08/29/2014 | 08/29/2014 | 08/29/2014 | $1.00 | — | — | $0.00002631 | $0.00002631 |
| 07/31/2014 | 07/31/2014 | 07/31/2014 | 07/31/2014 | $1.00 | — | — | $0.0000255 | $0.0000255 |
| 06/30/2014 | 06/30/2014 | 06/30/2014 | 06/30/2014 | $1.00 | — | — | $0.00002386 | $0.00002386 |
| 05/30/2014 | 05/30/2014 | 05/30/2014 | 05/30/2014 | $1.00 | — | — | $0.00002632 | $0.00002632 |
| 04/30/2014 | 04/30/2014 | 04/30/2014 | 04/30/2014 | $1.00 | — | — | $0.00002468 | $0.00002468 |
| 03/31/2014 | 03/31/2014 | 03/31/2014 | 03/31/2014 | $1.00 | — | — | $0.00002386 | $0.00002386 |
| 02/28/2014 | 02/28/2014 | 02/28/2014 | 02/28/2014 | $1.00 | — | — | $0.00002304 | $0.00002304 |
| 01/31/2014 | 01/31/2014 | 01/31/2014 | 01/31/2014 | $1.00 | — | — | $0.00002632 | $0.00002632 |
| 12/31/2013 | 12/31/2013 | 12/31/2013 | 12/31/2013 | $1.00 | — | — | $0.0000255 | $0.0000255 |
| 11/29/2013 | 11/29/2013 | 11/29/2013 | 11/29/2013 | $1.00 | — | — | $0.0000255 | $0.0000255 |
| 10/31/2013 | 10/31/2013 | 10/31/2013 | 10/31/2013 | $1.00 | — | — | $0.00002551 | $0.00002551 |
| 09/30/2013 | 09/30/2013 | 09/30/2013 | 09/30/2013 | $1.00 | — | — | $0.00002304 | $0.00002304 |
Tax Information
Tax Information
Federal ID Number 46-3057334
Distributions per Share ($)
- 2024
- 2023
- 2022
- 2021
- 2020
- 2019
- 2018
- 2017
- 2016
- 2015
- 2014
- 2013
| Record Date | Ordinary Dividends | Qualified Dividends | Capital Gain Distributions | Unrecaptured Section 1250 Gain | Non-Taxable Return Of Capital | Section 199a Dividends | Foreign Tax Paid | Exempt Interest Dividends | Interest on Tax Reclaim Refunds |
|---|---|---|---|---|---|---|---|---|---|
| Jan 31 | 0.004416 | — | — | — | — | — | — | — | — |
| Feb 29 | 0.004121 | — | — | — | — | — | — | — | — |
| Mar 28 | 0.004397 | — | — | — | — | — | — | — | — |
| Apr 30 | 0.004244 | — | — | — | — | — | — | — | — |
| May 31 | 0.004394 | — | — | — | — | — | — | — | — |
| Jun 28 | 0.004253 | — | — | — | — | — | — | — | — |
| Jul 31 | 0.004401 | — | — | — | — | — | — | — | — |
| Aug 30 | 0.004375 | — | — | — | — | — | — | — | — |
| Sep 30 | 0.004106 | — | — | — | — | — | — | — | — |
| Oct 31 | 0.004033 | — | — | — | — | — | — | — | — |
| Nov 29 | 0.003781 | — | — | — | — | — | — | — | — |
| Dec 31 | 0.003749 | — | — | — | — | — | — | — | — |
| 0.050272 | — | — | — | — | — | — | — | — |
The fund's policy is to declare daily, and pay monthly, dividends from net investment income. Each day on which the fund declares a dividend distribution is ex date.
The per share distribution amounts presented above reflect the distribution rates that were paid to shareholders on the indicated dates. The character of distributions for certain funds may have been subsequently adjusted for tax purposes. Shareholders can determine which funds may have reclassified the tax character of distributions by visiting the Tax Center in Tools & Resources. Information on reclassifications for distributions paid during the current calendar year will not be available until the first quarter of the following year.
Supplemental Tax Information
Franklin Templeton and its specialized investment managers and its employees are not in the business of providing tax or legal advice to taxpayers. These materials and any tax-related statements are not intended or written to be used, and cannot be used or relied upon, by any such taxpayer for the purpose of avoiding tax penalties or complying with any applicable tax laws or regulations. Tax-related statements, if any, may have been written in connection with the promotion or marketing of the transaction(s) or matter(s) addressed by these materials, to the extent allowed by applicable law. Each investor’s tax situation is different, and is based on an individual’s tax bracket, type of account used for investment and other factors. Any such taxpayer should seek advice based on the taxpayer's particular circumstances from an independent tax advisor.
Pricing
- Pricing
- Liquid Assets
- 6 Month Historical Shadow NAV
Pricing
Pricing History Chart
- 1 Month
- 3 Months
- 6 Months
- YTD
- 1 Year
- 3 Years
- 5 Years
- Since Inception
November 2025
| SuSunday | MoMonday | TuTuesday | WeWednesday | ThThursday | FrFriday | SaSaturday |
|---|---|---|---|---|---|---|
November 2025
| SuSunday | MoMonday | TuTuesday | WeWednesday | ThThursday | FrFriday | SaSaturday |
|---|---|---|---|---|---|---|
Chart
Daily Fund Prices
52-Week Range
Historical Data - Daily Fund Prices
- 1 Month
- 3 Months
- 6 Months
- YTD
- 1 Year
- 3 Years
- 5 Years
- Since Inception
November 2025
| SuSunday | MoMonday | TuTuesday | WeWednesday | ThThursday | FrFriday | SaSaturday |
|---|---|---|---|---|---|---|
November 2025
| SuSunday | MoMonday | TuTuesday | WeWednesday | ThThursday | FrFriday | SaSaturday |
|---|---|---|---|---|---|---|
Historical Pricing Results From 09/30/2025 To 10/31/2025
| Date | NAV | NAV Change | NAV Change (%) | Master Fund Level Market NAV(USD) | Liquid Assets Daily (%) | Liquid Assets Weekly (%) | Shareholder Net Flow | Master Fund Level Shareholder Net Flow |
|---|---|---|---|---|---|---|---|---|
| 10/31/2025 | $1.0000 | $0.0000 | 0.00% | — | — | — | — | — |
| 10/30/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.75% | 99.75% | $16,628,832.1600 | $46,505,162.8000 |
| 10/29/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.73% | 99.73% | $385,564.6600 | $15,430.7500 |
| 10/28/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.73% | 99.73% | $-47,356,829.6600 | $-65,502,310.5700 |
| 10/27/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.76% | 99.76% | $18,075,027.2800 | $17,559,955.0500 |
| 10/24/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.74% | 99.74% | $6,270,794.5100 | $2,278,318.6500 |
| 10/23/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.76% | 99.76% | $13,821,140.4700 | $6,273,985.0500 |
| 10/22/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.77% | 99.77% | $5,098,113.1700 | $-313,779.0800 |
| 10/21/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.78% | 99.78% | $2,078,138.5400 | $-2,632,355.4500 |
| 10/20/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.78% | 99.78% | $364,854.7900 | $25,509,941.0900 |
| 10/17/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.77% | 99.77% | $-1,184,057.5800 | $6,866,480.3300 |
| 10/16/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.78% | 99.78% | $4,868,154.2100 | $-23,185,008.3400 |
| 10/15/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.80% | 99.80% | $-101,838,066.9700 | $-73,795,524.1900 |
| 10/14/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.82% | 99.82% | $35,730,059.9100 | $12,367,168.6000 |
| 10/10/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.80% | 99.80% | $69,669,140.1200 | $78,533,012.5800 |
| 10/09/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.81% | 99.81% | $249,497.8600 | $-12,668,534.8800 |
| 10/08/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.81% | 99.81% | $-7,717,760.6100 | $5,679,890.9300 |
| 10/07/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.81% | 99.81% | $943,745.3000 | $-4,864,511.6700 |
| 10/06/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.79% | 99.79% | $-844,591.5700 | $4,690,211.4700 |
| 10/03/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.78% | 99.78% | $-6,018,723.5000 | $-10,231,398.0400 |
| 10/02/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.80% | 99.80% | $7,172,723.0700 | $7,655,392.1500 |
| 10/01/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.81% | 99.81% | $1,597,127.2700 | $12,946,081.6000 |
| 09/30/2025 | $1.0000 | $0.0000 | 0.00% | — | 99.81% | 99.81% | $3,696,281.5500 | $18,934,651.9600 |
Liquid Assets
Chart
6 Month Historical Shadow NAV
6 Month Historical Shadow NAV 11
Chart
Documents
Fund Literature
Factsheet - Western Asset Institutional U.S. Treasury Obligations Money Market Fund - Class Administrative
Factsheet - Western Asset Institutional U.S. Treasury Obligations Money Market Fund - Class Institutional
Factsheet - Western Asset Institutional U.S. Treasury Obligations Money Market Fund - Class Inverstors
Mailed hardcopies unavailable.
Regulatory Documents
Prospectus - Western Asset Institutional Government Reserves Institutional Shares
Summary Prospectus - Western Asset Institutional U.S. Treasury Obligations Money Market Fund Institutional Shares
Annual Report - Western Asset Institutional U.S. Treasury Obligations Money Market Fund - Institutional Shares
Annual Financial Statements and Other Information - Western Asset Institutional U.S. Treasury Obligations Money Market Fund
Semi-Annual Report - Western Asset Institutional U.S. Treasury Obligations Money Market Fund - Institutional Shares
Semi-Annual Financial Statements and Other Information - Western Asset Institutional U.S. Treasury Obligations Money Market Fund
Statement of Additional Information - Legg Mason Partners Money Market Trust Book 13
Mailed hardcopies unavailable.
Western Asset Institutional Money Market Application (Institutional Shares)
Mailed hardcopies unavailable.
Western Asset Institutional Money Market Application (Investor Shares)
Mailed hardcopies unavailable.
Risks
What Are The Risks?
You could lose money by investing in the fund. Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The fund’s sponsor has no legal obligation to provide financial support to the fund, and you should not expect that the sponsor will provide financial support to the fund at any time.
All investments involve risk, including loss of principal. The fund's yield may be affected by changes in interest rates and changes in credit ratings. These and other risks are discussed in the fund’s prospectus.
Important Information
Most funds offer multiple share classes. Share classes are subject to different fees and expenses, which will affect their performance.
Certain share classes are only offered to eligible investors as stated in the prospectus. Different minimums may apply to clients of certain service agents. All classes of shares are not available through all distribution channels. See the Fund's prospectus for additional information.
You need Adobe Acrobat Reader to view and print PDF documents. Download a free version from Adobe's website.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Performance data quoted represents past performance, which does not guarantee future results.
CFA® and Chartered Financial Analyst® are trademarks owned by CFA Institute.
Indexes are unmanaged and one cannot invest directly in an index. They do not reflect any fees, expenses or sales charges.
FTSE 1 Month U.S. Treasury Bill Index tracks the performance of one-month U.S. Treasury bills.
Source: FTSE.
Investors should carefully consider a fund's investment goals, risks, sales charges and expenses before investing. The prospectus contains this and other information. Please read the prospectus carefully before investing or sending money.
Franklin Distributors, LLC. Member FINRA, SIPC. All entities mentioned are Franklin Templeton affiliated companies. Investment Products: NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE.
Fund filings of the Monthly Schedule of Portfolio Holdings of Money Market Funds are available at Form N-MFP. Reports and other information about the funds are available on the EDGAR Database on the SEC's Internet site at www.sec.gov.
Footnotes
Net Asset Value - the amount per share you would receive if you sold shares that day. NAV Change indicates a change in the Net Asset Value from the previous business day.
Rule 2a-7 of the Investment Company Act of 1940 provides that money market funds may not acquire any security other than a “weekly liquid asset” unless, immediately following such purchase, at least 50% of its total assets would be invested in weekly liquid assets. In addition, the Rule provides that taxable money market funds may not acquire any security other than a “daily liquid asset” unless, immediately following such purchase, at least 25% of its total assets would be invested in daily liquid assets.
Daily Liquid Assets include (i) cash; (ii) direct obligations of the U.S. Government; and (iii) securities that will mature or are subject to a demand feature that is exercisable and payable within one business Day. May include the effect of receivables from pending sales and payables from pending purchases.
Weekly Liquid Assets include (i) cash; (ii) direct obligations of the U.S. Government; (iii) U.S. Government securities issued by a person controlled or supervised by and acting as an instrumentality of the U.S. Government pursuant to authority granted by the U.S. Congress, that are issued at a discount to the principal amount to be repaid at maturity and have a remaining maturity of 60 days or less; and (iv) securities that will mature or are subject to a demand feature that is exercisable and payable within five business Days. May include the effect of receivables from pending sales and payables from pending purchases.
Daily Liquid Assets and Weekly Liquid Assets are calculated at the master portfolio level.
Ratings are issued and reported at the Portfolio level. A fund rated ‘AAAm’ demonstrates extremely strong capacity to maintain principal stability and to limit exposure to principal losses due to credit risk. ‘AAAm’ is the highest principal stability fund rating assigned by S&P Global Ratings. S&P’s ratings represent an opinion only, are not recommendations to buy, sell or hold securities of a Fund, and may be revised or withdrawn at any time. The Fitch AAAmmf, money market fund rating reflects the Portfolio’s extremely strong capacities to achieve the investment objectives of preserving principal and providing shareholder liquidity through limiting credit, market and liquidity risk. The Moody’s Aaa-mf rating of the Portfolio reflects the strong underlying credit and liquidity profiles of the Portfolio and the conservative investment strategies employed in the pursuit to generate income while preserving capital and maintaining liquidity for the shareholders. For more information regarding rating methodologies for Standard & Poors visit: https://www.spratings.com/en_US/understandingratings, for Fitch visit: https://www.fitchratings.com/site/home and for Moody’s visit: www.moodys.com.
Based on the previous business day.
With Waiver means the performance quote reflects any applicable expense reductions and fee waivers.
The 7-day Current Yield represents net interest income generated by the investments for the past 7 days and assumes that the same income is generated each week over a 365-day period. The 7-day yield more closely reflects current fund earnings than does total returns. 7-day Effective Yield, assumes reinvest of the coupon (interest payments). Unlike Current Yield, Effective Yield takes into account the power of compounding on investment returns. Yields for other share classes may vary due to differences in sales charge structure and class expenses.
Gross Expense Ratio reflects the total annual operating expenses for the share class shown, prior to the deduction of any waiver or reimbursement. Actual expenses may be higher and may impact portfolio returns. Net Expense Ratio reflects total expenses after any fee waivers, implemented expense caps or reimbursements. If a fund has contractual fee waivers, expense caps and/or reimbursements, the expiration date can be found by clicking on the information button next to the net expense ratio. Additional amounts may be voluntarily waived and/or reimbursed and may be modified or discontinued at any time without notice. Expense ratios are as of the most recent prospectus or annual report.
Net Expense Ratio represents the expense ratio applicable to investors.
Assets are reported at the fund level.
Shadow NAV is the market-based net asset value per share of a fund calculated based on current market factors, before applying the amortized cost method. The Funds do not use a market-based NAV for purchase and sale transactions in Fund shares.
