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LUIXX

Western Asset Institutional U.S. Treasury Obligations Money Market Fund

As of 10/31/2025

NAV 1

$1.0000

$0.0000 (0.00%)
As of 10/30/2025

Fund Level Market NAV

$1.0000

 
As of 10/30/2025

Liquid Asset (Daily) 23

99.75%

 
As of 10/30/2025

Liquid Asset (Weekly) 23

99.75%

 

Overview

Western Asset logo

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
Asset Class 
Money Funds
Fund Inception Date 
09/03/2013
Share Class Inception Date 
09/03/2013
Investment Style 
Money Market
Morningstar Category 
Money Market-Taxable
Lipper Classification 
Instl U.S. Treasury Money Market Funds
S&P Rating4  As of 09/30/2025
AAAm
Fitch Rating4  As of 09/30/2025
AAAmmf
Moody’s Rating4  As of 09/30/2025
Aaa-mf
Shareholder Net Flow5  As of 10/30/2025
$16.63 Million
Dividends & Yields
Dividend Frequency, if any 
Daily
7-Day Current Yield67  As of 11/01/2025 (Updated Daily)
3.95%
7-Day Current Yield—Without Waiver7  As of 11/01/2025 (Updated Daily)
3.80%
7-Day Effective Yield67  As of 11/01/2025 (Updated Daily)
4.03%
7-Day Effective Yield—Without Waiver7  As of 11/01/2025 (Updated Daily)
3.87%
Sales Charges, Expenses & Fees
As of 01/01/2025
Gross Expense Ratio8 
0.34%
Net Expense Ratio89 
0.18%
Maximum Initial Charge 
N/A
CDSC 
N/A
Identifiers
Ticker 
LUIXX
Fund Number 
5094
CUSIP Code 
52470G551

Performance

Portfolio

Portfolio Holdings

Holdings

As of 09/30/2025 Updated Monthly
Security Name 
FIXED INCOME CLEARING CORP / STATE STREET
Weight (%) 
8.48
Market Value ($) 
50,000,000
Quantity 
50,000,000
Security Name 
SOCIETE GENERALE, NEW YORK BRANCH
Weight (%) 
8.48
Market Value ($) 
50,000,000
Quantity 
50,000,000
Security Name 
CREDIT AGRICOLE CORPORATE & INVESTMENT BANK
Weight (%) 
8.48
Market Value ($) 
50,000,000
Quantity 
50,000,000
Security Name 
MIZUHO SECURITIES USA LLC
Weight (%) 
4.24
Market Value ($) 
25,000,000
Quantity 
25,000,000
Security Name 
UNITED STATES TREASURY FLOATING RATE NOTE
Weight (%) 
4.24
Market Value ($) 
24,995,114
Quantity 
25,000,000
Security Name 
FIXED INCOME CLEARING CORP / STATE STREET
Weight (%) 
4.24
Market Value ($) 
25,000,000
Quantity 
25,000,000
Security Name 
UNITED STATES TREASURY BILL
Weight (%) 
3.72
Market Value ($) 
21,916,591
Quantity 
22,000,000
Security Name 
UNITED STATES TREASURY FLOATING RATE NOTE
Weight (%) 
3.39
Market Value ($) 
20,000,013
Quantity 
20,000,000
Security Name 
UNITED STATES TREASURY FLOATING RATE NOTE
Weight (%) 
3.39
Market Value ($) 
19,999,646
Quantity 
20,000,000
Security Name 
CANADIAN IMPERIAL BANK OF COMMERCE NY
Weight (%) 
3.39
Market Value ($) 
20,000,000
Quantity 
20,000,000

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

Distribution Schedules

Dividend Frequency, if any  This fund is an ex-Dividend fund
Daily
Capital Gain Distributions 
December

Rates and Yields

Read important information about results and other investment disclosures
7-Day Current Yield
As of 10/31/2025
w/ Waiver 
3.96%
w/o Waiver 
3.81%
7-Day Effective Yield
As of 10/31/2025
w/ Waiver 
4.04%
w/o Waiver 
3.88%

Distributions Per Share

Current Year Distributions Per Share
Distribution amounts may be estimates
Record Date  
12/15/2025
Ex-Dividend Date  
12/16/2025
Reinvestment Date  
12/16/2025
Payable Date  
12/16/2025
Reinvestment Price  
Long-Term Capital Gains  
$0.0000-$0.0000 Estimates
Short-Term Capital Gains  
$0.0000-$0.0000 Estimates
Income  
Total Distribution Per Share  
Estimates
Record Date  
10/31/2025
Ex-Dividend Date  
10/31/2025
Reinvestment Date  
10/31/2025
Payable Date  
10/31/2025
Reinvestment Price  
$1.00
Long-Term Capital Gains  
Short-Term Capital Gains  
Income  
$0.0033644
Total Distribution Per Share  
$0.0033644
Record Date  
09/30/2025
Ex-Dividend Date  
09/30/2025
Reinvestment Date  
09/30/2025
Payable Date  
09/30/2025
Reinvestment Price  
$1.00
Long-Term Capital Gains  
Short-Term Capital Gains  
Income  
$0.00334875
Total Distribution Per Share  
$0.00334875
Record Date  
08/29/2025
Ex-Dividend Date  
08/29/2025
Reinvestment Date  
08/29/2025
Payable Date  
08/29/2025
Reinvestment Price  
$1.00
Long-Term Capital Gains  
Short-Term Capital Gains  
Income  
$0.00354005
Total Distribution Per Share  
$0.00354005
Record Date  
07/31/2025
Ex-Dividend Date  
07/31/2025
Reinvestment Date  
07/31/2025
Payable Date  
07/31/2025
Reinvestment Price  
$1.00
Long-Term Capital Gains  
Short-Term Capital Gains  
Income  
$0.00354897
Total Distribution Per Share  
$0.00354897
Record Date  
06/30/2025
Ex-Dividend Date  
06/30/2025
Reinvestment Date  
06/30/2025
Payable Date  
06/30/2025
Reinvestment Price  
$1.00
Long-Term Capital Gains  
Short-Term Capital Gains  
Income  
$0.00342905
Total Distribution Per Share  
$0.00342905
Record Date  
05/30/2025
Ex-Dividend Date  
05/30/2025
Reinvestment Date  
05/30/2025
Payable Date  
05/30/2025
Reinvestment Price  
$1.00
Long-Term Capital Gains  
Short-Term Capital Gains  
Income  
$0.00355501
Total Distribution Per Share  
$0.00355501
Record Date  
04/30/2025
Ex-Dividend Date  
04/30/2025
Reinvestment Date  
04/30/2025
Payable Date  
04/30/2025
Reinvestment Price  
$1.00
Long-Term Capital Gains  
Short-Term Capital Gains  
Income  
$0.00345254
Total Distribution Per Share  
$0.00345254
Record Date  
03/31/2025
Ex-Dividend Date  
03/31/2025
Reinvestment Date  
03/31/2025
Payable Date  
03/31/2025
Reinvestment Price  
$1.00
Long-Term Capital Gains  
Short-Term Capital Gains  
Income  
$0.00357219
Total Distribution Per Share  
$0.00357219
Record Date  
02/28/2025
Ex-Dividend Date  
02/28/2025
Reinvestment Date  
02/28/2025
Payable Date  
02/28/2025
Reinvestment Price  
$1.00
Long-Term Capital Gains  
Short-Term Capital Gains  
Income  
$0.00324943
Total Distribution Per Share  
$0.00324943
Record Date  
01/31/2025
Ex-Dividend Date  
01/31/2025
Reinvestment Date  
01/31/2025
Payable Date  
01/31/2025
Reinvestment Price  
$1.00
Long-Term Capital Gains  
Short-Term Capital Gains  
Income  
$0.00361664
Total Distribution Per Share  
$0.00361664

Tax Information

Tax Information

Federal ID Number 46-3057334
For information on tax years prior to 2008, please contact us
These amounts represent distributions paid by the fund, foreign taxes passed through (if any), and other distribution characteristics for the calendar year selected. These amounts are reported to shareholders on Form 1099-DIV.
Distributions per Share ($)
Record Date  
Jan 31
Ordinary Dividends  
0.004416
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  
Record Date  
Feb 29
Ordinary Dividends  
0.004121
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  
Record Date  
Mar 28
Ordinary Dividends  
0.004397
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  
Record Date  
Apr 30
Ordinary Dividends  
0.004244
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  
Record Date  
May 31
Ordinary Dividends  
0.004394
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  
Record Date  
Jun 28
Ordinary Dividends  
0.004253
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  
Record Date  
Jul 31
Ordinary Dividends  
0.004401
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  
Record Date  
Aug 30
Ordinary Dividends  
0.004375
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  
Record Date  
Sep 30
Ordinary Dividends  
0.004106
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  
Record Date  
Oct 31
Ordinary Dividends  
0.004033
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  
Record Date  
Nov 29
Ordinary Dividends  
0.003781
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  
Record Date  
Dec 31
Ordinary Dividends  
0.003749
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  
Record Date  
Ordinary Dividends  
0.050272
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  

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
Foreign Source Income 
Foreign Source Qualified Dividends 
Direct U.S. Government Obligations 
51.15%
Specified Private Activity Bond Interest 
Dividends Received Deduction 
Section 163(j) 
99.89%
Indiana Resident Taxable Income 
Utah Resident Taxable Income 

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

Pricing History Chart

As of 10/31/2025 Updated Daily

Daily Fund Prices

As of 10/31/2025

Share Prices

As of 10/31/2025
NAV1 (Net Asset Value)
$1.0000
NAV Change1 
$0.0000
NAV Change (%)1 
0.00%
Fund Level Market NAV 
$1.0000
Master Fund Level Market NAV 
$1.0001
Liquid Asset (Daily)23 
99.75%
Liquid Asset (Weekly)23 
99.75%

52-Week Range

Highest NAV 
$1.0000
Lowest NAV 
$1.0000

Liquid Assets

6 Month Historical Daily and Weekly Liquid Assets 23
As of 10/30/2025

Chart

Line chart with 2 lines.
The chart has 1 X axis displaying Time. Data ranges from 2025-04-30 00:00:01 to 2025-10-30 00:00:01.
The chart has 1 Y axis displaying values. Data ranges from 99.73 to 99.95.
End of interactive chart.

6 Month Historical Shadow NAV

6 Month Historical Shadow NAV 11
As of 10/30/2025

Chart

Line chart with 127 data points.
The chart has 1 X axis displaying Time. Data ranges from 2025-04-30 00:00:01 to 2025-10-30 00:00:01.
The chart has 1 Y axis displaying values. Data ranges from 1 to 1.0002.
End of interactive chart.

Documents

Fund Literature

PDF Format

Factsheet - Western Asset Institutional U.S. Treasury Obligations Money Market Fund - Class Administrative

PDF Format

Factsheet - Western Asset Institutional U.S. Treasury Obligations Money Market Fund - Class Institutional

PDF Format

Factsheet - Western Asset Institutional U.S. Treasury Obligations Money Market Fund - Class Inverstors

Mailed hardcopies unavailable.

Regulatory Documents

PDF Format

Prospectus - Western Asset Institutional Government Reserves Institutional Shares

PDF Format

Summary Prospectus - Western Asset Institutional U.S. Treasury Obligations Money Market Fund Institutional Shares

PDF Format

Annual Report - Western Asset Institutional U.S. Treasury Obligations Money Market Fund - Institutional Shares

PDF Format

Annual Financial Statements and Other Information - Western Asset Institutional U.S. Treasury Obligations Money Market Fund

PDF Format

Semi-Annual Report - Western Asset Institutional U.S. Treasury Obligations Money Market Fund - Institutional Shares

PDF Format

Semi-Annual Financial Statements and Other Information - Western Asset Institutional U.S. Treasury Obligations Money Market Fund

PDF Format

Statement of Additional Information - Legg Mason Partners Money Market Trust Book 13

Mailed hardcopies unavailable.

PDF Format

Western Asset Institutional Money Market Application (Institutional Shares)

Mailed hardcopies unavailable.

PDF Format

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.