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N-CSRS 1 d103667dncsrs.htm U.S. TREASURY OBLIGATIONS PORTFOLIO U.S. Treasury Obligations Portfolio

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSR

CERTIFIED SHAREHOLDER REPORT OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number 811-10407

Master Portfolio Trust

(Exact name of registrant as specified in charter)

620 Eighth Avenue, 47^th Floor, New York, NY 10018

(Address of principal executive offices) (Zip code)

Marc A. De Oliveira

Franklin Templeton

100 First Stamford Place

Stamford, CT 06902

(Name and address of agent for service)

Registrant’s telephone number, including area code: 1-877-721-1926

Date of fiscal year end: August 31

Date of reporting period: February 28, 2021

ITEM 1. REPORT TO STOCKHOLDERS.

The Semi-Annual Report to Stockholders is filed herewith.

Schedule of investments (unaudited)

February 28, 2021

U.S. Treasury Obligations Portfolio


Security	Rate			Maturity Date		Face Amount		Value
Short-Term Investments — 99.4%
U.S. Treasury Bills — 46.5%
U.S. Treasury Bills		0.065	%		3/4/21	$	25,000,000	$	24,999,823	^(a)
U.S. Treasury Bills		0.077	%		3/9/21		25,000,000		24,999,528	^(a)
U.S. Treasury Bills		0.018	%		3/16/21		25,000,000		24,999,802	^(a)
U.S. Treasury Bills		0.104	%		4/6/21		25,000,000		24,997,375	^(a)
U.S. Treasury Bills		0.109	%		4/8/21		25,000,000		24,997,097	^(a)
U.S. Treasury Bills		0.104	%		4/13/21		15,000,000		14,998,119	^(a)
U.S. Treasury Bills		0.089	%		4/15/21		25,000,000		24,997,187	^(a)
U.S. Treasury Bills		0.093	%		5/6/21		40,000,000		39,993,171	^(a)
U.S. Treasury Bills		0.090	%		5/20/21		20,000,000		19,996,000	^(a)
U.S. Treasury Bills		0.096	%		7/22/21		25,000,000		24,990,566	^(a)
U.S. Treasury Bills		0.111	%		12/2/21		5,180,000		5,175,631	^(a)
Total U.S. Treasury Bills									255,144,299
U.S. Treasury Notes — 34.7%
U.S. Treasury Notes		2.250	%		3/31/21		15,000,000		15,027,310
U.S. Treasury Notes (3 mo. U.S. Treasury Money Market Yield + 0.139%)		0.179	%		4/30/21		20,000,000		20,000,128	^(b)
U.S. Treasury Notes		2.625	%		5/15/21		15,000,000		15,080,125
U.S. Treasury Notes		1.375	%		5/31/21		20,000,000		20,066,434
U.S. Treasury Notes		2.750	%		8/15/21		25,000,000		25,300,525
U.S. Treasury Notes (3 mo. U.S. Treasury Money Market Yield + 0.300%)		0.340	%		10/31/21		10,000,000		10,007,600	^(b)
U.S. Treasury Notes		1.750	%		11/30/21		10,000,000		10,124,711
U.S. Treasury Notes (3 mo. U.S. Treasury Money Market Yield + 0.154%)		0.194	%		1/31/22		25,000,000		25,027,516	^(b)
U.S. Treasury Notes (3 mo. U.S. Treasury Money Market Yield + 0.114%)		0.154	%		4/30/22		40,000,000		40,034,790	^(b)
U.S. Treasury Notes (3 mo. U.S. Treasury Money Market Yield + 0.049%)		0.089	%		1/31/23		10,000,000		10,000,777	^(b)
Total U.S. Treasury Notes									190,669,916
Repurchase Agreements — 18.2%
HSBC Bank USA tri-party repurchase agreement dated 2/26/21; Proceeds at maturity — $34,818,058; (Fully collateralized by various U.S. government obligations, 0.000% to 4.375% due 2/28/21 to 8/15/50; Market value — $35,514,419)		0.020	%		3/1/21		34,818,000		34,818,000

See Notes to Financial Statements.

U.S. Treasury Obligations Portfolio 2021 Semi-Annual Report

Schedule of investments (unaudited) (cont’d)

February 28, 2021

U.S. Treasury Obligations Portfolio

Security

Rate

Maturity
Date

Face

Amount

Value

Repurchase Agreements — continued

JP Morgan Securities LLC tri-party repurchase agreement dated 2/26/21; Proceeds at maturity — $25,000,021; (Fully collateralized by a U.S. Treasury Note, 0.125% due 12/15/23; Market value — $25,500,066)

0.010

3/1/21

$25,000,000

$ 25,000,000

Royal Bank of Canada tri-party repurchase agreement dated 2/26/21; Proceeds at maturity — $40,000,033; (Fully collateralized by various U.S. government obligations, 0.375% to 3.750% due 7/15/23 to 11/15/43; Market value — $40,800,076)

0.010

3/1/21

40,000,000

Total Repurchase Agreements

99,818,000

Total Investments — 99.4% (Cost — $545,632,215#)

545,632,215

Other Assets in Excess of Liabilities — 0.6%

3,514,289

Total Net Assets — 100.0%

$549,146,504

#	Aggregate cost for federal income tax purposes is substantially the same.

^(a)	Rate shown represents yield-to-maturity.

^(b)

Variable rate security. Interest rate disclosed is as of the most recent information available. Certain variable rate securities are not based on a published reference rate and spread but are determined by the issuer or agent and are based on current market conditions. These securities do not indicate a reference rate and spread in their description above.

See Notes to Financial Statements.

U.S. Treasury Obligations Portfolio 2021 Semi-Annual Report

Statement of assets and liabilities (unaudited)

February 28, 2021



Assets:
Investments, at value			$445,814,215
Repurchase agreements, at value			99,818,000
Cash			23,287,753
Interest receivable			411,093
*Total Assets*			*569,331,061*

Liabilities:
Payable for securities purchased			20,135,184
Trustees’ fees payable			1,500
Accrued expenses			47,873
*Total Liabilities*			*20,184,557*
Total Net Assets			$549,146,504

Represented by:
Paid-in capital			$549,146,504

See Notes to Financial Statements.

U.S. Treasury Obligations Portfolio 2021 Semi-Annual Report

Statement of operations (unaudited)

For the Six Months Ended February 28, 2021



Investment Income:
*Interest*	$	*415,338*

Expenses:
Fund accounting fees		32,436
Audit and tax fees		19,769
Custody fees		19,626
Trustees’ fees		6,680
Legal fees		5,503
Interest expense		596
Miscellaneous expenses		27,923
*Total Expenses*		112,533
Net Investment Income		302,805
Net Realized Gain on Investments		19,967
Increase in Net Assets From Operations	$	322,772

See Notes to Financial Statements.

U.S. Treasury Obligations Portfolio 2021 Semi-Annual Report

Statements of changes in net assets


For the Six Months Ended February 28, 2021 (unaudited) and the Year Ended August 31, 2020	2021			2020

Operations:
Net investment income	$	302,805			$7,689,444
Net realized gain		19,967			56,697
*Increase in Net Assets From Operations*		*322,772*			*7,746,141*

Capital Transactions:
Proceeds from contributions		375,899,405			1,967,576,021
Value of withdrawals		(812,162,671	)		(1,724,001,453	)
Increase (Decrease) in Net Assets From Capital Transactions		*(436,263,266*	)		*243,574,568*
*Increase (Decrease) in Net Assets*		*(435,940,494*	)		*251,320,709*

Net Assets:
Beginning of period		985,086,998			733,766,289
End of period	$	549,146,504			$985,086,998

See Notes to Financial Statements.

U.S. Treasury Obligations Portfolio 2021 Semi-Annual Report

Financial highlights


For the years ended August 31, unless otherwise noted:
	2021¹			2020			2019			2018			2017			2016

Net assets, end of period (millions)		$549			$985			$734			$583			$705			$694
*Total return²*		*0.04*	%		*0.99*	%		*2.31*	%		*1.45*	%		*0.59*	%		*0.26*	%

Ratios to average net assets:
Gross expenses		0.03	%³		0.03	%		0.03	%		0.04	%		0.04	%		0.03	%
Net expenses⁴		0.03	³		0.03	⁵		0.03			0.04			0.04			0.03
Net investment income		0.08	³		0.92			2.29			1.40			0.59			0.27

¹	For the six months ended February 28, 2021 (unaudited).

Performance figures may reflect compensating balance arrangements, fee waivers and/or expense reimbursements. In the absence of compensating balance arrangements, fee waivers and/or expense reimbursements, the total return would have been lower. Past performance is no guarantee of future results. Total returns for periods of less than one year are not annualized.

³	Annualized.

⁴	The investment manager has voluntarily undertaken to limit Portfolio expenses. Such expense limitations may fluctuate daily and are voluntary and temporary and may be terminated by the investment manager at any time without notice.

⁵	Reflects fee waivers and/or expense reimbursements.

See Notes to Financial Statements.

U.S. Treasury Obligations Portfolio 2021 Semi-Annual Report

Notes to financial statements (unaudited)

1. Organization and significant accounting policies

U.S. Treasury Obligations Portfolio (the “Portfolio”) is a separate diversified investment series of Master Portfolio Trust (the “Trust”). The Trust, a Maryland statutory trust, is registered under the Investment Company Act of 1940, as amended (the “1940 Act”), as an open-end management investment company. The Declaration of Trust permits the Trustees to issue beneficial interests in the Portfolio. At February 28, 2021, all investors in the Portfolio were funds advised or administered by the investment manager of the Portfolio and/or its affiliates.

The following are significant accounting policies consistently followed by the Portfolio and are in conformity with U.S. generally accepted accounting principles (“GAAP”). Estimates and assumptions are required to be made regarding assets, liabilities and changes in net assets resulting from operations when financial statements are prepared. Changes in the economic environment, financial markets and any other parameters used in determining these estimates could cause actual results to differ. Subsequent events have been evaluated through the date the financial statements were issued.

(a) Investment valuation. In accordance with Rule 2a-7 under the 1940 Act, money market instruments are valued at amortized cost, which approximates market value. This method 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 Board of Trustees is responsible for the valuation process and has delegated the supervision of the daily valuation process to the Legg Mason North Atlantic Fund Valuation Committee (the “Valuation Committee”). The Valuation Committee, pursuant to the policies adopted by the Board of Trustees, is responsible for making fair value determinations, evaluating the effectiveness of the Portfolio’s pricing policies, and reporting to the Board of Trustees.

The Portfolio uses valuation techniques to measure fair value that are consistent with the market approach and/or income approach, depending on the type of security and the particular circumstance. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable securities. The income approach uses valuation techniques to discount estimated future cash flows to present value.

U.S. Treasury Obligations Portfolio 2021 Semi-Annual Report

Notes to financial statements (unaudited) (cont’d)

GAAP establishes a disclosure hierarchy that categorizes the inputs to valuation techniques used to value assets and liabilities at measurement date. These inputs are summarized in the three broad levels listed below:

•

Level 1 — quoted prices in active markets for identical investments

•

Level 2 — other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

•

Level 3 — significant unobservable inputs (including the Portfolio’s own assumptions in determining the fair value of investments)

The inputs or methodologies used to value securities are not necessarily an indication of the risk associated with investing in those securities.

The following is a summary of the inputs used in valuing the Portfolio’s assets carried at fair value:


	ASSETS
Description	Quoted Prices (Level 1)		Other Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Short-Term Investments†		—	$	545,632,215		—	$	545,632,215

†	See Schedule of Investments for additional detailed categorizations.

(b) Repurchase agreements. The Portfolio may enter into repurchase agreements with institutions that its subadviser has determined are creditworthy. Each repurchase agreement is recorded at cost. Under the terms of a typical repurchase agreement, the Portfolio acquires a debt security subject to an obligation of the seller to repurchase, and of the Portfolio to resell, the security at an agreed-upon price and time, thereby determining the yield during the Portfolio’s holding period. When entering into repurchase agreements, it is the Portfolio’s policy that its custodian or a third party custodian, acting on the Portfolio’s behalf, take possession of the underlying collateral securities, the market value of which, at all times, at least equals the principal amount of the repurchase transaction, including accrued interest. To the extent that any repurchase transaction maturity exceeds one business day, the value of the collateral is marked-to-market and measured against the value of the agreement in an effort to ensure the adequacy of the collateral. If the counterparty defaults, the Portfolio generally has the right to use the collateral to satisfy the terms of the repurchase transaction. However, if the market value of the collateral declines during the period in which the Portfolio seeks to assert its rights or if bankruptcy proceedings are commenced with respect to the seller of the security, realization of the collateral by the Portfolio may be delayed or limited.

(c) Interest income and expenses. Interest income (including interest income from payment-in-kind securities) consists of interest accrued and discount earned (including both

U.S. Treasury Obligations Portfolio 2021 Semi-Annual Report

original issue and market discount adjusted for amortization of premium) on the investments of the Portfolio. Expenses of the Portfolio are accrued daily. The Portfolio bears all costs of its operations other than expenses specifically assumed by the investment manager.

(d) Method of allocation. Net investment income of the Portfolio is allocated pro rata, based on respective ownership interests, among the Fund and other investors in the Portfolio (the “Holders”) at the time of such determination. Gross realized gains and/or losses of the Portfolio are allocated to the Holders in a manner such that the net asset values per share of each Holder, after each such allocation, is closer to the total of all Holders’ net asset values divided by the aggregate number of shares outstanding for all Holders.

(e) Compensating balance arrangements. The Portfolio has an arrangement with its custodian bank whereby a portion of the custodian’s fees is paid indirectly by credits earned on the Portfolio’s cash on deposit with the bank.

(f) Income taxes. The Portfolio is classified as a partnership for federal income tax purposes. As such, each investor in the Portfolio is treated as owner of its proportionate share of the net assets, income, expenses and realized gains and losses of the Portfolio. Therefore, no federal income tax provision is required. It is intended that the Portfolio’s assets will be managed so an investor in the Portfolio can satisfy the requirements of Subchapter M of the Internal Revenue Code.

Management has analyzed the Portfolio’s tax positions taken on income tax returns for all open tax years and has concluded that as of August 31, 2020, no provision for income tax is required in the Portfolio’s financial statements. The Portfolio’s federal and state income tax returns for tax years for which the applicable statutes of limitations have not expired are subject to examination by the Internal Revenue Service and state departments of revenue.

(g) Other. Purchases, maturities and sales of money market instruments are accounted for on the date of the transaction. Realized gains and losses are calculated on the identified cost basis.

2. Investment management agreement and other transactions with affiliates

Legg Mason Partners Fund Advisor, LLC (“LMPFA”) is the Portfolio’s investment manager and Western Asset Management Company, LLC (“Western Asset”) is the Portfolio’s subadviser. LMPFA and Western Asset are indirect, wholly-owned subsidiaries of Franklin Resources, Inc. (“Franklin Resources”).

Under the investment management agreement, the Portfolio does not pay an investment management fee.

Expense amounts may be voluntarily waived and/or reimbursed from time to time.

U.S. Treasury Obligations Portfolio 2021 Semi-Annual Report

Notes to financial statements (unaudited) (cont’d)

LMPFA is permitted to recapture amounts waived and/or reimbursed to the Portfolio during the same fiscal year under certain circumstances.

All officers and one Trustee of the Trust are employees of Franklin Resources or its affiliates and do not receive compensation from the Trust.

3. Derivative instruments and hedging activities

During the six months ended February 28, 2021, the Portfolio did not invest in derivative instruments.

4. Recent accounting pronouncement

In March 2020, the Financial Accounting Standards Board issued Accounting Standards Update No. 2020-04, Reference Rate Reform (Topic 848) – Facilitation of the Effects of Reference Rate Reform on Financial Reporting (the “ASU”). The amendments in the ASU provide optional temporary financial reporting relief from the effect of certain types of contract modifications due to the planned discontinuation of the London Interbank Offered Rate and other interbank-offered based reference rates as of the end of 2021. The ASU is effective for certain reference rate-related contract modifications that occur during the period March 12, 2020 through December 31, 2022. Management has reviewed the requirements and believes the adoption of this ASU will not have a material impact on the financial statements.

5. Other matters

The outbreak of the respiratory illness COVID-19 (commonly referred to as “coronavirus”) has continued to rapidly spread around the world, causing considerable uncertainty for the global economy and financial markets. The ultimate economic fallout from the pandemic, and the long-term impact on economies, markets, industries and individual issuers, are not known. The COVID-19 pandemic could adversely affect the value and liquidity of the Portfolio’s investments, impair the Portfolio’s ability to satisfy withdrawal requests, and negatively impact the Portfolio’s performance. In addition, the outbreak of COVID-19, and measures taken to mitigate its effects, could result in disruptions to the services provided to the Portfolio by its service providers.

* * *

The Portfolio’s investments, payment obligations, and financing terms may be based on floating rates, such as the London Interbank Offered Rate, or “LIBOR,” which is the offered rate for short-term Eurodollar deposits between major international banks. Plans are underway to phase out the use of LIBOR by the end of 2021. In December 2020, the ICE Benchmark Administration, the administrator of LIBOR, announced that it had commenced a consultation to determine whether to extend publication of certain U.S. dollar LIBOR settings (overnight and one-, three-, six- and twelve-month U.S. dollar LIBOR) to the end of June 2023. There remains uncertainty regarding the nature of any replacement rate and the

U.S. Treasury Obligations Portfolio 2021 Semi-Annual Report

impact of the transition from LIBOR on the Portfolio’s transactions and the financial markets generally. As such, the potential effect of a transition away from LIBOR on the Portfolio or the Portfolio’s investments cannot yet be determined.

U.S. Treasury Obligations Portfolio 2021 Semi-Annual Report

ITEM 2.

CODE OF ETHICS.

Not applicable.

ITEM 3.

AUDIT COMMITTEE FINANCIAL EXPERT.

Not applicable.

ITEM 4.

PRINCIPAL ACCOUNTANT FEES AND SERVICES.

Not applicable.

ITEM 5.

AUDIT COMMITTEE OF LISTED REGISTRANTS.

Not applicable.

ITEM 6.

SCHEDULE OF INVESTMENTS.

Included herein under Item 1.

ITEM 7.

DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Not applicable.

ITEM 8.

PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Not applicable.

ITEM 9.

PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS.

Not applicable.

ITEM 10.

SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

Not applicable.

ITEM 11.

CONTROLS AND PROCEDURES.

(a)

The registrant’s principal executive officer and principal financial officer have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a- 3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”)) are effective as of a date within 90 days of the filing date of this report that includes the disclosure required by this paragraph, based on their evaluation of the disclosure controls and procedures required by Rule 30a-3(b) under the 1940 Act and 15d-15(b) under the Securities Exchange Act of 1934.

(b)

There were no changes in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act) that occurred during the second fiscal quarter of the period covered by this report that have materially affected, or are likely to materially affect the registrant’s internal control over financial reporting.

ITEM 12.

DISCLOSURE OF SECURITIES LENDING ACTIVITIES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Not applicable

ITEM 13.

EXHIBITS.

(a) (1) Not applicable.

Exhibit 99.CODE ETH

(a) (2) Certifications pursuant to section 302 of the Sarbanes-Oxley Act of 2002 attached hereto.

Exhibit 99.CERT

(b) Certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 attached hereto.

Exhibit 99.906CERT

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this Report to be signed on its behalf by the undersigned, there unto duly authorized.


Master Portfolio Trust

By:		/s/ Jane Trust
		Jane Trust
		Chief Executive Officer

Date:		April 22, 2021

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.


By:		/s/ Jane Trust
		Jane Trust
		Chief Executive Officer

Date:		April 22, 2021

By:		/s/ Christopher Berarducci
		Christopher Berarducci
		Principal Financial Officer

Date:		April 22, 2021