UPRXX — UBS Prime Reserves Fund

UPRXX Fund Overview

UPRXX — UBS Prime Reserves Fund is a US mutual fund managed by UBS Series Funds, categorised as Money Market. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.

• Type: US mutual fund
• Manager: UBS Series Funds
• Category: Money Market
• Ticker: UPRXX
• SEC CIK: 0001060517
• SEC series ID: S000052306
• Share class ID: C000164452

UPRXX Investment Objective and Strategy

UBS Prime Reserves Fund describes its objective and strategy as follows, from its latest prospectus filed with the SEC by UBS Series Funds.

Investment objective

Maximum current income consistent with liquidity and the preservation of capital.

Principal investment strategy

Principal investments The fund is a money market fund and seeks to maintain a stable price of $1.00 per share. The fund seeks to achieve its objective by investing in a diversified portfolio of high quality money market instruments of governmental and private issuers. These may include: short-term obligations of the US government and its agencies and instrumentalities; repurchase agreements; obligations of issuers in the financial services group of industries; commercial paper, other corporate obligations and asset-backed securities; and municipal money market instruments. Money market instruments generally are short-term debt obligations and similar securities. They also may include longer-term bonds that have variable interest rates or other special features that give them the financial characteristics of short-term debt.

The fund invests in foreign money market instruments only if they are denominated in US dollars. The fund will, under normal circumstances, invest more than 25% of its total assets in the financial services group of industries. The fund invests in securities through an underlying master fund. The fund and its corresponding master fund have the same objective. Unless otherwise indicated, references to the fund include the master fund. The fund is a retail money market fund, as such term is defined in the rule governing money market funds and related interpretations. Retail money market funds are money market funds that have policies and procedures reasonably designed to limit all beneficial owners of the fund to natural persons. As a retail money market fund, the fund is permitted to seek to maintain a stable price per share.

The fund may be subject to the possible imposition of a liquidity fee and/or temporary redemption gate should certain triggering events occur. Management process UBS Asset Management (Americas) Inc. (UBS AM) acts as the investment advisor. As investment advisor, UBS AM makes the funds investment decisions. UBS AM selects money market instruments for the fund based on its assessment of relative values and changes in market and economic conditions. UBS AM considers safety of principal and liquidity in selecting securities for the fund and thus may not buy securities that pay the highest yield.

UPRXX Costs and Fees

UPRXX costs about $18 per $10,000 invested per year in fund expenses.

• Net expense ratio: 0.18%
• Gross expense ratio: 0.18%

UPRXX Debt Constituents

No individual debt constituents are reported in UBS Prime Reserves Fund's latest SEC N-PORT filing.

UPRXX Prospectus and SEC Filings

Official UBS Prime Reserves Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.

• Prospectus (485BPOS) — filed 2026-08-27
• Prospectus (485BPOS) — filed 2025-08-26
• Prospectus supplement (497) — filed 2024-08-30
• Annual census (N-CEN) — filed 2025-07-14
• Annual census (N-CEN) — filed 2024-07-15
• Annual census (N-CEN) — filed 2023-07-13

Related Funds

Other Money Market funds tracked on ABC INVEST:

• Emerald Growth Fund (HSPCX)
• Barings Active Short Duration Bond Fund (BXDIX)
• IVA Worldwide Fund (IVWAX)
• Stadion Tactical Growth Fund (ETFDX)
• BBH Partner Fund - Select Short Term Assets (BBSTX)

Data Sources

ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.