MPNXX — Prime Portfolio

Data updated: 2026-02-27

MPNXX — Prime Portfolio. Money Market · 0.70% expense ratio. Holdings, fees, performance and SEC filings.

MPNXX Fund Overview

MPNXX — Prime Portfolio is a US mutual fund managed by Morgan Stanley Institutional Liquidity Funds, categorised as Money Market. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.

MPNXX Investment Objective and Strategy

Prime Portfolio describes its objective and strategy as follows, from its latest prospectus filed with the SEC by Morgan Stanley Institutional Liquidity Funds.

Investment objective

"The Prime Portfolio (the ""Fund"") seeks preservation of capital, daily liquidity and maximum current income."

Principal investment strategy

"The Fund invests in liquid, high quality U.S. dollar-denominated money market instruments of U.S. and foreign financial corporations and U.S. non-financial corporations. The Fund also invests in obligations issued or guaranteed by the U.S. Government and its agencies and instrumentalities. The Fund's money market investments may include commercial paper, corporate debt obligations, debt obligations (including certificates of deposit and promissory notes) of U.S. banks or foreign banks, or of U.S. branches or subsidiaries of foreign banks, or foreign branches of U.S. banks (such as Yankee obligations), certificates of deposit of savings banks and savings and loan organizations, asset-backed securities, repurchase agreements and municipal obligations. The Fund may also invest in U.S. dollar-denominated foreign securities and money market instruments.

The Fund operates as an ""institutional money market fund,"" which is neither a ""government money market fund"" nor ""retail money market fund"" as such terms are defined or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (the ""1940 Act""). As such, the Fund is required to price and transact in its shares at a net asset value per share (""NAV"") reflecting market-based values of its portfolio holdings (i.e., at a ""floating"" NAV), rounded to a minimum of the fourth decimal place. Like other money market funds of its type, the Fund is subject to the possible imposition of liquidity fees and/or redemption gates."

MPNXX Costs and Fees

MPNXX costs about $70 per $10,000 invested per year in fund expenses.

  • Net expense ratio: 0.70%
  • Gross expense ratio: 0.72%

MPNXX Debt Constituents

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

MPNXX Prospectus and SEC Filings

Official Prime Portfolio filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.

Related Funds

Other Money Market funds tracked on ABC INVEST:

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.