FSIXX — Fidelity Investments Money Market Treasury Only Portfolio

FSIXX Fund Overview

FSIXX — Fidelity Investments Money Market Treasury Only Portfolio is a US mutual fund managed by Fidelity Colchester Street Trust, 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: Fidelity Colchester Street Trust
• Category: Money Market
• Ticker: FSIXX
• SEC CIK: 0000356173
• SEC series ID: S000004818
• Share class ID: C000013037

FSIXX Costs and Fees

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

• Net expense ratio: 0.18%
• Gross expense ratio: 0.21%

FSIXX Debt Constituents

No individual debt constituents are reported in Fidelity Investments Money Market Treasury Only Portfolio's latest SEC N-PORT filing.

FSIXX Prospectus and SEC Filings

Official Fidelity Investments Money Market Treasury Only Portfolio filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.

• Prospectus (485BPOS) — filed 2026-05-26
• Annual census (N-CEN) — filed 2026-06-11

Related Funds

Other Money Market funds tracked on ABC INVEST:

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

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.