Columbia U.S. Treasury Index Fund

C000032990 Fund Overview

Columbia U.S. Treasury Index Fund is a US mutual fund managed by Columbia Funds Series Trust I, categorised as Intermediate Treasury / Sovereign Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.

• Type: US mutual fund
• Manager: Columbia Funds Series Trust I
• Category: Intermediate Treasury / Sovereign Bond
• Assets under management: $613.98M
• 1-year return: -2.7%
• SEC CIK: 0000773757
• SEC series ID: S000012098
• Share class ID: C000032990

C000032990 Investment Objective and Strategy

Columbia U.S. Treasury Index Fund describes its objective and strategy as follows, from its latest prospectus filed with the SEC by Columbia Funds Series Trust I.

Investment objective

Columbia U.S. Treasury Index Fund (the Fund) seeks total return that corresponds to the total return of the FTSE USBIG Treasury Index, before fees and expenses.

Principal investment strategy

Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in securities that comprise the FTSE USBIG Treasury Index (the Index). The Index is an unmanaged index composed of U.S. Treasury notes and bonds with remaining maturities of at least one year and outstanding principal of at least $5 billion and which are included in the FTSE U.S. Broad Investment-Grade Bond Index. Different securities have different weightings in the Index. Securities in the Index are weighted by market value; that is, the price per bond or note multiplied by the number of bonds or notes outstanding. In seeking to match the performance of the Index, before fees and expenses, the investment manager attempts to allocate the Funds assets among securities in the Index.

The Fund will not hold all of the securities in the Index.

C000032990 Holdings

Top 10 holdings of Columbia U.S. Treasury Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.

View all C000032990 holdings

C000032990 Portfolio Allocation

Asset-class allocation of Columbia U.S. Treasury Index Fund by percentage of net assets, from the latest SEC N-PORT filing.

C000032990 Performance

Total returns for C000032990 (as of 2026-10-01), from SEC filings.

C000032990 Risk Information

Risk metrics for C000032990, derived from monthly returns in SEC filings.

• 1-year volatility (annualised): 6.1%

C000032990 Costs and Fees

C000032990 costs about $97 per $10,000 invested per year in fund expenses.

• Net expense ratio: 0.97%
• Gross expense ratio: 1.20%
• Portfolio turnover: 44%
• Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)

C000032990 Cashflows

Over the 12 months to 2026-07, Columbia U.S. Treasury Index Fund had net outflows of $243.01M, from monthly SEC N-PORT filings.

C000032990 Debt Constituents

Largest debt holdings of Columbia U.S. Treasury Index Fund by percentage of net assets, from the latest SEC N-PORT filing.

C000032990 Prospectus and SEC Filings

Official Columbia U.S. Treasury Index Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.

• Prospectus (485BPOS) — filed 2026-08-24
• Prospectus (485BPOS) — filed 2025-08-25
• Prospectus (485BPOS) — filed 2024-08-23
• Portfolio holdings (N-PORT) — filed 2026-09-28
• Portfolio holdings (N-PORT) — filed 2026-06-25
• Portfolio holdings (N-PORT) — filed 2026-03-27
• Annual census (N-CEN) — filed 2026-07-07
• Annual census (N-CEN) — filed 2025-07-08

Related Funds

Other Intermediate Treasury / Sovereign Bond funds tracked on ABC INVEST:

• Vanguard Intermediate-Term Bond Index Fund (VBIIX)
• Vanguard Intermediate-Term Treasury Index Fund (VSIGX)
• iShares U.S. Treasury Bond ETF (GOVT)
• iShares 3-7 Year Treasury Bond ETF (IEI)
• Fidelity SAI Inflation-Protected Bond Index Fund (FSPWX)

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.