LUTAX
Columbia U.S. Treasury Index Fund
COLUMBIA FUNDS SERIES TRUST I
Index fund
Expense ratio1
0.32%
Net assets2
$822.54M
Holdings2
285
Category
Taxable Bond
2025 return3
5.86%

Investment objective & strategy

As of Aug. 25, 2025 · prospectus

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.

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 … 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.

Top holdings

As of Jan. 31, 2026 · N-PORT
SecurityTickerValue% of fund
US TREASURY N/B $7.36M 0.90%
US TREASURY N/B $7.23M 0.88%
US TREASURY N/B $7.15M 0.87%
US TREASURY N/B $7.14M 0.87%
US TREASURY N/B $7.02M 0.85%
US TREASURY N/B $6.96M 0.85%
US TREASURY N/B $6.96M 0.85%
US TREASURY N/B $6.88M 0.84%
US TREASURY N/B $6.46M 0.78%
US TREASURY N/B $6.26M 0.76%
View all holdings →

Allocation by sector

As of January 31, 2026 · N-PORT
View portfolio breakdown →

Portfolio moves

Oct 31, 2025 → Jan 31, 2026
Opened
14
Exited
12
Increased
20
Decreased
35
Unchanged
216

How many positions this fund opened, exited, grew, trimmed, or left unchanged between its two most recent N-PORT snapshots — net changes between point-in-time reports, not a trade log.

View portfolio moves →

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Advisers

As of April 30, 2025 · N-CEN
FirmRole
Columbia Management Investment Advisers, LLC Adviser

Footnotes

  1. Expense ratio as of August 25, 2025, from the fund's prospectus.
  2. Net assets and holdings count as of January 31, 2026, from the fund's N-PORT filing.
  3. Total return for calendar year 2025, before tax and after fund expenses. Computed by compounding the twelve monthly total returns the fund reported in its SEC N-PORT filings for 2025 (the latest prospectus does not yet chart this year).

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