SDSI · NASDAQ · ETF
American Century Short Duration Strategic Income ETF (SDSI) Price, Holdings & Fees
American Century Short Duration Strategic Income ETF (SDSI) closed at $308.62 on Oct 9, 2026, down 0.94% from the previous close of $311.54.
Share price, past year
1Y +3.40%Monthly closing prices
| Date | Close |
|---|---|
| Oct 9, 2026 | $308.62 |
| Sep 30, 2026 | $305.69 |
| Aug 31, 2026 | $309.82 |
| Jul 31, 2026 | $321.39 |
| Jun 30, 2026 | $308.52 |
| May 29, 2026 | $307.58 |
| Apr 30, 2026 | $298.26 |
| Mar 31, 2026 | $302.52 |
| Feb 27, 2026 | $304.59 |
| Jan 30, 2026 | $304.01 |
| Dec 31, 2025 | $312.51 |
| Nov 28, 2025 | $296.01 |
| Oct 31, 2025 | $294.70 |
Key statistics
- Expense ratio
- 0.32%
- as of Dec 31, 2025
- Net assets
- $218.4M
- as of May 31, 2026
- Holdings
- 388
- as of May 31, 2026
- 52-week range
- $289.49 – $327.83
American Century Short Duration Strategic Income ETF's expense ratio is 0.32%: $32.00 a year on $10,000 invested.
Holdings
American Century Short Duration Strategic Income ETF held 388 investments worth $218.37M as of May 31, 2026. Its largest holding was State Street Institutional US Government Money Market Fund, at 12.26% of the fund.
| # | Holding | % of fund | Value |
|---|---|---|---|
| 1 | State Street Institutional US Government Money Market Fund | 12.26% | $26.77M |
| 2 | U.S. TREASURYT | 10.63% | $23.21M |
| 3 | U.S. TREASURYT | 3.65% | $7.98M |
| 4 | U.S. TREASURYT | 3.41% | $7.46M |
| 5 | U.S. TREASURYT | 2.31% | $5.05M |
| 6 | State Street Navigator Securities Lending Trust - State Street Navigator Securities Lending Government Money Market Portfolio | 0.72% | $1.57M |
| 7 | RIVERSPRING HLTH SENIOR | 0.58% | $1.27M |
| 8 | CMS Energy CorpCMS | 0.56% | $1.22M |
| 9 | PMT Loan Trust 2025-CNF1 | 0.55% | $1.20M |
| 10 | Northern Trust CorpNTRS | 0.54% | $1.19M |
| 11 | Global Atlantic Fin Co | 0.52% | $1.13M |
| 12 | BNP Paribas SA | 0.52% | $1.13M |
| 13 | Expand Energy CorpEXE | 0.51% | $1.12M |
| 14 | United Airlines IncUAL | 0.51% | $1.12M |
| 15 | Standard Industries Inc/NY | 0.50% | $1.10M |
| 16 | Australia & New Zealand Banking Group Ltd | 0.50% | $1.09M |
| 17 | Enterprise Products Operating LLCEPD | 0.49% | $1.08M |
| 18 | Herc Holdings IncHRI | 0.49% | $1.07M |
| 19 | HSBC Holdings PLCHSBC | 0.49% | $1.06M |
| 20 | AMERICAN AIRLINES INCAAL | 0.49% | $1.06M |
| 21 | Targa Resources CorpTRGP | 0.48% | $1.05M |
| 22 | Verus Securitization Trust 2026-4 | 0.48% | $1.04M |
| 23 | Swedbank AB | 0.47% | $1.04M |
| 24 | Freedom Mortgage Holdings LLC | 0.47% | $1.03M |
| 25 | U.S. TREASURYT | 0.47% | $1.03M |
Top 25 of 388 holdings, as of May 31, 2026. Percentages are of the fund's net assets.
What the fund owns
| Asset type | % of fund |
|---|---|
| Bonds and other debt | 64.69% |
| Mortgage-backed securities | 23.91% |
| Cash and short-term investments | 12.98% |
| Preferred stock | 9.71% |
| Loans | 0.29% |
| Collateralized debt obligations | 0.14% |
| Interest rate derivatives | −0.01% |
| Credit derivatives | −0.10% |
| Country | % of fund |
|---|---|
| United States | 97.86% |
| Canada | 3.17% |
| United Kingdom | 1.76% |
| France | 1.24% |
| Netherlands | 0.99% |
| Sweden | 0.94% |
| Australia | 0.87% |
| Luxembourg | 0.81% |
| Spain | 0.76% |
| Mexico | 0.75% |
Shares of net assets from the fund's N-PORT report. Funds that borrow can add up to more than 100%, with borrowing (such as repurchase agreements) shown as a negative share.
Monthly total returns
Over the 3 months to May 31, 2026, American Century Short Duration Strategic Income ETF's total return was +0.34%, as reported to the SEC.
| Month | Total return |
|---|---|
| May 31, 2026 | +0.36% |
| Apr 30, 2026 | +0.78% |
| Mar 31, 2026 | −0.79% |
The fund's own total returns as reported to the SEC (N-PORT), including reinvested distributions. Not the sample prices above.
Fund profile
- Name
- American Century Short Duration Strategic Income ETF
- Ticker
- SDSI
- Exchange
- NASDAQ
- Fund type
- ETF
- Trust
- AMERICAN CENTURY ETF TRUST
- SEC series ID
- S000077487
- SEC CIK
- 0001710607
- Fractional shares
- Yes
Recent SEC filings
- Jul 29, 2026
- 485BPOSProspectus updateSep 14, 2026
- 485BPOSProspectus updateMay 20, 2026
- 485BPOSProspectus updateApr 30, 2026
- Apr 27, 2026
- 485BPOSProspectus updateDec 29, 2025
- Oct 29, 2025
- 485BPOSProspectus updateJul 30, 2025
Shareholder reports and prospectuses are filed by AMERICAN CENTURY ETF TRUST, the trust behind American Century Short Duration Strategic Income ETF, and cover all of its funds.
Frequently asked questions
What is SDSI's price?
American Century Short Duration Strategic Income ETF (SDSI) closed at $308.62 on Oct 9, 2026, down 0.94% from the previous close of $311.54.
What is SDSI's expense ratio?
American Century Short Duration Strategic Income ETF's expense ratio is 0.32%: $32.00 a year on $10,000 invested.
What does SDSI hold?
American Century Short Duration Strategic Income ETF held 388 investments worth $218.37M as of May 31, 2026. Its largest holding was State Street Institutional US Government Money Market Fund, at 12.26% of the fund. Its five largest holdings were State Street Institutional US Government Money Market Fund, U.S. TREASURY, U.S. TREASURY, U.S. TREASURY, U.S. TREASURY.
How has SDSI performed?
Over the 3 months to May 31, 2026, American Century Short Duration Strategic Income ETF's total return was +0.34%, as reported to the SEC.
Sources and methodology
Holdings, net assets and monthly returns come from the fund's N-PORT filing with the SEC, as of May 31, 2026 (filed Jul 29, 2026). The expense ratio is from the fund's prospectus or shareholder report, as of Dec 31, 2025. Prices are generated sample data for development. Data sources and disclosures