ACSNX — Short Duration Fund
Data updated: 2026-08-28
ACSNX — Short Duration Fund. Intermediate Total / Aggregate Bond · $1.01B AUM · 0.57% expense ratio. Holdings, fees, performance and SEC filings.
ACSNX Fund Overview
ACSNX — Short Duration Fund is a US mutual fund managed by American Century Investment Trust, categorised as Intermediate Total / Aggregate Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: American Century Investment Trust
- Category: Intermediate Total / Aggregate Bond
- Assets under management: $1.01B
- 1-year return: 3.6%
- Ticker: ACSNX
- SEC CIK: 0000908406
- SEC series ID: S000014385
- Share class ID: C000039177
ACSNX Holdings
Top 10 holdings of Short Duration Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| U.s. Treasury | 8.06% |
| U.s. Treasury | 6.78% |
| State Street Institutional US Government Money Market Fund | 3.49% |
| U.s. Treasury | 2.95% |
| U.s. Treasury | 2.67% |
| U.s. Treasury | 2.17% |
| U.s. Treasury | 2.00% |
| U.s. Treasury | 1.97% |
| U.s. Treasury | 1.60% |
| U.s. Treasury | 1.32% |
ACSNX Portfolio Allocation
Asset-class allocation of Short Duration Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 64.1% |
| Securitized | 25.5% |
| Equity | 6.5% |
| Cash & Equivalents | 3.5% |
| Loans | 1.2% |
ACSNX Performance
Total returns for ACSNX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.1% |
| 1 year | 3.6% |
| 3 years (annualised) | 5.0% |
| 5 years (annualised) | 2.3% |
ACSNX Risk Information
Risk metrics for ACSNX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 1.1%
ACSNX Costs and Fees
ACSNX costs about $57 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.57%
- Gross expense ratio: 0.57%
- Portfolio turnover: 197%
- Brokerage commissions: 0.85 bps of average net assets (SEC N-CEN)
ACSNX Cashflows
Over the 12 months to 2026-06, Short Duration Fund had net outflows of $129.14M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $11.86M |
| 2026-05 | $7.74M |
| 2026-04 | −$8.88M |
| 2026-03 | −$28.22M |
| 2026-02 | −$1.04M |
| 2026-01 | −$6.32M |
ACSNX Debt Constituents
Largest debt holdings of Short Duration Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| U.s. Treasury | 8.06% |
| U.s. Treasury | 6.78% |
| U.s. Treasury | 2.95% |
| U.s. Treasury | 2.67% |
| U.s. Treasury | 2.17% |
| U.s. Treasury | 2.00% |
| U.s. Treasury | 1.97% |
| U.s. Treasury | 1.60% |
| U.s. Treasury | 1.32% |
| U.s. Treasury | 1.09% |
ACSNX Prospectus and SEC Filings
Official Short Duration Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-07-29
- Prospectus (485BPOS) — filed 2025-07-29
- Prospectus (485BPOS) — filed 2024-07-29
- Portfolio holdings (N-PORT) — filed 2026-08-28
- Portfolio holdings (N-PORT) — filed 2026-05-29
- Portfolio holdings (N-PORT) — filed 2026-02-27
- Annual census (N-CEN) — filed 2026-06-11
- Annual census (N-CEN) — filed 2025-06-11
Related Funds
Other Intermediate Total / Aggregate Bond 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.