AIANX — Inflation-Adjusted Bond Fund
Data updated: 2026-08-28
AIANX — Inflation-Adjusted Bond Fund. Intermediate Treasury / Sovereign Bond · $2.00B AUM · 0.32% expense ratio. Holdings, fees, performance and SEC filings.
AIANX Fund Overview
AIANX — Inflation-Adjusted Bond Fund is a US mutual fund managed by American Century Government Income Trust, 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: American Century Government Income Trust
- Category: Intermediate Treasury / Sovereign Bond
- Assets under management: $2.00B
- 1-year return: 3.3%
- Ticker: AIANX
- SEC CIK: 0000773674
- SEC series ID: S000005969
- Share class ID: C000016439
AIANX Holdings
Top 10 holdings of Inflation-Adjusted Bond Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| United States Treasury Inflation Indexed Bonds | 5.67% |
| United States Treasury Inflation Indexed Bonds | 4.99% |
| United States Treasury Inflation Indexed Bonds | 4.86% |
| United States Treasury Inflation Indexed Bonds | 4.75% |
| United States Treasury Inflation Indexed Bonds | 4.09% |
| United States Treasury Inflation Indexed Bonds | 4.08% |
| United States Treasury Inflation Indexed Bonds | 3.88% |
| United States Treasury Inflation Indexed Bonds | 3.51% |
| United States Treasury Inflation Indexed Bonds | 3.50% |
| United States Treasury Inflation Indexed Bonds | 2.79% |
AIANX Portfolio Allocation
Asset-class allocation of Inflation-Adjusted Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 83.3% |
| Securitized | 8.3% |
| Cash & Equivalents | 6.6% |
| Equity | 1.5% |
| Derivatives | 0.5% |
AIANX Performance
Total returns for AIANX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.2% |
| 1 year | 3.3% |
| 3 years (annualised) | 3.9% |
| 5 years (annualised) | 0.9% |
AIANX Risk Information
Risk metrics for AIANX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 2.8%
AIANX Costs and Fees
AIANX costs about $32 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.32%
- Gross expense ratio: 0.32%
- Portfolio turnover: 44%
- Brokerage commissions: 0.28 bps of average net assets (SEC N-CEN)
AIANX Cashflows
Over the 12 months to 2026-06, Inflation-Adjusted Bond Fund had net outflows of $282.12M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $28.34M |
| 2026-05 | −$11.59M |
| 2026-04 | −$14.93M |
| 2026-03 | −$29.11M |
| 2026-02 | −$44.01M |
| 2026-01 | −$6.86M |
AIANX Debt Constituents
Largest debt holdings of Inflation-Adjusted Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury Inflation Indexed Bonds | 5.67% |
| United States Treasury Inflation Indexed Bonds | 4.99% |
| United States Treasury Inflation Indexed Bonds | 4.86% |
| United States Treasury Inflation Indexed Bonds | 4.75% |
| United States Treasury Inflation Indexed Bonds | 4.09% |
| United States Treasury Inflation Indexed Bonds | 4.08% |
| United States Treasury Inflation Indexed Bonds | 3.88% |
| United States Treasury Inflation Indexed Bonds | 3.51% |
| United States Treasury Inflation Indexed Bonds | 3.50% |
| United States Treasury Inflation Indexed Bonds | 2.79% |
AIANX Prospectus and SEC Filings
Official Inflation-Adjusted Bond 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 Treasury / Sovereign 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.