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American Funds Intermediate Bond Fund of America® Class A AIBAX
Historical return decomposition and an investable replication portfolio, using data through 2026-10-09.
Fund and replication metrics
| Measure | AIBAX | Replication |
|---|---|---|
| Annualized growth | 0.8% | 0.9% |
| Annualized volatility | 4.0% | 3.8% |
| Sharpe ratio | 0.21 | 0.25 |
| Maximum drawdown | 10.2% | 10.2% |
| Replication fit (R²) | 0.96 · Tracking error 0.8% | |
Replication portfolio
The published portfolio below is the investable basket used to model AIBAX’s historical return behavior.
| Ticker | Building block | Weight |
|---|---|---|
| VGIT | FI · Intermediate Gov | 38.8% |
| VGSH | FI · Short Gov | 29.0% |
| MBB | FI · MBS | 14.5% |
| STIP | FI · Short TIPS | 8.9% |
| VCSH | FI · Short Corp | 8.8% |