U.S. Total Bond Index Master Portfolio is a registered fund series of Master Investment Portfolio (series S000004287). Net assets $3.6B as of 2026-03-31. Index fund.
Showing 15 of 200 holdings by value.
| Holding | Ticker | Value | % of fund |
|---|---|---|---|
| BlackRock Funds III | — | $182.8M | 501.36% |
| BLACKROCK CASH FUNDS | — | $120.5M | 330.39% |
| United States Treasury | — | $20.3M | 55.71% |
| United States Treasury | — | $19.2M | 52.73% |
| United States Treasury | — | $17.4M | 47.66% |
| United States Treasury | — | $17.2M | 47.09% |
| United States Treasury | — | $17.1M | 46.79% |
| United States Treasury | — | $16.8M | 45.97% |
| United States Treasury | — | $16.7M | 45.86% |
| United States Treasury | — | $16.4M | 45.07% |
| United States Treasury | — | $16.3M | 44.70% |
| United States Treasury | — | $15.8M | 43.28% |
| United States Treasury | — | $15.4M | 42.30% |
| United States Treasury | — | $15.2M | 41.58% |
| United States Treasury | — | $15.1M | 41.34% |
| Report date | Net assets |
|---|---|
| 2026-03-31 | $3.6B |
| 2025-12-31 | $3.8B |
| 2025-09-30 | $3.6B |
| 2025-06-30 | $3.1B |
| 2025-03-31 | $3.1B |
| 2024-12-31 | $3.0B |
| 2024-09-30 | $3.0B |
| 2024-06-30 | $2.8B |