PRKIX Performance — T. Rowe Price U.S. Treasury Intermediate Index Fund, I Class
Data updated: 2026-08-12
PRKIX returned −0.35% year to date and +3.35% over one year to May 2026. Annualised returns are +3.04% over 3 years and −0.55% over 5 years. The fund trailed its Intermediate Government Bond category average: $100 invested three years ago grew to $109, against $112 for the category, and to $103 over one year, against $105. Volatility over the past three years was 5.09% a year. In the 12 months to May 2026 the fund lost a net $4.6M, and assets reached $441.23M.
PRKIX Growth of $100
What $100 invested in T. Rowe Price U.S. Treasury Intermediate Index Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Intermediate Government Bond category average over the same months.
| Period | PRKIX | Category average |
|---|---|---|
| 1 year (Jun 2025 – May 2026) | $103 | $105 |
| 3 years (Jun 2023 – May 2026) | $109 | $112 |
| 5 years (Jun 2021 – May 2026) | $97 | $104 |
| Since data start (Sep 2019 – May 2026) | $101 | $111 |
PRKIX Trailing Returns
Total returns to May 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | −0.35% |
| 1 year | +3.35% |
| 3 years (annualised) | +3.04% |
| 5 years (annualised) | −0.55% |
PRKIX Annual Returns
Calendar-year total returns of T. Rowe Price U.S. Treasury Intermediate Index Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–May) | −0.35% |
| 2025 | +7.57% |
| 2024 | +0.82% |
| 2023 | +3.14% |
| 2022 | −12.03% |
| 2021 | −2.88% |
| 2020 | +8.03% |
| 2019 (Sep–Dec) | −1.48% |
PRKIX Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | −0.1% | +1.9% | −1.8% | −0.1% | −0.3% | — | — | — | — | — | — | — |
| 2025 | +0.6% | +2.1% | +0.5% | +1.3% | −0.8% | +1.3% | −0.4% | +1.5% | +0.3% | +0.5% | +0.9% | −0.4% |
| 2024 | +0.1% | −1.7% | +0.5% | −2.3% | +1.6% | +0.9% | +2.5% | +1.3% | +1.1% | −2.8% | +0.7% | −1.2% |
| 2023 | +2.6% | −2.8% | +2.7% | +0.7% | −1.2% | −1.4% | −0.1% | −0.5% | −1.9% | −1.1% | +3.2% | +3.1% |
| 2022 | −1.8% | −0.3% | −3.7% | −2.9% | +0.7% | −1.0% | +2.4% | −3.3% | −3.8% | −0.8% | +2.8% | −0.7% |
| 2021 | −0.4% | −1.6% | −1.3% | +0.8% | +0.4% | +0.1% | +1.4% | −0.4% | −0.9% | −0.8% | +0.4% | −0.6% |
| 2020 | +2.4% | +2.3% | +2.6% | +0.4% | +0.3% | +0.1% | +0.6% | −0.4% | +0.1% | −0.7% | +0.2% | +0.1% |
| 2019 | — | — | — | — | — | — | — | — | −0.9% | +0.3% | −0.7% | −0.3% |
PRKIX Risk
Risk measures from monthly returns over Jun 2023 – May 2026.
- 3-year volatility (annualised): 5.09%
- 3-year Sharpe ratio: -0.29 (vs 4.5% risk-free rate)
- Best month: +3.22% (Nov 2023)
- Worst month: −2.76% (Oct 2024)
PRKIX Fund Flows
Monthly money in and out of T. Rowe Price U.S. Treasury Intermediate Index Fund, from SEC Form N-PORT.
- 12-month net flow: −$4.6M
- 12-month gross sales (incl. reinvestments): $135.1M
- Sales ÷ redemptions: 0.97×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| May 2026 | $7.0M | $10.6M | −$3.5M |
| Apr 2026 | $6.8M | $12.8M | −$6.0M |
| Mar 2026 | $9.6M | $11.2M | −$1.7M |
| Feb 2026 | $12.1M | $20.1M | −$8.0M |
| Jan 2026 | $15.0M | $12.4M | $2.6M |
| Dec 2025 | $15.3M | $12.8M | $2.5M |
| Nov 2025 | $14.9M | $11.2M | $3.8M |
| Oct 2025 | $13.3M | $7.5M | $5.7M |
| Sep 2025 | $12.2M | $8.3M | $3.8M |
| Aug 2025 | $10.4M | $9.6M | $804K |
| Jul 2025 | $10.1M | $7.5M | $2.7M |
| Jun 2025 | $8.4M | $15.8M | −$7.4M |
PRKIX Assets Under Management
Net assets of T. Rowe Price U.S. Treasury Intermediate Index Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-05-31 | $441.23M |
| 2026-02-28 | $466.31M |
| 2025-11-30 | $467.10M |
| 2025-08-31 | $450.33M |
| 2025-05-31 | $448.01M |
| 2025-02-28 | $460.45M |
| 2024-11-30 | $465.60M |
| 2024-08-31 | $646.02M |
| 2024-05-31 | $773.90M |
| 2024-02-29 | $792.87M |
| 2023-11-30 | $802.38M |
| 2023-08-31 | $799.61M |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.