TIIPX Performance — T. Rowe Price Inflation Protected Bond Fund, Inc., I Class
Data updated: 2026-08-12
TIIPX returned +1.58% year to date and +4.74% over one year to May 2026. Annualised returns are +3.72% over 3 years and +0.65% over 5 years. The fund trailed its Intermediate Government Bond category average: $100 invested three years ago grew to $112, against $112 for the category, and to $105 over one year, against $105. Volatility over the past three years was 4.21% a year. In the 12 months to May 2026 the fund took in a net $82.8M, and assets reached $576.33M.
TIIPX Growth of $100
What $100 invested in T. Rowe Price Inflation Protected Bond Fund, Inc. grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Intermediate Government Bond category average over the same months.
| Period | TIIPX | Category average |
|---|---|---|
| 1 year (Jun 2025 – May 2026) | $105 | $105 |
| 3 years (Jun 2023 – May 2026) | $112 | $112 |
| 5 years (Jun 2021 – May 2026) | $103 | $104 |
| Since data start (Sep 2019 – May 2026) | $116 | $111 |
TIIPX Trailing Returns
Total returns to May 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +1.58% |
| 1 year | +4.74% |
| 3 years (annualised) | +3.72% |
| 5 years (annualised) | +0.65% |
TIIPX Annual Returns
Calendar-year total returns of T. Rowe Price Inflation Protected Bond Fund, Inc., compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–May) | +1.58% |
| 2025 | +6.83% |
| 2024 | +1.76% |
| 2023 | +2.74% |
| 2022 | −12.72% |
| 2021 | +5.51% |
| 2020 | +11.23% |
| 2019 (Sep–Dec) | −0.43% |
TIIPX 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 | +0.3% | +1.3% | −1.4% | +1.2% | +0.1% | — | — | — | — | — | — | — |
| 2025 | +1.2% | +2.3% | +0.5% | +0.1% | −0.6% | +0.9% | +0.1% | +1.6% | +0.3% | +0.4% | +0.1% | −0.4% |
| 2024 | +0.2% | −1.0% | +0.7% | −1.6% | +1.8% | +0.7% | +1.8% | +0.8% | +1.5% | −1.9% | +0.5% | −1.6% |
| 2023 | +2.1% | −1.6% | +2.4% | +0.2% | −1.5% | −0.5% | 0.0% | −0.9% | −1.9% | −0.7% | +2.5% | +2.6% |
| 2022 | −2.1% | +0.8% | −1.8% | −2.4% | −1.0% | −2.8% | +3.8% | −2.8% | −6.7% | +1.2% | +1.9% | −1.2% |
| 2021 | +0.3% | −1.6% | 0.0% | +1.4% | +1.1% | +0.7% | +2.5% | −0.1% | −0.7% | +1.2% | +0.7% | +0.1% |
| 2020 | +2.1% | +1.0% | −1.5% | +2.6% | +0.6% | +1.2% | +2.4% | +0.9% | −0.4% | −0.6% | +1.2% | +1.2% |
| 2019 | — | — | — | — | — | — | — | — | −1.1% | +0.1% | +0.2% | +0.4% |
TIIPX Risk
Risk measures from monthly returns over Jun 2023 – May 2026.
- 3-year volatility (annualised): 4.21%
- 3-year Sharpe ratio: -0.19 (vs 4.5% risk-free rate)
- Best month: +2.61% (Dec 2023)
- Worst month: −1.90% (Oct 2024)
TIIPX Fund Flows
Monthly money in and out of T. Rowe Price Inflation Protected Bond Fund, Inc., from SEC Form N-PORT.
- 12-month net flow: $82.8M
- 12-month gross sales (incl. reinvestments): $184.9M
- Sales ÷ redemptions: 1.81×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| May 2026 | $10.7M | $5.7M | $5.0M |
| Apr 2026 | $95.2M | $6.9M | $88.3M |
| Mar 2026 | $6.8M | $6.1M | $684K |
| Feb 2026 | $9.6M | $8.2M | $1.3M |
| Jan 2026 | $7.9M | $7.5M | $383K |
| Dec 2025 | $19.3M | $9.6M | $9.8M |
| Nov 2025 | $7.3M | $7.2M | $81K |
| Oct 2025 | $5.3M | $10.3M | −$5.0M |
| Sep 2025 | $4.5M | $6.0M | −$1.4M |
| Aug 2025 | $6.3M | $8.4M | −$2.1M |
| Jul 2025 | $6.2M | $11.8M | −$5.6M |
| Jun 2025 | $5.9M | $14.5M | −$8.5M |
TIIPX Assets Under Management
Net assets of T. Rowe Price Inflation Protected Bond Fund, Inc. by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-05-31 | $576.33M |
| 2026-02-28 | $484.03M |
| 2025-11-30 | $468.85M |
| 2025-08-31 | $488.85M |
| 2025-05-31 | $494.61M |
| 2025-02-28 | $466.68M |
| 2024-11-30 | $458.99M |
| 2024-08-31 | $489.62M |
| 2024-05-31 | $448.48M |
| 2024-02-29 | $399.00M |
| 2023-11-30 | $418.35M |
| 2023-08-31 | $476.55M |
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.