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Performance
Performance Chart
The chart shows the growth of an initial investment of $10,000 in T. Rowe Price Mid-Cap Index Fund, comparing it to the performance of the S&P 500 index or another benchmark. All prices have been adjusted for splits and dividends.
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Returns By Period
T. Rowe Price Mid-Cap Index Fund (TRMSX) has returned -5.66% so far this year and 15.19% over the past 12 months.
T. Rowe Price Mid-Cap Index Fund
- 1D
- -0.62%
- 1M
- -7.91%
- YTD
- -5.66%
- 6M
- -6.18%
- 1Y
- 15.19%
- 3Y*
- 15.33%
- 5Y*
- —
- 10Y*
- —
Benchmark (S&P 500 Index)
- 1D
- 2.91%
- 1M
- -5.09%
- YTD
- -4.63%
- 6M
- -2.39%
- 1Y
- 16.33%
- 3Y*
- 16.69%
- 5Y*
- 10.18%
- 10Y*
- 12.16%
Monthly Returns
Based on dividend-adjusted daily data since May 13, 2021, TRMSX's average daily return is +0.03%, while the average monthly return is +0.58%. At this rate, your investment would double in approximately 10.0 years.
Historically, 59% of months were positive and 41% were negative. The best month was Nov 2024 with a return of +12.1%, while the worst month was Apr 2022 at -10.7%. The longest winning streak lasted 7 consecutive months, and the longest losing streak was 3 months.
On a daily basis, TRMSX closed higher 51% of trading days. The best single day was Apr 9, 2025 with a return of +10.7%, while the worst single day was Apr 3, 2025 at -7.0%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0.72% | 1.71% | -7.91% | -5.66% | |||||||||
| 2025 | 8.35% | -9.78% | -5.64% | 0.42% | 7.98% | 5.56% | 2.41% | 3.73% | 0.98% | -0.85% | -0.09% | 0.38% | 12.61% |
| 2024 | -1.36% | 6.59% | 3.06% | -6.15% | 2.39% | 0.54% | 3.83% | 1.56% | 2.05% | 1.76% | 12.07% | -6.61% | 19.98% |
| 2023 | 11.27% | -1.50% | -1.53% | -2.36% | 1.38% | 8.30% | 5.66% | -3.45% | -4.31% | -5.80% | 11.83% | 9.17% | 29.90% |
| 2022 | -9.74% | -0.79% | 0.51% | -10.71% | -2.98% | -9.55% | 10.49% | -2.03% | -9.89% | 6.75% | 4.10% | -6.52% | -28.56% |
| 2021 | 5.49% | 3.85% | 0.10% | 1.83% | -4.26% | 6.62% | -5.97% | 0.47% | 7.68% |
Benchmark Metrics
T. Rowe Price Mid-Cap Index Fund has an annualized alpha of -4.98%, beta of 1.18, and R² of 0.74 versus S&P 500 Index. Calculated based on daily prices since May 14, 2021.
- This fund participated in 113.58% of S&P 500 Index downside but only 97.09% of its upside — more exposed to losses than it benefited from rallies.
- This fund had an annualized alpha of -4.98% versus S&P 500 Index — delivering less than market exposure alone would predict.
- Alpha
- -4.98%
- Beta
- 1.18
- R²
- 0.74
- Upside Capture
- 97.09%
- Downside Capture
- 113.58%
Expense Ratio
TRMSX has an expense ratio of 0.14%, which is considered low.
Return for Risk
Risk / Return Rank
TRMSX ranks 16 for risk / return — in the bottom 16% of mutual funds on our site. This means you're taking on significantly more risk than the returns justify. Consider whether the potential upside is worth the volatility, or explore alternatives with better risk / return profiles.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for T. Rowe Price Mid-Cap Index Fund (TRMSX) and compare them to a chosen benchmark (S&P 500 Index).
| TRMSX | Benchmark | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.60 | 0.90 | -0.29 |
Sortino ratioReturn per unit of downside risk | 1.03 | 1.39 | -0.35 |
Omega ratioGain probability vs. loss probability | 1.14 | 1.21 | -0.07 |
Calmar ratioReturn relative to maximum drawdown | -0.04 | 1.40 | -1.44 |
Martin ratioReturn relative to average drawdown | -0.14 | 6.61 | -6.75 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Explore TRMSX risk-adjusted metrics in detail
Dive deeper into individual metrics with historical trends, benchmark comparisons, and performance across different time periods.
Dividends
Dividend History
T. Rowe Price Mid-Cap Index Fund provided a 6.87% dividend yield over the last twelve months, with an annual payout of $1.43 per share. The fund has been increasing its distributions for 2 consecutive years.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 |
|---|---|---|---|---|---|---|
| Dividend | $1.43 | $1.43 | $0.41 | $0.15 | $0.26 | $0.79 |
Dividend yield | 6.87% | 6.49% | 1.98% | 0.86% | 1.92% | 4.01% |
Monthly Dividends
The table displays the monthly dividend distributions for T. Rowe Price Mid-Cap Index Fund. The dividends shown in the table have been adjusted to account for any splits that may have occurred.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | $0.00 | $0.00 | $0.00 | $0.00 | |||||||||
| 2025 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $1.43 | $1.43 |
| 2024 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.41 | $0.41 |
| 2023 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.15 | $0.15 |
| 2022 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.26 | $0.26 |
| 2021 | $0.79 | $0.79 |
Drawdowns
Drawdowns Chart
The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.
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Worst Drawdowns
The table below displays the maximum drawdowns of the T. Rowe Price Mid-Cap Index Fund. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.
The maximum drawdown for the T. Rowe Price Mid-Cap Index Fund was 37.34%, occurring on Oct 14, 2022. Recovery took 505 trading sessions.
The current T. Rowe Price Mid-Cap Index Fund drawdown is 9.51%.
Depth | Start | To Bottom | Bottom | To Recover | End | Total |
|---|---|---|---|---|---|---|
| -37.34% | Nov 17, 2021 | 229 | Oct 14, 2022 | 505 | Oct 18, 2024 | 734 |
| -26.02% | Dec 5, 2024 | 81 | Apr 8, 2025 | 64 | Jul 23, 2025 | 145 |
| -9.51% | Jan 16, 2026 | 49 | Mar 30, 2026 | — | — | — |
| -8.02% | Oct 28, 2025 | 15 | Nov 20, 2025 | 11 | Dec 11, 2025 | 26 |
| -6.21% | Sep 7, 2021 | 20 | Oct 4, 2021 | 11 | Oct 19, 2021 | 31 |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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