THISX vs. PREIX
Compare and contrast key facts about T. Rowe Price Health Sciences Fund Class I (THISX) and T. Rowe Price Equity Index 500 Fund (PREIX).
THISX is an actively managed fund by T. Rowe Price. It was launched on Dec 29, 1995. PREIX is managed by T. Rowe Price. It was launched on Mar 30, 1990.
Performance
THISX vs. PREIX - Performance Comparison
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THISX vs. PREIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
THISX T. Rowe Price Health Sciences Fund Class I | -9.61% | 17.92% | 16.75% | 3.17% | -12.11% | 13.62% | 30.35% | 38.29% | 1.20% | 26.96% |
PREIX T. Rowe Price Equity Index 500 Fund | -7.11% | 19.24% | 24.78% | 26.07% | -18.27% | 28.48% | 18.17% | 31.47% | -4.59% | 20.00% |
Returns By Period
In the year-to-date period, THISX achieves a -9.61% return, which is significantly lower than PREIX's -7.11% return.
THISX
- 1D
- 0.37%
- 1M
- -9.32%
- YTD
- -9.61%
- 6M
- 4.41%
- 1Y
- 6.58%
- 3Y*
- 9.52%
- 5Y*
- 5.15%
- 10Y*
- —
PREIX
- 1D
- -0.39%
- 1M
- -7.70%
- YTD
- -7.11%
- 6M
- -3.40%
- 1Y
- 15.76%
- 3Y*
- 17.48%
- 5Y*
- 11.51%
- 10Y*
- 13.66%
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THISX vs. PREIX - Expense Ratio Comparison
THISX has a 0.67% expense ratio, which is higher than PREIX's 0.15% expense ratio.
Return for Risk
THISX vs. PREIX — Risk / Return Rank
THISX
PREIX
THISX vs. PREIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price Health Sciences Fund Class I (THISX) and T. Rowe Price Equity Index 500 Fund (PREIX). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
| THISX | PREIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.33 | 0.91 | -0.58 |
Sortino ratioReturn per unit of downside risk | 0.58 | 1.40 | -0.81 |
Omega ratioGain probability vs. loss probability | 1.07 | 1.22 | -0.14 |
Calmar ratioReturn relative to maximum drawdown | 0.42 | 1.16 | -0.74 |
Martin ratioReturn relative to average drawdown | 1.23 | 5.66 | -4.43 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| THISX | PREIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.33 | 0.91 | -0.58 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.28 | 0.68 | -0.40 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.76 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.63 | 0.59 | +0.04 |
Correlation
The correlation between THISX and PREIX is 0.71, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
THISX vs. PREIX - Dividend Comparison
THISX's dividend yield for the trailing twelve months is around 13.56%, more than PREIX's 3.97% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
THISX T. Rowe Price Health Sciences Fund Class I | 13.56% | 12.25% | 26.10% | 5.20% | 1.76% | 7.62% | 7.25% | 12.58% | 6.70% | 7.55% | 0.00% | 0.00% |
PREIX T. Rowe Price Equity Index 500 Fund | 3.97% | 3.66% | 1.17% | 1.32% | 1.50% | 1.56% | 1.97% | 2.13% | 2.60% | 1.30% | 2.03% | 2.02% |
Drawdowns
THISX vs. PREIX - Drawdown Comparison
The maximum THISX drawdown since its inception was -28.97%, smaller than the maximum PREIX drawdown of -55.32%. Use the drawdown chart below to compare losses from any high point for THISX and PREIX.
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Drawdown Indicators
| THISX | PREIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -28.97% | -55.32% | +26.35% |
Max Drawdown (1Y)Largest decline over 1 year | -12.78% | -12.12% | -0.66% |
Max Drawdown (5Y)Largest decline over 5 years | -27.53% | -24.60% | -2.93% |
Max Drawdown (10Y)Largest decline over 10 years | — | -33.81% | — |
Current DrawdownCurrent decline from peak | -12.46% | -8.93% | -3.53% |
Average DrawdownAverage peak-to-trough decline | -7.18% | -8.76% | +1.58% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.37% | 2.49% | +1.88% |
Volatility
THISX vs. PREIX - Volatility Comparison
T. Rowe Price Health Sciences Fund Class I (THISX) has a higher volatility of 5.30% compared to T. Rowe Price Equity Index 500 Fund (PREIX) at 4.25%. This indicates that THISX's price experiences larger fluctuations and is considered to be riskier than PREIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| THISX | PREIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.30% | 4.25% | +1.05% |
Volatility (6M)Calculated over the trailing 6-month period | 10.70% | 9.03% | +1.67% |
Volatility (1Y)Calculated over the trailing 1-year period | 18.41% | 18.09% | +0.32% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 18.29% | 16.95% | +1.34% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 19.99% | 18.06% | +1.93% |