PREIX vs. FSKAX

Last updated Apr 1, 2026

Compare and contrast key facts about T. Rowe Price Equity Index 500 Fund (PREIX) and Fidelity Total Market Index Fund (FSKAX).

PREIX is managed by T. Rowe Price. It was launched on Mar 30, 1990. FSKAX is managed by Fidelity.

Performance

PREIX vs. FSKAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in T. Rowe Price Equity Index 500 Fund (PREIX) and Fidelity Total Market Index Fund (FSKAX). The values are adjusted to include any dividend payments, if applicable.

PREIX vs. FSKAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
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%	21.01%
FSKAX Fidelity Total Market Index Fund	-6.77%	17.06%	23.89%	26.12%	-19.53%	25.66%	20.79%	30.92%	-5.32%	20.85%

Returns By Period

The year-to-date returns for both investments are quite close, with PREIX having a -7.11% return and FSKAX slightly higher at -6.77%. Both investments have delivered pretty close results over the past 10 years, with PREIX having a 13.66% annualized return and FSKAX not far behind at 13.23%.

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%

FSKAX

• 1D: -0.47%
• 1M: -7.69%
• YTD: -6.77%
• 6M: -4.56%
• 1Y: 14.73%
• 3Y*: 16.72%
• 5Y*: 10.13%
• 10Y*: 13.23%

*Multi-year figures are annualized to reflect compound growth (CAGR)

PREIX vs. FSKAX - Expense Ratio Comparison

PREIX has a 0.15% expense ratio, which is higher than FSKAX's 0.02% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

PREIX

T. Rowe Price Equity Index 500 Fund

FSKAX

Fidelity Total Market Index Fund

Return for Risk

PREIX vs. FSKAX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

PREIX

PREIX Risk / Return Rank: 52
PREIX Sharpe Ratio Rank: 48
PREIX Sortino Ratio Rank: 52
PREIX Omega Ratio Rank: 56
PREIX Calmar Ratio Rank: 47
PREIX Martin Ratio Rank: 59

FSKAX

FSKAX Risk / Return Rank: 45
FSKAX Sharpe Ratio Rank: 40
FSKAX Sortino Ratio Rank: 44
FSKAX Omega Ratio Rank: 48
FSKAX Calmar Ratio Rank: 41
FSKAX Martin Ratio Rank: 52

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

PREIX vs. FSKAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price Equity Index 500 Fund (PREIX) and Fidelity Total Market Index Fund (FSKAX). 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.

	PREIX	FSKAX	Difference
Sharpe ratio Return per unit of total volatility	0.91	0.83	+0.08
Sortino ratio Return per unit of downside risk	1.40	1.29	+0.11
Omega ratio Gain probability vs. loss probability	1.22	1.19	+0.02
Calmar ratio Return relative to maximum drawdown	1.16	1.04	+0.12
Martin ratio Return relative to average drawdown	5.66	5.05	+0.62
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PREIX vs. FSKAX - Sharpe Ratio Comparison

The current PREIX Sharpe Ratio is 0.91, which is comparable to the FSKAX Sharpe Ratio of 0.83. The chart below compares the historical Sharpe Ratios of PREIX and FSKAX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	PREIX	FSKAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.91	0.83	+0.08
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.68	0.59	+0.10
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.76	0.72	+0.04
Sharpe Ratio (All Time) Calculated using the full available price history	0.59	0.78	-0.19

Correlation

The correlation between PREIX and FSKAX is 0.99, 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

PREIX vs. FSKAX - Dividend Comparison

PREIX's dividend yield for the trailing twelve months is around 3.97%, more than FSKAX's 1.09% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
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%
FSKAX Fidelity Total Market Index Fund	1.09%	1.01%	1.19%	1.41%	1.62%	1.15%	1.45%	1.94%	2.54%	2.07%	2.43%	0.82%

Drawdowns

PREIX vs. FSKAX - Drawdown Comparison

The maximum PREIX drawdown since its inception was -55.32%, which is greater than FSKAX's maximum drawdown of -35.01%. Use the drawdown chart below to compare losses from any high point for PREIX and FSKAX.

Drawdown Indicators

	PREIX	FSKAX	Difference
Max Drawdown Largest peak-to-trough decline	-55.32%	-35.01%	-20.31%
Max Drawdown (1Y) Largest decline over 1 year	-12.12%	-12.42%	+0.30%
Max Drawdown (5Y) Largest decline over 5 years	-24.60%	-25.39%	+0.79%
Max Drawdown (10Y) Largest decline over 10 years	-33.81%	-35.01%	+1.20%
Current Drawdown Current decline from peak	-8.93%	-8.92%	-0.01%
Average Drawdown Average peak-to-trough decline	-8.76%	-4.05%	-4.71%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.49%	2.57%	-0.08%

Volatility

PREIX vs. FSKAX - Volatility Comparison

T. Rowe Price Equity Index 500 Fund (PREIX) and Fidelity Total Market Index Fund (FSKAX) have volatilities of 4.25% and 4.42%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PREIX	FSKAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.25%	4.42%	-0.17%
Volatility (6M) Calculated over the trailing 6-month period	9.03%	9.40%	-0.37%
Volatility (1Y) Calculated over the trailing 1-year period	18.09%	18.50%	-0.41%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.95%	17.38%	-0.43%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.06%	18.42%	-0.36%