TRBCX vs. PREIX

Last updated Jun 25, 2026

TRBCX (T. Rowe Price Blue Chip Growth Fund) and PREIX (T. Rowe Price Equity Index 500 Fund) are both mutual funds - TRBCX is a Large Cap Growth Equities fund actively managed by T. Rowe Price, while PREIX is a Large Cap Blend Equities fund tracking the S&P 500 Index. TRBCX is actively managed, while PREIX is passively managed. Over the past 10 years, TRBCX returned 17.46%/yr vs 15.39%/yr for PREIX. Their correlation of 0.93 suggests significant overlap in exposure. TRBCX charges 0.69%/yr vs 0.15%/yr for PREIX.

Performance

TRBCX vs. PREIX - Performance Comparison

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

Returns By Period

In the year-to-date period, TRBCX achieves a -1.78% return, which is significantly lower than PREIX's 8.10% return. Over the past 10 years, TRBCX has outperformed PREIX with an annualized return of 17.46%, while PREIX has yielded a comparatively lower 15.39% annualized return.

TRBCX

• 1D: -1.96%
• 1M: -5.16%
• YTD: -1.78%
• 6M: -3.09%
• 1Y: 11.36%
• 3Y*: 25.03%
• 5Y*: 10.76%
• 10Y*: 17.46%

PREIX

• 1D: -1.44%
• 1M: -1.35%
• YTD: 8.10%
• 6M: 6.77%
• 1Y: 22.12%
• 3Y*: 20.59%
• 5Y*: 12.94%
• 10Y*: 15.39%

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

TRBCX vs. PREIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
TRBCX T. Rowe Price Blue Chip Growth Fund	-1.78%	18.78%	48.46%	49.42%	-38.57%	17.54%	34.73%	29.97%	2.00%	36.54%
PREIX T. Rowe Price Equity Index 500 Fund	8.10%	17.66%	24.78%	26.07%	-18.27%	28.48%	18.17%	31.47%	-4.59%	21.01%

Correlation

The correlation between TRBCX and PREIX is 0.84, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.84
Correlation (3Y) Calculated over the trailing 3-year period	0.88
Correlation (5Y) Calculated over the trailing 5-year period	0.91
Correlation (10Y) Calculated over the trailing 10-year period	0.90
Correlation (All Time) Calculated using the full available price history since Jun 30, 1993	0.93

The correlation between TRBCX and PREIX has been stable across timeframes, ranging from 0.84 to 0.93 - a consistent structural relationship.

Return for Risk

TRBCX vs. PREIX — Risk / Return Rank

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

TRBCX

TRBCX Risk / Return Rank: 9
TRBCX Sharpe Ratio Rank: 10
TRBCX Sortino Ratio Rank: 9
TRBCX Omega Ratio Rank: 10
TRBCX Calmar Ratio Rank: 9
TRBCX Martin Ratio Rank: 10

PREIX

PREIX Risk / Return Rank: 51
PREIX Sharpe Ratio Rank: 48
PREIX Sortino Ratio Rank: 44
PREIX Omega Ratio Rank: 46
PREIX Calmar Ratio Rank: 52
PREIX Martin Ratio Rank: 65

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.

TRBCX vs. PREIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price Blue Chip Growth Fund (TRBCX) 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	TRBCX	PREIX	Difference
Sharpe ratio: Return per unit of total volatility	0.74	1.88	-1.14
Sortino ratio: Return per unit of downside risk	1.08	2.56	-1.48
Omega ratio: Gain probability vs. loss probability	1.14	1.34	-0.20
Calmar ratio: Return relative to maximum drawdown	0.77	2.64	-1.87
Martin ratio: Return relative to average drawdown	2.52	11.84	-9.32

TRBCX vs. PREIX - Sharpe Ratio Comparison

The current TRBCX Sharpe Ratio is 0.74, which is lower than the PREIX Sharpe Ratio of 1.88. The chart below compares the historical Sharpe Ratios of TRBCX and PREIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

TRBCX vs. PREIX - Drawdown Comparison

The maximum TRBCX drawdown since its inception was -54.56%, roughly equal to the maximum PREIX drawdown of -55.32%. Use the drawdown chart below to compare losses from any high point for TRBCX and PREIX.

Drawdown Indicators

	TRBCX	PREIX	Difference
Max Drawdown Largest peak-to-trough decline	-54.56%	-55.32%	+0.76%
Max Drawdown (1Y) Largest decline over 1 year	-17.01%	-8.93%	-8.08%
Max Drawdown (3Y) Largest decline over 3 years	-23.08%	-18.78%	-4.30%
Max Drawdown (5Y) Largest decline over 5 years	-43.63%	-24.60%	-19.03%
Max Drawdown (10Y) Largest decline over 10 years	-43.63%	-33.81%	-9.82%
Current Drawdown Current decline from peak	-7.52%	-3.14%	-4.38%
Average Drawdown Average peak-to-trough decline	-11.29%	-8.71%	-2.58%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.16%	1.99%	+3.17%

Volatility

TRBCX vs. PREIX - Volatility Comparison

T. Rowe Price Blue Chip Growth Fund (TRBCX) has a higher volatility of 6.71% compared to T. Rowe Price Equity Index 500 Fund (PREIX) at 4.90%. This indicates that TRBCX'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.

Volatility by Period

	TRBCX	PREIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.71%	4.90%	+1.81%
Volatility (6M) Calculated over the trailing 6-month period	14.55%	9.94%	+4.61%
Volatility (1Y) Calculated over the trailing 1-year period	17.70%	12.58%	+5.12%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.17%	17.10%	+7.07%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.84%	18.12%	+4.72%

TRBCX vs. PREIX - Expense Ratio Comparison

TRBCX has a 0.69% expense ratio, which is higher than PREIX's 0.15% expense ratio.

Dividends

TRBCX vs. PREIX - Dividend Comparison

TRBCX's dividend yield for the trailing twelve months is around 5.34%, more than PREIX's 2.17% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PREIX T. Rowe Price Equity Index 500 Fund	2.17%	2.32%	1.17%	1.32%	1.50%	1.56%	1.97%	2.13%	2.60%	1.30%	2.03%	2.02%
TRBCX T. Rowe Price Blue Chip Growth Fund	5.34%	5.25%	18.16%	3.49%	5.87%	9.38%	1.19%	0.36%	2.44%	2.94%	0.67%	3.26%

Frequently Asked Questions

Can I hold both TRBCX and PREIX in my portfolio?

TRBCX and PREIX have a correlation of 0.84, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, TRBCX or PREIX?

TRBCX has higher volatility (6.71%) compared to PREIX (4.90%). In terms of maximum drawdown, TRBCX dropped -54.56% vs PREIX's -55.32%.

Which has better risk-adjusted returns?

PREIX currently has the higher Sharpe Ratio (1.88 vs 0.74), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.