PRDSX vs. TMSL

Last updated Jun 4, 2026

PRDSX (T. Rowe Price QM U.S. Small-Cap Growth Equity Fund) and TMSL (T. Rowe Price Small-Mid Cap ETF) are both funds - PRDSX is a Small Cap Growth Equities fund managed by T. Rowe Price, while TMSL is a Mid Cap Blend Equities fund actively managed by T. Rowe Price. Over the past year, PRDSX returned 28.98% vs 31.37% for TMSL. Their correlation of 0.94 suggests significant overlap in exposure. PRDSX charges 0.78%/yr vs 0.55%/yr for TMSL.

Performance

PRDSX vs. TMSL - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in T. Rowe Price QM U.S. Small-Cap Growth Equity Fund (PRDSX) and T. Rowe Price Small-Mid Cap ETF (TMSL). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PRDSX achieves a 14.76% return, which is significantly lower than TMSL's 16.49% return.

PRDSX

• 1D: 0.93%
• 1M: 3.81%
• YTD: 14.76%
• 6M: 13.56%
• 1Y: 28.98%
• 3Y*: 16.49%
• 5Y*: 7.58%
• 10Y*: 11.71%

TMSL

• 1D: 0.02%
• 1M: 3.85%
• YTD: 16.49%
• 6M: 16.75%
• 1Y: 31.37%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

PRDSX vs. TMSL - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
PRDSX T. Rowe Price QM U.S. Small-Cap Growth Equity Fund	14.76%	10.10%	12.97%	7.78%
TMSL T. Rowe Price Small-Mid Cap ETF	16.49%	11.95%	15.81%	11.22%

Correlation

The correlation between PRDSX and TMSL is 0.93, 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	0.93
Correlation (All Time) Calculated using the full available price history since Jun 16, 2023	0.94

The correlation between PRDSX and TMSL has been stable across timeframes, ranging from 0.93 to 0.94 - a consistent structural relationship.

Return for Risk

PRDSX vs. TMSL — Risk / Return Rank

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

PRDSX

PRDSX Risk / Return Rank: 37
PRDSX Sharpe Ratio Rank: 32
PRDSX Sortino Ratio Rank: 32
PRDSX Omega Ratio Rank: 30
PRDSX Calmar Ratio Rank: 45
PRDSX Martin Ratio Rank: 48

TMSL

TMSL Risk / Return Rank: 56
TMSL Sharpe Ratio Rank: 53
TMSL Sortino Ratio Rank: 55
TMSL Omega Ratio Rank: 53
TMSL Calmar Ratio Rank: 57
TMSL Martin Ratio Rank: 64

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.

PRDSX vs. TMSL - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price QM U.S. Small-Cap Growth Equity Fund (PRDSX) and T. Rowe Price Small-Mid Cap ETF (TMSL). 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.

	PRDSX	TMSL	Difference
Sharpe ratio: Return per unit of total volatility	1.64	1.83	-0.19
Sortino ratio: Return per unit of downside risk	2.35	2.63	-0.28
Omega ratio: Gain probability vs. loss probability	1.28	1.33	-0.04
Calmar ratio: Return relative to maximum drawdown	2.55	2.82	-0.27
Martin ratio: Return relative to average drawdown	9.89	11.55	-1.66
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PRDSX vs. TMSL - Sharpe Ratio Comparison

The current PRDSX Sharpe Ratio is 1.64, which is comparable to the TMSL Sharpe Ratio of 1.83. The chart below compares the historical Sharpe Ratios of PRDSX and TMSL, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	PRDSX	TMSL	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.64	1.83	-0.19
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.36	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.55	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.37	1.05	-0.67

Drawdowns

PRDSX vs. TMSL - Drawdown Comparison

The maximum PRDSX drawdown since its inception was -58.95%, which is greater than TMSL's maximum drawdown of -24.39%. Use the drawdown chart below to compare losses from any high point for PRDSX and TMSL.

Drawdown Indicators

	PRDSX	TMSL	Difference
Max Drawdown Largest peak-to-trough decline	-58.95%	-24.39%	-34.56%
Max Drawdown (1Y) Largest decline over 1 year	-12.08%	-11.19%	-0.89%
Max Drawdown (3Y) Largest decline over 3 years	-25.84%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-33.17%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-37.61%	—	—
Current Drawdown Current decline from peak	-0.33%	-0.50%	+0.17%
Average Drawdown Average peak-to-trough decline	-14.16%	-3.94%	-10.22%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.11%	2.72%	+0.39%

Volatility

PRDSX vs. TMSL - Volatility Comparison

T. Rowe Price QM U.S. Small-Cap Growth Equity Fund (PRDSX) has a higher volatility of 6.03% compared to T. Rowe Price Small-Mid Cap ETF (TMSL) at 5.40%. This indicates that PRDSX's price experiences larger fluctuations and is considered to be riskier than TMSL based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PRDSX	TMSL	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.03%	5.40%	+0.63%
Volatility (6M) Calculated over the trailing 6-month period	14.75%	13.66%	+1.09%
Volatility (1Y) Calculated over the trailing 1-year period	18.82%	17.27%	+1.55%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.37%	18.39%	+2.98%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.51%	18.39%	+3.12%

PRDSX vs. TMSL - Expense Ratio Comparison

PRDSX has a 0.78% expense ratio, which is higher than TMSL's 0.55% expense ratio.

Dividends

PRDSX vs. TMSL - Dividend Comparison

PRDSX's dividend yield for the trailing twelve months is around 5.53%, more than TMSL's 0.49% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PRDSX T. Rowe Price QM U.S. Small-Cap Growth Equity Fund	5.53%	6.35%	7.96%	2.43%	3.72%	13.97%	2.91%	4.12%	4.53%	0.10%	0.02%	1.83%
TMSL T. Rowe Price Small-Mid Cap ETF	0.49%	0.57%	0.44%	0.34%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both PRDSX and TMSL in my portfolio?

With a correlation of 0.93, PRDSX and TMSL move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, PRDSX or TMSL?

PRDSX has higher volatility (6.03%) compared to TMSL (5.40%). In terms of maximum drawdown, PRDSX dropped -58.95% vs TMSL's -24.39%.

Which has better risk-adjusted returns?

TMSL currently has the higher Sharpe Ratio (1.83 vs 1.64), 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.