PRDSX vs. RFIMX

Last updated Jun 24, 2026

PRDSX (T. Rowe Price QM U.S. Small-Cap Growth Equity Fund) and RFIMX (Ranger Micro Cap Fund) are both Small Cap Growth Equities funds. Over the past 5 years, PRDSX returned 8.26%/yr vs 3.64%/yr for RFIMX. Their correlation of 0.87 suggests significant overlap in exposure. PRDSX charges 0.78%/yr vs 1.51%/yr for RFIMX.

Performance

PRDSX vs. RFIMX - 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 Ranger Micro Cap Fund (RFIMX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both stocks are quite close, with PRDSX having a 20.65% return and RFIMX slightly lower at 20.52%.

PRDSX

• 1D: 1.60%
• 1M: 7.08%
• YTD: 20.65%
• 6M: 17.62%
• 1Y: 34.46%
• 3Y*: 18.29%
• 5Y*: 8.26%
• 10Y*: 12.69%

RFIMX

• 1D: -0.34%
• 1M: 6.27%
• YTD: 20.52%
• 6M: 16.96%
• 1Y: 30.09%
• 3Y*: 9.23%
• 5Y*: 3.64%
• 10Y*: —

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

PRDSX vs. RFIMX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
PRDSX T. Rowe Price QM U.S. Small-Cap Growth Equity Fund	20.65%	10.10%	12.97%	21.15%	-22.49%	11.15%	23.85%	32.75%	-1.24%
RFIMX Ranger Micro Cap Fund	20.52%	1.99%	11.52%	9.14%	-24.26%	30.58%	44.44%	24.94%	-0.56%

Correlation

The correlation between PRDSX and RFIMX is 0.87, 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	0.87
Correlation (3Y) Calculated over the trailing 3-year period	0.85
Correlation (5Y) Calculated over the trailing 5-year period	0.88
Correlation (All Time) Calculated using the full available price history since Dec 18, 2018	0.87

The correlation between PRDSX and RFIMX has been stable across timeframes, ranging from 0.85 to 0.88 - a consistent structural relationship.

Return for Risk

PRDSX vs. RFIMX — Risk / Return Rank

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

PRDSX

PRDSX Risk / Return Rank: 51
PRDSX Sharpe Ratio Rank: 45
PRDSX Sortino Ratio Rank: 43
PRDSX Omega Ratio Rank: 39
PRDSX Calmar Ratio Rank: 65
PRDSX Martin Ratio Rank: 61

RFIMX

RFIMX Risk / Return Rank: 47
RFIMX Sharpe Ratio Rank: 36
RFIMX Sortino Ratio Rank: 37
RFIMX Omega Ratio Rank: 31
RFIMX Calmar Ratio Rank: 80
RFIMX Martin Ratio Rank: 51

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. RFIMX - 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 Ranger Micro Cap Fund (RFIMX). 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.

	PRDSX	RFIMX	Difference
Sharpe ratio: Return per unit of total volatility	1.82	1.62	+0.19
Sortino ratio: Return per unit of downside risk	2.55	2.37	+0.18
Omega ratio: Gain probability vs. loss probability	1.31	1.27	+0.04
Calmar ratio: Return relative to maximum drawdown	2.97	3.46	-0.49
Martin ratio: Return relative to average drawdown	11.46	9.79	+1.66

PRDSX vs. RFIMX - Sharpe Ratio Comparison

The current PRDSX Sharpe Ratio is 1.82, which is comparable to the RFIMX Sharpe Ratio of 1.62. The chart below compares the historical Sharpe Ratios of PRDSX and RFIMX, 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

PRDSX vs. RFIMX - Drawdown Comparison

The maximum PRDSX drawdown since its inception was -58.95%, smaller than the maximum RFIMX drawdown of -99.41%. Use the drawdown chart below to compare losses from any high point for PRDSX and RFIMX.

Drawdown Indicators

	PRDSX	RFIMX	Difference
Max Drawdown Largest peak-to-trough decline	-58.95%	-99.41%	+40.46%
Max Drawdown (1Y) Largest decline over 1 year	-12.08%	-9.11%	-2.97%
Max Drawdown (3Y) Largest decline over 3 years	-25.84%	-99.41%	+73.57%
Max Drawdown (5Y) Largest decline over 5 years	-33.17%	-99.41%	+66.24%
Max Drawdown (10Y) Largest decline over 10 years	-37.61%	—	—
Current Drawdown Current decline from peak	0.00%	-99.09%	+99.09%
Average Drawdown Average peak-to-trough decline	-14.13%	-29.75%	+15.62%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.13%	3.22%	-0.09%

Volatility

PRDSX vs. RFIMX - Volatility Comparison

T. Rowe Price QM U.S. Small-Cap Growth Equity Fund (PRDSX) has a higher volatility of 7.20% compared to Ranger Micro Cap Fund (RFIMX) at 6.09%. This indicates that PRDSX's price experiences larger fluctuations and is considered to be riskier than RFIMX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PRDSX	RFIMX	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.20%	6.09%	+1.11%
Volatility (6M) Calculated over the trailing 6-month period	15.75%	14.23%	+1.52%
Volatility (1Y) Calculated over the trailing 1-year period	19.82%	19.50%	+0.32%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.54%	5,378.52%	-5,356.98%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.59%	4,389.81%	-4,368.22%

PRDSX vs. RFIMX - Expense Ratio Comparison

PRDSX has a 0.78% expense ratio, which is lower than RFIMX's 1.51% expense ratio.

Dividends

PRDSX vs. RFIMX - Dividend Comparison

PRDSX's dividend yield for the trailing twelve months is around 5.26%, more than RFIMX's 1.10% 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	5.26%	6.35%	7.96%	2.43%	3.72%	13.97%	2.91%	4.12%	4.53%	0.10%	0.02%	1.83%
RFIMX Ranger Micro Cap Fund	1.10%	1.33%	0.00%	0.77%	47.82%	71.79%	0.00%	0.00%	0.36%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both PRDSX and RFIMX in my portfolio?

PRDSX and RFIMX have a correlation of 0.87, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PRDSX or RFIMX?

PRDSX has higher volatility (7.20%) compared to RFIMX (6.09%). In terms of maximum drawdown, PRDSX dropped -58.95% vs RFIMX's -99.41%.

Which has better risk-adjusted returns?

PRDSX currently has the higher Sharpe Ratio (1.82 vs 1.62), 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.