RYPRX vs. WEMMX

Last updated Jun 4, 2026

RYPRX (Royce Premier Fund) and WEMMX (TETON Westwood Mighty Mites Fund) are both Small Cap Blend Equities funds. Over the past 10 years, RYPRX returned 11.04%/yr vs 9.29%/yr for WEMMX. Their correlation of 0.84 suggests significant overlap in exposure. RYPRX charges 1.17%/yr vs 1.41%/yr for WEMMX.

Performance

RYPRX vs. WEMMX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Royce Premier Fund (RYPRX) and TETON Westwood Mighty Mites Fund (WEMMX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RYPRX achieves a 15.73% return, which is significantly lower than WEMMX's 21.19% return. Over the past 10 years, RYPRX has outperformed WEMMX with an annualized return of 11.04%, while WEMMX has yielded a comparatively lower 9.29% annualized return.

RYPRX

• 1D: 0.68%
• 1M: 3.20%
• YTD: 15.73%
• 6M: 15.18%
• 1Y: 26.55%
• 3Y*: 12.24%
• 5Y*: 6.50%
• 10Y*: 11.04%

WEMMX

• 1D: 0.87%
• 1M: 5.74%
• YTD: 21.19%
• 6M: 22.91%
• 1Y: 37.84%
• 3Y*: 15.60%
• 5Y*: 5.64%
• 10Y*: 9.29%

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

RYPRX vs. WEMMX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RYPRX Royce Premier Fund	15.73%	5.74%	2.91%	22.76%	-15.67%	16.07%	11.51%	34.45%	-10.65%	23.47%
WEMMX TETON Westwood Mighty Mites Fund	21.19%	11.02%	3.83%	13.53%	-15.37%	21.44%	10.02%	16.94%	-13.69%	15.47%

Correlation

The correlation between RYPRX and WEMMX is 0.86, 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	0.86
Correlation (3Y) Calculated over the trailing 3-year period	0.88
Correlation (5Y) Calculated over the trailing 5-year period	0.90
Correlation (10Y) Calculated over the trailing 10-year period	0.90
Correlation (All Time) Calculated using the full available price history since May 12, 1998	0.84

The correlation between RYPRX and WEMMX has been stable across timeframes, ranging from 0.84 to 0.90 - a consistent structural relationship.

Return for Risk

RYPRX vs. WEMMX — Risk / Return Rank

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

RYPRX

RYPRX Risk / Return Rank: 29
RYPRX Sharpe Ratio Rank: 31
RYPRX Sortino Ratio Rank: 34
RYPRX Omega Ratio Rank: 27
RYPRX Calmar Ratio Rank: 28
RYPRX Martin Ratio Rank: 27

WEMMX

WEMMX Risk / Return Rank: 65
WEMMX Sharpe Ratio Rank: 59
WEMMX Sortino Ratio Rank: 60
WEMMX Omega Ratio Rank: 49
WEMMX Calmar Ratio Rank: 88
WEMMX Martin Ratio Rank: 69

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.

RYPRX vs. WEMMX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Royce Premier Fund (RYPRX) and TETON Westwood Mighty Mites Fund (WEMMX). 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.

	RYPRX	WEMMX	Difference
Sharpe ratio: Return per unit of total volatility	1.58	2.28	-0.70
Sortino ratio: Return per unit of downside risk	2.41	3.25	-0.84
Omega ratio: Gain probability vs. loss probability	1.27	1.38	-0.11
Calmar ratio: Return relative to maximum drawdown	1.99	4.31	-2.32
Martin ratio: Return relative to average drawdown	6.41	13.24	-6.84
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RYPRX vs. WEMMX - Sharpe Ratio Comparison

The current RYPRX Sharpe Ratio is 1.58, which is lower than the WEMMX Sharpe Ratio of 2.28. The chart below compares the historical Sharpe Ratios of RYPRX and WEMMX, 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

	RYPRX	WEMMX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.58	2.28	-0.70
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.33	0.30	+0.03
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.52	0.46	+0.06
Sharpe Ratio (All Time) Calculated using the full available price history	0.60	0.64	-0.04

Drawdowns

RYPRX vs. WEMMX - Drawdown Comparison

The maximum RYPRX drawdown since its inception was -51.47%, which is greater than WEMMX's maximum drawdown of -42.48%. Use the drawdown chart below to compare losses from any high point for RYPRX and WEMMX.

Drawdown Indicators

	RYPRX	WEMMX	Difference
Max Drawdown Largest peak-to-trough decline	-51.47%	-42.48%	-8.99%
Max Drawdown (1Y) Largest decline over 1 year	-14.54%	-9.31%	-5.23%
Max Drawdown (3Y) Largest decline over 3 years	-26.14%	-21.44%	-4.70%
Max Drawdown (5Y) Largest decline over 5 years	-26.14%	-27.11%	+0.97%
Max Drawdown (10Y) Largest decline over 10 years	-40.30%	-41.73%	+1.43%
Current Drawdown Current decline from peak	-2.61%	0.00%	-2.61%
Average Drawdown Average peak-to-trough decline	-6.27%	-6.62%	+0.35%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.50%	3.02%	+1.48%

Volatility

RYPRX vs. WEMMX - Volatility Comparison

Royce Premier Fund (RYPRX) and TETON Westwood Mighty Mites Fund (WEMMX) have volatilities of 5.29% and 5.22%, 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

	RYPRX	WEMMX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.29%	5.22%	+0.07%
Volatility (6M) Calculated over the trailing 6-month period	13.63%	12.44%	+1.19%
Volatility (1Y) Calculated over the trailing 1-year period	18.29%	17.64%	+0.65%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.91%	18.92%	+0.99%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.30%	20.45%	+0.85%

RYPRX vs. WEMMX - Expense Ratio Comparison

RYPRX has a 1.17% expense ratio, which is lower than WEMMX's 1.41% expense ratio.

Dividends

RYPRX vs. WEMMX - Dividend Comparison

RYPRX's dividend yield for the trailing twelve months is around 10.41%, less than WEMMX's 18.82% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RYPRX Royce Premier Fund	10.41%	12.05%	9.52%	6.89%	9.00%	21.23%	5.55%	20.68%	29.26%	15.18%	13.42%	24.26%
WEMMX TETON Westwood Mighty Mites Fund	18.82%	22.80%	26.79%	18.86%	13.60%	15.44%	9.23%	4.11%	4.16%	6.44%	4.61%	2.35%

Frequently Asked Questions

Can I hold both RYPRX and WEMMX in my portfolio?

RYPRX and WEMMX have a correlation of 0.86, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RYPRX or WEMMX?

RYPRX has higher volatility (5.29%) compared to WEMMX (5.22%). In terms of maximum drawdown, RYPRX dropped -51.47% vs WEMMX's -42.48%.

Which has better risk-adjusted returns?

WEMMX currently has the higher Sharpe Ratio (2.28 vs 1.58), 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.