FRNKX vs. MVCKX

Last updated Jun 24, 2026

FRNKX (Frank Value Fund) and MVCKX (MFS Mid Cap Value Fund Class R6) are both Mid Cap Value Equities funds. Over the past 10 years, FRNKX returned 7.84%/yr vs 10.06%/yr for MVCKX. A 0.70 correlation means they provide meaningful diversification when combined. FRNKX charges 1.37%/yr vs 0.62%/yr for MVCKX.

Performance

FRNKX vs. MVCKX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Frank Value Fund (FRNKX) and MFS Mid Cap Value Fund Class R6 (MVCKX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FRNKX achieves a 9.96% return, which is significantly lower than MVCKX's 11.10% return. Over the past 10 years, FRNKX has underperformed MVCKX with an annualized return of 7.84%, while MVCKX has yielded a comparatively higher 10.06% annualized return.

FRNKX

• 1D: -1.40%
• 1M: 2.21%
• YTD: 9.96%
• 6M: 9.54%
• 1Y: 16.70%
• 3Y*: 16.84%
• 5Y*: 11.71%
• 10Y*: 7.84%

MVCKX

• 1D: 0.64%
• 1M: 3.18%
• YTD: 11.10%
• 6M: 9.87%
• 1Y: 19.08%
• 3Y*: 11.89%
• 5Y*: 7.62%
• 10Y*: 10.06%

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

FRNKX vs. MVCKX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FRNKX Frank Value Fund	9.96%	12.05%	19.31%	14.88%	4.23%	6.46%	12.84%	4.15%	-2.24%	-2.81%
MVCKX MFS Mid Cap Value Fund Class R6	11.10%	6.47%	6.80%	12.92%	-8.62%	30.93%	4.40%	31.11%	-11.35%	13.83%

Correlation

The correlation between FRNKX and MVCKX is 0.70, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.70
Correlation (3Y) Calculated over the trailing 3-year period	0.76
Correlation (5Y) Calculated over the trailing 5-year period	0.78
Correlation (10Y) Calculated over the trailing 10-year period	0.68
Correlation (All Time) Calculated using the full available price history since Jan 2, 2014	0.70

The correlation between FRNKX and MVCKX shifts across timeframes, from 0.68 (10 years) to 0.78 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

FRNKX vs. MVCKX — Risk / Return Rank

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

FRNKX

FRNKX Risk / Return Rank: 26
FRNKX Sharpe Ratio Rank: 19
FRNKX Sortino Ratio Rank: 19
FRNKX Omega Ratio Rank: 18
FRNKX Calmar Ratio Rank: 45
FRNKX Martin Ratio Rank: 29

MVCKX

MVCKX Risk / Return Rank: 33
MVCKX Sharpe Ratio Rank: 31
MVCKX Sortino Ratio Rank: 33
MVCKX Omega Ratio Rank: 29
MVCKX Calmar Ratio Rank: 36
MVCKX Martin Ratio Rank: 36

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.

FRNKX vs. MVCKX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Frank Value Fund (FRNKX) and MFS Mid Cap Value Fund Class R6 (MVCKX). 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.

	FRNKX	MVCKX	Difference
Sharpe ratio: Return per unit of total volatility	1.15	1.49	-0.34
Sortino ratio: Return per unit of downside risk	1.69	2.22	-0.53
Omega ratio: Gain probability vs. loss probability	1.20	1.26	-0.06
Calmar ratio: Return relative to maximum drawdown	2.47	2.17	+0.31
Martin ratio: Return relative to average drawdown	6.33	7.44	-1.11

FRNKX vs. MVCKX - Sharpe Ratio Comparison

The current FRNKX Sharpe Ratio is 1.15, which is comparable to the MVCKX Sharpe Ratio of 1.49. The chart below compares the historical Sharpe Ratios of FRNKX and MVCKX, 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

FRNKX vs. MVCKX - Drawdown Comparison

The maximum FRNKX drawdown since its inception was -97.09%, which is greater than MVCKX's maximum drawdown of -42.75%. Use the drawdown chart below to compare losses from any high point for FRNKX and MVCKX.

Drawdown Indicators

	FRNKX	MVCKX	Difference
Max Drawdown Largest peak-to-trough decline	-97.09%	-42.75%	-54.34%
Max Drawdown (1Y) Largest decline over 1 year	-6.95%	-9.36%	+2.41%
Max Drawdown (3Y) Largest decline over 3 years	-97.09%	-25.96%	-71.13%
Max Drawdown (5Y) Largest decline over 5 years	-97.09%	-25.96%	-71.13%
Max Drawdown (10Y) Largest decline over 10 years	-97.09%	-42.75%	-54.34%
Current Drawdown Current decline from peak	-95.88%	-0.43%	-95.45%
Average Drawdown Average peak-to-trough decline	-12.21%	-5.25%	-6.96%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.71%	2.72%	-0.01%

Volatility

FRNKX vs. MVCKX - Volatility Comparison

Frank Value Fund (FRNKX) and MFS Mid Cap Value Fund Class R6 (MVCKX) have volatilities of 3.77% and 3.75%, 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

	FRNKX	MVCKX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.77%	3.75%	+0.02%
Volatility (6M) Calculated over the trailing 6-month period	10.74%	9.90%	+0.84%
Volatility (1Y) Calculated over the trailing 1-year period	14.93%	13.62%	+1.31%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1,805.77%	17.53%	+1,788.24%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1,276.86%	19.42%	+1,257.44%

FRNKX vs. MVCKX - Expense Ratio Comparison

FRNKX has a 1.37% expense ratio, which is higher than MVCKX's 0.62% expense ratio.

Dividends

FRNKX vs. MVCKX - Dividend Comparison

FRNKX's dividend yield for the trailing twelve months is around 10.89%, more than MVCKX's 7.44% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FRNKX Frank Value Fund	10.89%	11.98%	4.63%	10.14%	8.10%	4.93%	0.00%	0.23%	3.23%	0.00%	3.00%	7.64%
MVCKX MFS Mid Cap Value Fund Class R6	7.44%	8.27%	3.87%	3.00%	5.44%	5.88%	1.12%	2.32%	6.65%	3.68%	0.06%	4.87%

Frequently Asked Questions

Can I hold both FRNKX and MVCKX in my portfolio?

FRNKX and MVCKX have a correlation of 0.70, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FRNKX or MVCKX?

FRNKX has higher volatility (3.77%) compared to MVCKX (3.75%). In terms of maximum drawdown, FRNKX dropped -97.09% vs MVCKX's -42.75%.

Which has better risk-adjusted returns?

MVCKX currently has the higher Sharpe Ratio (1.49 vs 1.15), 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.