FKICX vs. MOPIX

Last updated Jun 4, 2026

FKICX (Fidelity Small Cap Stock K6 Fund) and MOPIX (MainStay WMC Small Companies Fund) are both Small Cap Blend Equities funds. Over the past 5 years, FKICX returned 7.61%/yr vs 9.07%/yr for MOPIX. Their correlation of 0.93 suggests significant overlap in exposure. FKICX charges 0.60%/yr vs 0.97%/yr for MOPIX.

Performance

FKICX vs. MOPIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Small Cap Stock K6 Fund (FKICX) and MainStay WMC Small Companies Fund (MOPIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FKICX achieves a 16.78% return, which is significantly lower than MOPIX's 27.70% return.

FKICX

• 1D: 1.21%
• 1M: 5.86%
• YTD: 16.78%
• 6M: 16.02%
• 1Y: 34.05%
• 3Y*: 19.51%
• 5Y*: 7.61%
• 10Y*: —

MOPIX

• 1D: 0.76%
• 1M: 9.92%
• YTD: 27.70%
• 6M: 27.77%
• 1Y: 56.29%
• 3Y*: 23.19%
• 5Y*: 9.07%
• 10Y*: 9.35%

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

FKICX vs. MOPIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FKICX Fidelity Small Cap Stock K6 Fund	16.78%	16.09%	8.86%	19.94%	-21.61%	21.00%	14.68%	29.83%	-12.07%	11.23%
MOPIX MainStay WMC Small Companies Fund	27.70%	12.69%	16.07%	10.97%	-19.00%	17.55%	10.04%	17.70%	-16.42%	10.76%

Correlation

The correlation between FKICX and MOPIX is 0.91, 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	0.91
Correlation (3Y) Calculated over the trailing 3-year period	0.91
Correlation (5Y) Calculated over the trailing 5-year period	0.93
Correlation (All Time) Calculated using the full available price history since May 26, 2017	0.93

The correlation between FKICX and MOPIX has been stable across timeframes, ranging from 0.91 to 0.93 - a consistent structural relationship.

Return for Risk

FKICX vs. MOPIX — Risk / Return Rank

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

FKICX

FKICX Risk / Return Rank: 47
FKICX Sharpe Ratio Rank: 44
FKICX Sortino Ratio Rank: 45
FKICX Omega Ratio Rank: 39
FKICX Calmar Ratio Rank: 58
FKICX Martin Ratio Rank: 50

MOPIX

MOPIX Risk / Return Rank: 91
MOPIX Sharpe Ratio Rank: 93
MOPIX Sortino Ratio Rank: 89
MOPIX Omega Ratio Rank: 80
MOPIX Calmar Ratio Rank: 96
MOPIX Martin Ratio Rank: 95

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.

FKICX vs. MOPIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Small Cap Stock K6 Fund (FKICX) and MainStay WMC Small Companies Fund (MOPIX). 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.

	FKICX	MOPIX	Difference
Sharpe ratio: Return per unit of total volatility	1.95	3.20	-1.25
Sortino ratio: Return per unit of downside risk	2.81	4.37	-1.55
Omega ratio: Gain probability vs. loss probability	1.33	1.53	-0.19
Calmar ratio: Return relative to maximum drawdown	2.91	6.08	-3.17
Martin ratio: Return relative to average drawdown	10.31	22.94	-12.63
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FKICX vs. MOPIX - Sharpe Ratio Comparison

The current FKICX Sharpe Ratio is 1.95, which is lower than the MOPIX Sharpe Ratio of 3.20. The chart below compares the historical Sharpe Ratios of FKICX and MOPIX, 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

	FKICX	MOPIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.95	3.20	-1.25
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.15	0.40	-0.25
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.40	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.25	0.49	-0.23

Drawdowns

FKICX vs. MOPIX - Drawdown Comparison

The maximum FKICX drawdown since its inception was -58.55%, smaller than the maximum MOPIX drawdown of -68.08%. Use the drawdown chart below to compare losses from any high point for FKICX and MOPIX.

Drawdown Indicators

	FKICX	MOPIX	Difference
Max Drawdown Largest peak-to-trough decline	-58.55%	-68.08%	+9.53%
Max Drawdown (1Y) Largest decline over 1 year	-12.42%	-9.84%	-2.58%
Max Drawdown (3Y) Largest decline over 3 years	-58.55%	-26.99%	-31.56%
Max Drawdown (5Y) Largest decline over 5 years	-58.55%	-32.60%	-25.95%
Max Drawdown (10Y) Largest decline over 10 years	—	-48.01%	—
Current Drawdown Current decline from peak	-33.67%	0.00%	-33.67%
Average Drawdown Average peak-to-trough decline	-15.16%	-9.11%	-6.05%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.49%	2.60%	+0.89%

Volatility

FKICX vs. MOPIX - Volatility Comparison

Fidelity Small Cap Stock K6 Fund (FKICX) and MainStay WMC Small Companies Fund (MOPIX) have volatilities of 6.07% and 5.92%, 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

	FKICX	MOPIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.07%	5.92%	+0.15%
Volatility (6M) Calculated over the trailing 6-month period	13.86%	13.71%	+0.15%
Volatility (1Y) Calculated over the trailing 1-year period	18.49%	18.68%	-0.19%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	51.33%	22.81%	+28.52%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	41.18%	23.38%	+17.80%

FKICX vs. MOPIX - Expense Ratio Comparison

FKICX has a 0.60% expense ratio, which is lower than MOPIX's 0.97% expense ratio.

Dividends

FKICX vs. MOPIX - Dividend Comparison

FKICX's dividend yield for the trailing twelve months is around 20.24%, more than MOPIX's 0.12% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FKICX Fidelity Small Cap Stock K6 Fund	20.24%	23.64%	106.70%	0.16%	9.77%	24.10%	0.27%	0.81%	5.50%	0.56%	0.00%	0.00%
MOPIX MainStay WMC Small Companies Fund	0.12%	0.15%	0.39%	0.33%	2.34%	29.42%	0.00%	0.50%	18.09%	8.32%	0.59%	0.37%

Frequently Asked Questions

Can I hold both FKICX and MOPIX in my portfolio?

With a correlation of 0.91, FKICX and MOPIX 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, FKICX or MOPIX?

FKICX has higher volatility (6.07%) compared to MOPIX (5.92%). In terms of maximum drawdown, FKICX dropped -58.55% vs MOPIX's -68.08%.

Which has better risk-adjusted returns?

MOPIX currently has the higher Sharpe Ratio (3.20 vs 1.95), 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.