FUMIX vs. FOCKX

Last updated Jul 17, 2026

FUMIX (Fidelity SAI U.S. Momentum Index Fund) and FOCKX (Fidelity OTC Portfolio Class K) are both Large Cap Growth Equities funds from Fidelity. Over the past 5 years, FUMIX returned 16.06%/yr vs 17.68%/yr for FOCKX. Their correlation of 0.85 suggests significant overlap in exposure. FUMIX charges 0.11%/yr vs 0.65%/yr for FOCKX.

Performance

FUMIX vs. FOCKX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity SAI U.S. Momentum Index Fund (FUMIX) and Fidelity OTC Portfolio Class K (FOCKX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with FUMIX having a 25.70% return and FOCKX slightly higher at 26.17%.

FUMIX

• 1D: -1.03%
• 1M: -2.09%
• 6M: 23.17%
• YTD: 25.70%
• 1Y: 31.01%
• 3Y*: 29.98%
• 5Y*: 16.06%
• 10Y*: —

FOCKX

• 1D: 0.70%
• 1M: -1.65%
• 6M: 24.82%
• YTD: 26.17%
• 1Y: 46.81%
• 3Y*: 32.05%
• 5Y*: 17.68%
• 10Y*: 22.41%

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

FUMIX vs. FOCKX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FUMIX Fidelity SAI U.S. Momentum Index Fund	25.70%	17.01%	33.39%	14.67%	-15.79%	22.56%	29.92%	24.16%	-1.41%	22.71%
FOCKX Fidelity OTC Portfolio Class K	26.17%	22.28%	38.91%	42.92%	-32.07%	25.06%	46.83%	39.36%	-3.18%	29.17%

Correlation

The correlation between FUMIX and FOCKX is 0.84, 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	0.84
Correlation (3Y) Calculated over the trailing 3-year period	0.85
Correlation (5Y) Calculated over the trailing 5-year period	0.83
Correlation (All Time) Calculated using the full available price history since Feb 9, 2017	0.85

The correlation between FUMIX and FOCKX has been stable across timeframes, ranging from 0.83 to 0.85 - a consistent structural relationship.

Return for Risk

FUMIX vs. FOCKX — Risk / Return Rank

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

FUMIX

FUMIX Risk / Return Rank: 62
FUMIX Sharpe Ratio Rank: 51
FUMIX Sortino Ratio Rank: 47
FUMIX Omega Ratio Rank: 51
FUMIX Calmar Ratio Rank: 79
FUMIX Martin Ratio Rank: 84

FOCKX

FOCKX Risk / Return Rank: 87
FOCKX Sharpe Ratio Rank: 87
FOCKX Sortino Ratio Rank: 80
FOCKX Omega Ratio Rank: 79
FOCKX Calmar Ratio Rank: 94
FOCKX 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.

FUMIX vs. FOCKX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity SAI U.S. Momentum Index Fund (FUMIX) and Fidelity OTC Portfolio Class K (FOCKX). 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.

	FUMIX	FOCKX	Difference
Sharpe ratio: Return per unit of total volatility	1.60	2.34	-0.74
Sortino ratio: Return per unit of downside risk	2.21	3.01	-0.80
Omega ratio: Gain probability vs. loss probability	1.29	1.39	-0.10
Calmar ratio: Return relative to maximum drawdown	2.89	4.23	-1.33
Martin ratio: Return relative to average drawdown	11.95	16.77	-4.81

FUMIX vs. FOCKX - Sharpe Ratio Comparison

The current FUMIX Sharpe Ratio is 1.60, which is lower than the FOCKX Sharpe Ratio of 2.34. The chart below compares the historical Sharpe Ratios of FUMIX and FOCKX, 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

FUMIX vs. FOCKX - Drawdown Comparison

The maximum FUMIX drawdown since its inception was -33.36%, smaller than the maximum FOCKX drawdown of -53.33%. Use the drawdown chart below to compare losses from any high point for FUMIX and FOCKX.

Drawdown Indicators

	FUMIX	FOCKX	Difference
Max Drawdown Largest peak-to-trough decline	-33.36%	-53.33%	+19.97%
Max Drawdown (1Y) Largest decline over 1 year	-10.99%	-11.28%	+0.29%
Max Drawdown (3Y) Largest decline over 3 years	-19.90%	-24.83%	+4.93%
Max Drawdown (5Y) Largest decline over 5 years	-27.66%	-36.97%	+9.31%
Max Drawdown (10Y) Largest decline over 10 years	—	-36.97%	—
Current Drawdown Current decline from peak	-5.27%	-2.72%	-2.55%
Average Drawdown Average peak-to-trough decline	-6.27%	-8.35%	+2.08%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.65%	2.83%	-0.18%

Volatility

FUMIX vs. FOCKX - Volatility Comparison

Fidelity SAI U.S. Momentum Index Fund (FUMIX) has a higher volatility of 8.83% compared to Fidelity OTC Portfolio Class K (FOCKX) at 8.14%. This indicates that FUMIX's price experiences larger fluctuations and is considered to be riskier than FOCKX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FUMIX	FOCKX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.83%	8.14%	+0.69%
Volatility (6M) Calculated over the trailing 6-month period	17.68%	16.81%	+0.87%
Volatility (1Y) Calculated over the trailing 1-year period	19.85%	20.35%	-0.50%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.63%	23.11%	-1.48%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.91%	22.57%	-0.66%

FUMIX vs. FOCKX - Expense Ratio Comparison

FUMIX has a 0.11% expense ratio, which is lower than FOCKX's 0.65% expense ratio.

Dividends

FUMIX vs. FOCKX - Dividend Comparison

FUMIX's dividend yield for the trailing twelve months is around 2.21%, less than FOCKX's 5.99% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FOCKX Fidelity OTC Portfolio Class K	5.99%	7.56%	16.42%	0.09%	3.97%	11.34%	6.18%	7.49%	7.81%	4.85%	3.25%	5.42%
FUMIX Fidelity SAI U.S. Momentum Index Fund	2.21%	2.77%	5.89%	18.09%	2.10%	20.67%	8.68%	2.09%	3.84%	0.88%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FUMIX and FOCKX in my portfolio?

FUMIX and FOCKX have a correlation of 0.84, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FUMIX or FOCKX?

FUMIX has higher volatility (8.83%) compared to FOCKX (8.14%). In terms of maximum drawdown, FUMIX dropped -33.36% vs FOCKX's -53.33%.

Which has better risk-adjusted returns?

FOCKX currently has the higher Sharpe Ratio (2.34 vs 1.60), 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.