FOCKX vs. FZROX

Last updated Jun 23, 2026

FOCKX (Fidelity OTC Portfolio Class K) and FZROX (Fidelity ZERO Total Market Index Fund) are both mutual funds - FOCKX is a Large Cap Growth Equities fund managed by Fidelity, while FZROX is a Large Cap Blend Equities fund managed by Fidelity. Over the past 5 years, FOCKX returned 19.05%/yr vs 13.13%/yr for FZROX. Their correlation of 0.90 suggests significant overlap in exposure. FOCKX charges 0.73%/yr vs 0.00%/yr for FZROX.

Performance

FOCKX vs. FZROX - Performance Comparison

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

Returns By Period

In the year-to-date period, FOCKX achieves a 29.57% return, which is significantly higher than FZROX's 10.74% return.

FOCKX

• 1D: 2.02%
• 1M: 5.85%
• YTD: 29.57%
• 6M: 29.94%
• 1Y: 60.92%
• 3Y*: 34.63%
• 5Y*: 19.05%
• 10Y*: 23.26%

FZROX

• 1D: 1.16%
• 1M: 0.93%
• YTD: 10.74%
• 6M: 10.00%
• 1Y: 27.63%
• 3Y*: 20.80%
• 5Y*: 13.13%
• 10Y*: —

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

FOCKX vs. FZROX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
FOCKX Fidelity OTC Portfolio Class K	29.57%	22.28%	38.91%	42.92%	-32.07%	25.06%	46.83%	39.36%	-16.62%
FZROX Fidelity ZERO Total Market Index Fund	10.74%	17.23%	23.94%	26.20%	-19.21%	26.00%	20.51%	31.15%	-12.72%

Correlation

The correlation between FOCKX and FZROX 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	0.86
Correlation (5Y) Calculated over the trailing 5-year period	0.90
Correlation (All Time) Calculated using the full available price history since Aug 16, 2018	0.90

The correlation between FOCKX and FZROX has been stable across timeframes, ranging from 0.86 to 0.90 - a consistent structural relationship.

Return for Risk

FOCKX vs. FZROX — Risk / Return Rank

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

FOCKX

FOCKX Risk / Return Rank: 92
FOCKX Sharpe Ratio Rank: 96
FOCKX Sortino Ratio Rank: 87
FOCKX Omega Ratio Rank: 84
FOCKX Calmar Ratio Rank: 95
FOCKX Martin Ratio Rank: 97

FZROX

FZROX Risk / Return Rank: 66
FZROX Sharpe Ratio Rank: 63
FZROX Sortino Ratio Rank: 57
FZROX Omega Ratio Rank: 58
FZROX Calmar Ratio Rank: 71
FZROX Martin Ratio Rank: 80

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.

FOCKX vs. FZROX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity OTC Portfolio Class K (FOCKX) and Fidelity ZERO Total Market Index Fund (FZROX). 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.

	FOCKX	FZROX	Difference
Sharpe ratio: Return per unit of total volatility	3.13	2.14	+0.99
Sortino ratio: Return per unit of downside risk	3.85	2.90	+0.95
Omega ratio: Gain probability vs. loss probability	1.53	1.38	+0.14
Calmar ratio: Return relative to maximum drawdown	5.40	3.10	+2.31
Martin ratio: Return relative to average drawdown	22.89	13.86	+9.03

FOCKX vs. FZROX - Sharpe Ratio Comparison

The current FOCKX Sharpe Ratio is 3.13, which is higher than the FZROX Sharpe Ratio of 2.14. The chart below compares the historical Sharpe Ratios of FOCKX and FZROX, 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

FOCKX vs. FZROX - Drawdown Comparison

The maximum FOCKX drawdown since its inception was -53.33%, which is greater than FZROX's maximum drawdown of -34.96%. Use the drawdown chart below to compare losses from any high point for FOCKX and FZROX.

Drawdown Indicators

	FOCKX	FZROX	Difference
Max Drawdown Largest peak-to-trough decline	-53.33%	-34.96%	-18.37%
Max Drawdown (1Y) Largest decline over 1 year	-11.28%	-8.89%	-2.39%
Max Drawdown (3Y) Largest decline over 3 years	-24.83%	-19.38%	-5.45%
Max Drawdown (5Y) Largest decline over 5 years	-36.97%	-25.12%	-11.85%
Max Drawdown (10Y) Largest decline over 10 years	-36.97%	—	—
Current Drawdown Current decline from peak	-0.09%	-1.13%	+1.04%
Average Drawdown Average peak-to-trough decline	-8.36%	-5.49%	-2.87%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.65%	1.98%	+0.67%

Volatility

FOCKX vs. FZROX - Volatility Comparison

Fidelity OTC Portfolio Class K (FOCKX) has a higher volatility of 8.83% compared to Fidelity ZERO Total Market Index Fund (FZROX) at 4.94%. This indicates that FOCKX's price experiences larger fluctuations and is considered to be riskier than FZROX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FOCKX	FZROX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.83%	4.94%	+3.89%
Volatility (6M) Calculated over the trailing 6-month period	15.86%	10.16%	+5.70%
Volatility (1Y) Calculated over the trailing 1-year period	19.46%	12.85%	+6.61%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.94%	17.53%	+5.41%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.58%	20.13%	+2.45%

FOCKX vs. FZROX - Expense Ratio Comparison

FOCKX has a 0.73% expense ratio, which is higher than FZROX's 0.00% expense ratio.

Dividends

FOCKX vs. FZROX - Dividend Comparison

FOCKX's dividend yield for the trailing twelve months is around 5.83%, more than FZROX's 0.92% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FOCKX Fidelity OTC Portfolio Class K	5.83%	7.56%	16.42%	0.09%	3.97%	11.34%	6.18%	7.49%	7.81%	4.85%	3.25%	5.42%
FZROX Fidelity ZERO Total Market Index Fund	0.92%	1.02%	1.16%	1.36%	1.57%	1.25%	1.27%	1.51%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FOCKX and FZROX in my portfolio?

FOCKX and FZROX 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, FOCKX or FZROX?

FOCKX has higher volatility (8.83%) compared to FZROX (4.94%). In terms of maximum drawdown, FOCKX dropped -53.33% vs FZROX's -34.96%.

Which has better risk-adjusted returns?

FOCKX currently has the higher Sharpe Ratio (3.13 vs 2.14), 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.