FBSOX vs. FNILX

Last updated Jun 24, 2026

FBSOX (Fidelity Select IT Services Portfolio) and FNILX (Fidelity ZERO Large Cap Index Fund) are both mutual funds - FBSOX is a Technology Equities fund managed by Fidelity, while FNILX is a Large Cap Blend Equities fund managed by Fidelity. Over the past 5 years, FBSOX returned -5.36%/yr vs 13.32%/yr for FNILX. Their correlation of 0.82 suggests significant overlap in exposure. FBSOX charges 0.70%/yr vs 0.00%/yr for FNILX.

Performance

FBSOX vs. FNILX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Select IT Services Portfolio (FBSOX) and Fidelity ZERO Large Cap Index Fund (FNILX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FBSOX achieves a -11.70% return, which is significantly lower than FNILX's 9.63% return.

FBSOX

• 1D: -1.32%
• 1M: -0.80%
• YTD: -11.70%
• 6M: -18.73%
• 1Y: -20.58%
• 3Y*: 1.92%
• 5Y*: -5.36%
• 10Y*: 8.88%

FNILX

• 1D: -0.37%
• 1M: 0.34%
• YTD: 9.63%
• 6M: 8.65%
• 1Y: 25.14%
• 3Y*: 21.66%
• 5Y*: 13.32%
• 10Y*: —

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

FBSOX vs. FNILX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
FBSOX Fidelity Select IT Services Portfolio	-11.70%	-9.19%	15.04%	23.23%	-28.86%	2.53%	31.47%	42.25%	-16.99%
FNILX Fidelity ZERO Large Cap Index Fund	9.63%	17.81%	25.47%	27.45%	-19.37%	26.67%	21.13%	31.79%	-13.60%

Correlation

The correlation between FBSOX and FNILX is 0.55, 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	0.55
Correlation (3Y) Calculated over the trailing 3-year period	0.69
Correlation (5Y) Calculated over the trailing 5-year period	0.79
Correlation (All Time) Calculated using the full available price history since Sep 28, 2018	0.82

Over the past year, the correlation between FBSOX and FNILX has dropped to 0.55 - well below their long-term average of 0.82, suggesting their price drivers have been diverging.

Return for Risk

FBSOX vs. FNILX — Risk / Return Rank

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

FBSOX

FBSOX Risk / Return Rank: 1
FBSOX Sharpe Ratio Rank: 1
FBSOX Sortino Ratio Rank: 1
FBSOX Omega Ratio Rank: 1
FBSOX Calmar Ratio Rank: 1
FBSOX Martin Ratio Rank: 1

FNILX

FNILX Risk / Return Rank: 62
FNILX Sharpe Ratio Rank: 60
FNILX Sortino Ratio Rank: 54
FNILX Omega Ratio Rank: 56
FNILX Calmar Ratio Rank: 64
FNILX Martin Ratio Rank: 73

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.

FBSOX vs. FNILX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Select IT Services Portfolio (FBSOX) and Fidelity ZERO Large Cap Index Fund (FNILX). 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.

	FBSOX	FNILX	Difference
Sharpe ratio: Return per unit of total volatility	-0.87	2.10	-2.97
Sortino ratio: Return per unit of downside risk	-1.08	2.84	-3.91
Omega ratio: Gain probability vs. loss probability	0.86	1.38	-0.52
Calmar ratio: Return relative to maximum drawdown	-0.60	2.94	-3.54
Martin ratio: Return relative to average drawdown	-1.11	12.99	-14.11

FBSOX vs. FNILX - Sharpe Ratio Comparison

The current FBSOX Sharpe Ratio is -0.87, which is lower than the FNILX Sharpe Ratio of 2.10. The chart below compares the historical Sharpe Ratios of FBSOX and FNILX, 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

FBSOX vs. FNILX - Drawdown Comparison

The maximum FBSOX drawdown since its inception was -50.01%, which is greater than FNILX's maximum drawdown of -33.76%. Use the drawdown chart below to compare losses from any high point for FBSOX and FNILX.

Drawdown Indicators

	FBSOX	FNILX	Difference
Max Drawdown Largest peak-to-trough decline	-50.01%	-33.76%	-16.25%
Max Drawdown (1Y) Largest decline over 1 year	-32.09%	-9.01%	-23.08%
Max Drawdown (3Y) Largest decline over 3 years	-35.31%	-19.08%	-16.23%
Max Drawdown (5Y) Largest decline over 5 years	-42.28%	-25.40%	-16.88%
Max Drawdown (10Y) Largest decline over 10 years	-42.28%	—	—
Current Drawdown Current decline from peak	-28.11%	-1.73%	-26.38%
Average Drawdown Average peak-to-trough decline	-10.22%	-5.35%	-4.87%
Ulcer Index Depth and duration of drawdowns from previous peaks	17.34%	2.03%	+15.31%

Volatility

FBSOX vs. FNILX - Volatility Comparison

Fidelity Select IT Services Portfolio (FBSOX) has a higher volatility of 8.55% compared to Fidelity ZERO Large Cap Index Fund (FNILX) at 4.82%. This indicates that FBSOX's price experiences larger fluctuations and is considered to be riskier than FNILX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FBSOX	FNILX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.55%	4.82%	+3.73%
Volatility (6M) Calculated over the trailing 6-month period	19.21%	9.90%	+9.31%
Volatility (1Y) Calculated over the trailing 1-year period	22.36%	12.61%	+9.75%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.68%	17.34%	+5.34%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.92%	20.04%	+2.88%

FBSOX vs. FNILX - Expense Ratio Comparison

FBSOX has a 0.70% expense ratio, which is higher than FNILX's 0.00% expense ratio.

Dividends

FBSOX vs. FNILX - Dividend Comparison

FBSOX's dividend yield for the trailing twelve months is around 10.29%, more than FNILX's 0.92% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FBSOX Fidelity Select IT Services Portfolio	10.29%	14.07%	18.34%	3.81%	14.40%	15.64%	5.27%	2.30%	4.97%	3.10%	0.32%	3.87%
FNILX Fidelity ZERO Large Cap Index Fund	0.92%	1.01%	1.09%	1.34%	1.53%	0.95%	1.20%	1.17%	0.53%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FBSOX and FNILX in my portfolio?

FBSOX and FNILX have a correlation of 0.55, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FBSOX or FNILX?

FBSOX has higher volatility (8.55%) compared to FNILX (4.82%). In terms of maximum drawdown, FBSOX dropped -50.01% vs FNILX's -33.76%.

Which has better risk-adjusted returns?

FNILX currently has the higher Sharpe Ratio (2.10 vs -0.87), 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.