FNILX vs. IVV

Last updated Jun 4, 2026

FNILX (Fidelity ZERO Large Cap Index Fund) and IVV (iShares Core S&P 500 ETF) are both funds - FNILX is a Large Cap Blend Equities fund managed by Fidelity, while IVV is a S&P 500 fund tracking the S&P 500 Index. Over the past 5 years, FNILX returned 14.13%/yr vs 13.88%/yr for IVV. With a 0.99 correlation, they move nearly in lockstep. FNILX charges 0.00%/yr vs 0.03%/yr for IVV.

Performance

FNILX vs. IVV - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity ZERO Large Cap Index Fund (FNILX) and iShares Core S&P 500 ETF (IVV). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FNILX achieves a 11.56% return, which is significantly higher than IVV's 10.85% return.

FNILX

• 1D: 0.26%
• 1M: 6.04%
• YTD: 11.56%
• 6M: 11.44%
• 1Y: 28.65%
• 3Y*: 23.01%
• 5Y*: 14.13%
• 10Y*: —

IVV

• 1D: -0.76%
• 1M: 4.97%
• YTD: 10.85%
• 6M: 10.87%
• 1Y: 28.00%
• 3Y*: 22.43%
• 5Y*: 13.88%
• 10Y*: 15.54%

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

FNILX vs. IVV - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
FNILX Fidelity ZERO Large Cap Index Fund	11.56%	17.81%	25.47%	27.45%	-19.37%	26.67%	21.13%	31.79%	-13.60%
IVV iShares Core S&P 500 ETF	10.85%	17.85%	24.93%	26.31%	-18.16%	28.76%	18.40%	31.07%	-13.46%

Correlation

The correlation between FNILX and IVV is 0.99 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.99
Correlation (3Y) Calculated over the trailing 3-year period	0.98
Correlation (5Y) Calculated over the trailing 5-year period	0.99
Correlation (All Time) Calculated using the full available price history since Oct 1, 2018	0.99

The correlation between FNILX and IVV has been stable across timeframes, ranging from 0.98 to 0.99 - a consistent structural relationship.

Return for Risk

FNILX vs. IVV — Risk / Return Rank

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

FNILX

FNILX Risk / Return Rank: 71
FNILX Sharpe Ratio Rank: 73
FNILX Sortino Ratio Rank: 65
FNILX Omega Ratio Rank: 64
FNILX Calmar Ratio Rank: 72
FNILX Martin Ratio Rank: 80

IVV

IVV Risk / Return Rank: 70
IVV Sharpe Ratio Rank: 71
IVV Sortino Ratio Rank: 70
IVV Omega Ratio Rank: 70
IVV Calmar Ratio Rank: 62
IVV Martin Ratio Rank: 75

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.

FNILX vs. IVV - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity ZERO Large Cap Index Fund (FNILX) and iShares Core S&P 500 ETF (IVV). 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.

	FNILX	IVV	Difference
Sharpe ratio: Return per unit of total volatility	2.48	2.39	+0.09
Sortino ratio: Return per unit of downside risk	3.36	3.25	+0.11
Omega ratio: Gain probability vs. loss probability	1.45	1.43	+0.01
Calmar ratio: Return relative to maximum drawdown	3.28	3.17	+0.12
Martin ratio: Return relative to average drawdown	15.01	14.71	+0.30
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FNILX vs. IVV - Sharpe Ratio Comparison

The current FNILX Sharpe Ratio is 2.48, which is comparable to the IVV Sharpe Ratio of 2.39. The chart below compares the historical Sharpe Ratios of FNILX and IVV, 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

	FNILX	IVV	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.48	2.39	+0.09
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.82	0.83	0.00
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.86	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.76	0.45	+0.31

Drawdowns

FNILX vs. IVV - Drawdown Comparison

The maximum FNILX drawdown since its inception was -33.76%, smaller than the maximum IVV drawdown of -55.25%. Use the drawdown chart below to compare losses from any high point for FNILX and IVV.

Drawdown Indicators

	FNILX	IVV	Difference
Max Drawdown Largest peak-to-trough decline	-33.76%	-55.25%	+21.49%
Max Drawdown (1Y) Largest decline over 1 year	-9.01%	-8.89%	-0.12%
Max Drawdown (3Y) Largest decline over 3 years	-19.08%	-18.75%	-0.33%
Max Drawdown (5Y) Largest decline over 5 years	-25.40%	-24.53%	-0.87%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.90%	—
Current Drawdown Current decline from peak	0.00%	-0.76%	+0.76%
Average Drawdown Average peak-to-trough decline	-5.37%	-10.78%	+5.41%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.97%	1.91%	+0.06%

Volatility

FNILX vs. IVV - Volatility Comparison

Fidelity ZERO Large Cap Index Fund (FNILX) and iShares Core S&P 500 ETF (IVV) have volatilities of 2.88% and 2.87%, 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

	FNILX	IVV	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.88%	2.87%	+0.01%
Volatility (6M) Calculated over the trailing 6-month period	8.99%	8.90%	+0.09%
Volatility (1Y) Calculated over the trailing 1-year period	11.93%	11.80%	+0.13%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.25%	16.88%	+0.37%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.04%	18.05%	+1.99%

FNILX vs. IVV - Expense Ratio Comparison

FNILX has a 0.00% expense ratio, which is lower than IVV's 0.03% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

FNILX vs. IVV - Dividend Comparison

FNILX's dividend yield for the trailing twelve months is around 0.91%, less than IVV's 1.06% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FNILX Fidelity ZERO Large Cap Index Fund	0.91%	1.01%	1.09%	1.34%	1.53%	0.95%	1.20%	1.17%	0.53%	0.00%	0.00%	0.00%
IVV iShares Core S&P 500 ETF	1.06%	1.17%	1.30%	1.44%	1.66%	1.20%	1.57%	1.85%	2.21%	1.75%	2.01%	2.27%

Frequently Asked Questions

Can I hold both FNILX and IVV in my portfolio?

With a correlation of 0.99, FNILX and IVV 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, FNILX or IVV?

FNILX has higher volatility (2.88%) compared to IVV (2.87%). In terms of maximum drawdown, FNILX dropped -33.76% vs IVV's -55.25%.

Which has better risk-adjusted returns?

FNILX currently has the higher Sharpe Ratio (2.48 vs 2.39), 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.