SBSPX vs. FNILX

Last updated Jun 4, 2026

SBSPX (Franklin S&P 500 Index Fund) and FNILX (Fidelity ZERO Large Cap Index Fund) are both Large Cap Blend Equities funds. Over the past 5 years, SBSPX returned 13.69%/yr vs 14.13%/yr for FNILX. With a 0.99 correlation, they move nearly in lockstep. SBSPX charges 0.54%/yr vs 0.00%/yr for FNILX.

Performance

SBSPX vs. FNILX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Franklin S&P 500 Index Fund (SBSPX) and Fidelity ZERO Large Cap Index Fund (FNILX). 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 SBSPX having a 11.49% return and FNILX slightly higher at 11.56%.

SBSPX

• 1D: 0.14%
• 1M: 5.76%
• YTD: 11.49%
• 6M: 11.46%
• 1Y: 28.32%
• 3Y*: 22.12%
• 5Y*: 13.69%
• 10Y*: 14.90%

FNILX

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

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

SBSPX vs. FNILX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
SBSPX Franklin S&P 500 Index Fund	11.49%	17.25%	24.35%	25.62%	-18.49%	27.92%	17.86%	30.68%	-13.62%
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%

Correlation

The correlation between SBSPX and FNILX is 1.00 - 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	1.00
Correlation (3Y) Calculated over the trailing 3-year period	0.99
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 SBSPX and FNILX has been stable across timeframes, ranging from 0.99 to 1.00 - a consistent structural relationship.

Return for Risk

SBSPX vs. FNILX — Risk / Return Rank

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

SBSPX

SBSPX Risk / Return Rank: 70
SBSPX Sharpe Ratio Rank: 72
SBSPX Sortino Ratio Rank: 64
SBSPX Omega Ratio Rank: 64
SBSPX Calmar Ratio Rank: 70
SBSPX Martin Ratio Rank: 81

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

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.

SBSPX vs. FNILX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Franklin S&P 500 Index Fund (SBSPX) 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.

	SBSPX	FNILX	Difference
Sharpe ratio Return per unit of total volatility	2.46	2.48	-0.02
Sortino ratio Return per unit of downside risk	3.35	3.36	-0.01
Omega ratio Gain probability vs. loss probability	1.45	1.45	0.00
Calmar ratio Return relative to maximum drawdown	3.25	3.28	-0.03
Martin ratio Return relative to average drawdown	15.14	15.01	+0.13
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SBSPX vs. FNILX - Sharpe Ratio Comparison

The current SBSPX Sharpe Ratio is 2.46, which is comparable to the FNILX Sharpe Ratio of 2.48. The chart below compares the historical Sharpe Ratios of SBSPX 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.

Sharpe Ratios by Period

	SBSPX	FNILX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.46	2.48	-0.02
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.81	0.82	-0.01
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.83	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.46	0.76	-0.30

Drawdowns

SBSPX vs. FNILX - Drawdown Comparison

The maximum SBSPX drawdown since its inception was -55.62%, which is greater than FNILX's maximum drawdown of -33.76%. Use the drawdown chart below to compare losses from any high point for SBSPX and FNILX.

Drawdown Indicators

	SBSPX	FNILX	Difference
Max Drawdown Largest peak-to-trough decline	-55.62%	-33.76%	-21.86%
Max Drawdown (1Y) Largest decline over 1 year	-8.98%	-9.01%	+0.03%
Max Drawdown (3Y) Largest decline over 3 years	-18.82%	-19.08%	+0.26%
Max Drawdown (5Y) Largest decline over 5 years	-24.66%	-25.40%	+0.74%
Max Drawdown (10Y) Largest decline over 10 years	-33.82%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-10.65%	-5.37%	-5.28%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.92%	1.97%	-0.05%

Volatility

SBSPX vs. FNILX - Volatility Comparison

Franklin S&P 500 Index Fund (SBSPX) and Fidelity ZERO Large Cap Index Fund (FNILX) have volatilities of 2.84% and 2.88%, 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

	SBSPX	FNILX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.84%	2.88%	-0.04%
Volatility (6M) Calculated over the trailing 6-month period	8.98%	8.99%	-0.01%
Volatility (1Y) Calculated over the trailing 1-year period	11.87%	11.93%	-0.06%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.91%	17.25%	-0.34%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.10%	20.04%	-1.94%

SBSPX vs. FNILX - Expense Ratio Comparison

SBSPX has a 0.54% expense ratio, which is higher than FNILX's 0.00% expense ratio.

Dividends

SBSPX vs. FNILX - Dividend Comparison

SBSPX's dividend yield for the trailing twelve months is around 0.70%, less than FNILX's 0.91% 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%
SBSPX Franklin S&P 500 Index Fund	0.70%	0.78%	1.11%	0.97%	4.08%	5.10%	5.99%	5.49%	5.96%	3.50%	4.08%	2.65%

Frequently Asked Questions

Can I hold both SBSPX and FNILX in my portfolio?

With a correlation of 1.00, SBSPX and FNILX 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, SBSPX or FNILX?

FNILX has higher volatility (2.88%) compared to SBSPX (2.84%). In terms of maximum drawdown, SBSPX dropped -55.62% vs FNILX's -33.76%.

Which has better risk-adjusted returns?

FNILX currently has the higher Sharpe Ratio (2.48 vs 2.46), 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.