SPHIX vs. FNILX

Last updated Jun 4, 2026

SPHIX (Fidelity High Income Fund) and FNILX (Fidelity ZERO Large Cap Index Fund) are both mutual funds - SPHIX is a High Yield Bonds fund managed by Fidelity, while FNILX is a Large Cap Blend Equities fund managed by Fidelity. Over the past 5 years, SPHIX returned 4.38%/yr vs 14.13%/yr for FNILX. A 0.53 correlation means they provide meaningful diversification when combined. SPHIX charges 0.70%/yr vs 0.00%/yr for FNILX.

Performance

SPHIX vs. FNILX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity High Income Fund (SPHIX) 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, SPHIX achieves a 3.57% return, which is significantly lower than FNILX's 11.56% return.

SPHIX

• 1D: 0.00%
• 1M: 0.87%
• YTD: 3.57%
• 6M: 4.43%
• 1Y: 10.31%
• 3Y*: 10.21%
• 5Y*: 4.38%
• 10Y*: 5.28%

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)

SPHIX vs. FNILX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
SPHIX Fidelity High Income Fund	3.57%	9.85%	9.57%	10.99%	-13.08%	3.55%	2.47%	14.27%	-5.39%
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 SPHIX and FNILX is 0.62, 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	0.62
Correlation (3Y) Calculated over the trailing 3-year period	0.54
Correlation (5Y) Calculated over the trailing 5-year period	0.53
Correlation (All Time) Calculated using the full available price history since Oct 1, 2018	0.53

The correlation between SPHIX and FNILX has been stable across timeframes, ranging from 0.53 to 0.62 - a consistent structural relationship.

Return for Risk

SPHIX vs. FNILX — Risk / Return Rank

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

SPHIX

SPHIX Risk / Return Rank: 95
SPHIX Sharpe Ratio Rank: 95
SPHIX Sortino Ratio Rank: 97
SPHIX Omega Ratio Rank: 96
SPHIX Calmar Ratio Rank: 91
SPHIX Martin Ratio Rank: 96

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.

SPHIX vs. FNILX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity High Income Fund (SPHIX) 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.

	SPHIX	FNILX	Difference
Sharpe ratio: Return per unit of total volatility	3.32	2.48	+0.84
Sortino ratio: Return per unit of downside risk	5.84	3.36	+2.48
Omega ratio: Gain probability vs. loss probability	1.81	1.45	+0.37
Calmar ratio: Return relative to maximum drawdown	4.86	3.28	+1.58
Martin ratio: Return relative to average drawdown	24.56	15.01	+9.55
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SPHIX vs. FNILX - Sharpe Ratio Comparison

The current SPHIX Sharpe Ratio is 3.32, which is higher than the FNILX Sharpe Ratio of 2.48. The chart below compares the historical Sharpe Ratios of SPHIX 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

	SPHIX	FNILX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.32	2.48	+0.84
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.83	0.82	+0.01
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.91	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.46	0.76	+0.69

Drawdowns

SPHIX vs. FNILX - Drawdown Comparison

The maximum SPHIX drawdown since its inception was -31.36%, smaller than the maximum FNILX drawdown of -33.76%. Use the drawdown chart below to compare losses from any high point for SPHIX and FNILX.

Drawdown Indicators

	SPHIX	FNILX	Difference
Max Drawdown Largest peak-to-trough decline	-31.36%	-33.76%	+2.40%
Max Drawdown (1Y) Largest decline over 1 year	-2.33%	-9.01%	+6.68%
Max Drawdown (3Y) Largest decline over 3 years	-4.15%	-19.08%	+14.93%
Max Drawdown (5Y) Largest decline over 5 years	-16.46%	-25.40%	+8.94%
Max Drawdown (10Y) Largest decline over 10 years	-22.44%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-3.48%	-5.37%	+1.89%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.46%	1.97%	-1.51%

Volatility

SPHIX vs. FNILX - Volatility Comparison

The current volatility for Fidelity High Income Fund (SPHIX) is 0.96%, while Fidelity ZERO Large Cap Index Fund (FNILX) has a volatility of 2.88%. This indicates that SPHIX experiences smaller price fluctuations and is considered to be less risky than FNILX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SPHIX	FNILX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.96%	2.88%	-1.92%
Volatility (6M) Calculated over the trailing 6-month period	2.57%	8.99%	-6.42%
Volatility (1Y) Calculated over the trailing 1-year period	3.42%	11.93%	-8.51%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.30%	17.25%	-11.95%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.79%	20.04%	-14.25%

SPHIX vs. FNILX - Expense Ratio Comparison

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

Dividends

SPHIX vs. FNILX - Dividend Comparison

SPHIX's dividend yield for the trailing twelve months is around 6.38%, more 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%
SPHIX Fidelity High Income Fund	6.38%	6.43%	6.10%	5.41%	3.91%	4.07%	4.71%	5.10%	6.02%	5.40%	6.07%	5.59%

Frequently Asked Questions

Can I hold both SPHIX and FNILX in my portfolio?

SPHIX and FNILX have a correlation of 0.62, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SPHIX or FNILX?

FNILX has higher volatility (2.88%) compared to SPHIX (0.96%). In terms of maximum drawdown, SPHIX dropped -31.36% vs FNILX's -33.76%.

Which has better risk-adjusted returns?

SPHIX currently has the higher Sharpe Ratio (3.32 vs 2.48), 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.