EQNIX vs. SPY

Last updated Jun 23, 2026

EQNIX (MFS Equity Income Fund) and SPY (State Street SPDR S&P 500 ETF) are both funds - EQNIX is a Large Cap Value Equities fund managed by MFS, while SPY is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, EQNIX returned 12.88%/yr vs 15.70%/yr for SPY. Their correlation of 0.92 suggests significant overlap in exposure. EQNIX charges 0.64%/yr vs 0.09%/yr for SPY.

Performance

EQNIX vs. SPY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Equity Income Fund (EQNIX) and State Street SPDR S&P 500 ETF (SPY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, EQNIX achieves a 14.52% return, which is significantly higher than SPY's 9.74% return. Over the past 10 years, EQNIX has underperformed SPY with an annualized return of 12.88%, while SPY has yielded a comparatively higher 15.70% annualized return.

EQNIX

• 1D: 0.08%
• 1M: 1.83%
• YTD: 14.52%
• 6M: 13.69%
• 1Y: 28.36%
• 3Y*: 17.93%
• 5Y*: 12.65%
• 10Y*: 12.88%

SPY

• 1D: -0.31%
• 1M: 0.09%
• YTD: 9.74%
• 6M: 9.27%
• 1Y: 26.65%
• 3Y*: 21.27%
• 5Y*: 13.51%
• 10Y*: 15.70%

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

EQNIX vs. SPY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
EQNIX MFS Equity Income Fund	14.52%	16.90%	12.89%	16.23%	-6.97%	26.35%	8.59%	25.72%	-7.55%	19.34%
SPY State Street SPDR S&P 500 ETF	9.74%	17.72%	24.89%	26.18%	-18.18%	28.73%	18.33%	31.22%	-4.57%	21.71%

Correlation

The correlation between EQNIX and SPY is 0.78, 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	0.78
Correlation (3Y) Calculated over the trailing 3-year period	0.83
Correlation (5Y) Calculated over the trailing 5-year period	0.89
Correlation (10Y) Calculated over the trailing 10-year period	0.91
Correlation (All Time) Calculated using the full available price history since Jan 2, 2013	0.92

The correlation between EQNIX and SPY shifts across timeframes, from 0.78 (1 year) to 0.92 (all time), reflecting how their relationship changes across market environments.

Return for Risk

EQNIX vs. SPY — Risk / Return Rank

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

EQNIX

EQNIX Risk / Return Rank: 79
EQNIX Sharpe Ratio Rank: 80
EQNIX Sortino Ratio Rank: 77
EQNIX Omega Ratio Rank: 74
EQNIX Calmar Ratio Rank: 82
EQNIX Martin Ratio Rank: 82

SPY

SPY Risk / Return Rank: 68
SPY Sharpe Ratio Rank: 69
SPY Sortino Ratio Rank: 66
SPY Omega Ratio Rank: 68
SPY Calmar Ratio Rank: 63
SPY Martin Ratio Rank: 74

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.

EQNIX vs. SPY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Equity Income Fund (EQNIX) and State Street SPDR S&P 500 ETF (SPY). 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.

	EQNIX	SPY	Difference
Sharpe ratio: Return per unit of total volatility	2.41	2.16	+0.25
Sortino ratio: Return per unit of downside risk	3.35	2.91	+0.44
Omega ratio: Gain probability vs. loss probability	1.44	1.39	+0.05
Calmar ratio: Return relative to maximum drawdown	3.59	3.01	+0.57
Martin ratio: Return relative to average drawdown	14.13	13.54	+0.60

EQNIX vs. SPY - Sharpe Ratio Comparison

The current EQNIX Sharpe Ratio is 2.41, which is comparable to the SPY Sharpe Ratio of 2.16. The chart below compares the historical Sharpe Ratios of EQNIX and SPY, 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

EQNIX vs. SPY - Drawdown Comparison

The maximum EQNIX drawdown since its inception was -36.60%, smaller than the maximum SPY drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for EQNIX and SPY.

Drawdown Indicators

	EQNIX	SPY	Difference
Max Drawdown Largest peak-to-trough decline	-36.60%	-55.19%	+18.59%
Max Drawdown (1Y) Largest decline over 1 year	-7.94%	-8.88%	+0.94%
Max Drawdown (3Y) Largest decline over 3 years	-16.26%	-18.76%	+2.50%
Max Drawdown (5Y) Largest decline over 5 years	-18.64%	-24.50%	+5.86%
Max Drawdown (10Y) Largest decline over 10 years	-36.60%	-33.72%	-2.88%
Current Drawdown Current decline from peak	-1.19%	-1.75%	+0.56%
Average Drawdown Average peak-to-trough decline	-3.44%	-9.04%	+5.60%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.01%	1.97%	+0.04%

Volatility

EQNIX vs. SPY - Volatility Comparison

The current volatility for MFS Equity Income Fund (EQNIX) is 3.61%, while State Street SPDR S&P 500 ETF (SPY) has a volatility of 4.64%. This indicates that EQNIX experiences smaller price fluctuations and is considered to be less risky than SPY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	EQNIX	SPY	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.61%	4.64%	-1.03%
Volatility (6M) Calculated over the trailing 6-month period	9.11%	9.75%	-0.64%
Volatility (1Y) Calculated over the trailing 1-year period	11.84%	12.43%	-0.59%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.96%	17.14%	-2.18%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.15%	17.99%	-0.84%

EQNIX vs. SPY - Expense Ratio Comparison

EQNIX has a 0.64% expense ratio, which is higher than SPY's 0.09% expense ratio.

Dividends

EQNIX vs. SPY - Dividend Comparison

EQNIX's dividend yield for the trailing twelve months is around 10.63%, more than SPY's 1.01% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
EQNIX MFS Equity Income Fund	10.63%	12.17%	6.60%	4.05%	6.24%	8.38%	3.71%	2.29%	7.27%	4.75%	2.42%	2.89%
SPY State Street SPDR S&P 500 ETF	1.01%	1.07%	1.21%	1.40%	1.65%	1.20%	1.52%	1.75%	2.04%	1.80%	2.03%	2.06%

Frequently Asked Questions

Can I hold both EQNIX and SPY in my portfolio?

EQNIX and SPY have a correlation of 0.78, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, EQNIX or SPY?

SPY has higher volatility (4.64%) compared to EQNIX (3.61%). In terms of maximum drawdown, EQNIX dropped -36.60% vs SPY's -55.19%.

Which has better risk-adjusted returns?

EQNIX currently has the higher Sharpe Ratio (2.41 vs 2.16), 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.