GCEQX vs. SPY

Last updated Apr 1, 2026

Compare and contrast key facts about Green Century Equity Fund Individual Investor Class (GCEQX) and State Street SPDR S&P 500 ETF (SPY).

GCEQX is managed by Green Century. It was launched on Sep 13, 1995. SPY is a passively managed fund by State Street that tracks the performance of the S&P 500 Index. It was launched on Jan 22, 1993.

Performance

GCEQX vs. SPY - Performance Comparison

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

GCEQX vs. SPY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
GCEQX Green Century Equity Fund Individual Investor Class	-9.94%	16.73%	21.72%	27.70%	-23.03%	29.69%	22.23%	30.71%	-4.00%	21.95%
SPY State Street SPDR S&P 500 ETF	-4.37%	17.72%	24.89%	26.18%	-18.18%	28.73%	18.33%	31.22%	-4.57%	21.71%

Returns By Period

In the year-to-date period, GCEQX achieves a -9.94% return, which is significantly lower than SPY's -4.37% return. Over the past 10 years, GCEQX has underperformed SPY with an annualized return of 12.48%, while SPY has yielded a comparatively higher 13.98% annualized return.

GCEQX

• 1D: -0.23%
• 1M: -8.80%
• YTD: -9.94%
• 6M: -7.60%
• 1Y: 13.61%
• 3Y*: 14.42%
• 5Y*: 8.95%
• 10Y*: 12.48%

SPY

• 1D: 2.91%
• 1M: -4.94%
• YTD: -4.37%
• 6M: -1.82%
• 1Y: 17.59%
• 3Y*: 18.19%
• 5Y*: 11.69%
• 10Y*: 13.98%

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

GCEQX vs. SPY - Expense Ratio Comparison

GCEQX has a 1.25% expense ratio, which is higher than SPY's 0.09% expense ratio.

GCEQX

Green Century Equity Fund Individual Investor Class

SPY

State Street SPDR S&P 500 ETF

Return for Risk

GCEQX vs. SPY — Risk / Return Rank

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

GCEQX

GCEQX Risk / Return Rank: 35
GCEQX Sharpe Ratio Rank: 33
GCEQX Sortino Ratio Rank: 37
GCEQX Omega Ratio Rank: 36
GCEQX Calmar Ratio Rank: 35
GCEQX Martin Ratio Rank: 35

SPY

SPY Risk / Return Rank: 64
SPY Sharpe Ratio Rank: 56
SPY Sortino Ratio Rank: 60
SPY Omega Ratio Rank: 65
SPY Calmar Ratio Rank: 65
SPY 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.

GCEQX vs. SPY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Green Century Equity Fund Individual Investor Class (GCEQX) 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.

	GCEQX	SPY	Difference
Sharpe ratio Return per unit of total volatility	0.75	0.93	-0.18
Sortino ratio Return per unit of downside risk	1.20	1.45	-0.25
Omega ratio Gain probability vs. loss probability	1.17	1.22	-0.05
Calmar ratio Return relative to maximum drawdown	0.95	1.53	-0.57
Martin ratio Return relative to average drawdown	3.77	7.30	-3.53
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GCEQX vs. SPY - Sharpe Ratio Comparison

The current GCEQX Sharpe Ratio is 0.75, which is comparable to the SPY Sharpe Ratio of 0.93. The chart below compares the historical Sharpe Ratios of GCEQX and SPY, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	GCEQX	SPY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.75	0.93	-0.18
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.50	0.69	-0.19
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.67	0.78	-0.12
Sharpe Ratio (All Time) Calculated using the full available price history	0.46	0.56	-0.10

Correlation

The correlation between GCEQX and SPY is 0.96, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

GCEQX vs. SPY - Dividend Comparison

GCEQX's dividend yield for the trailing twelve months is around 4.88%, more than SPY's 1.14% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GCEQX Green Century Equity Fund Individual Investor Class	4.88%	4.40%	1.10%	0.13%	0.47%	1.11%	1.14%	0.68%	2.24%	0.90%	2.29%	1.87%
SPY State Street SPDR S&P 500 ETF	1.14%	1.07%	1.21%	1.40%	1.65%	1.20%	1.52%	1.75%	2.04%	1.80%	2.03%	2.06%

Drawdowns

GCEQX vs. SPY - Drawdown Comparison

The maximum GCEQX drawdown since its inception was -56.88%, roughly equal to the maximum SPY drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for GCEQX and SPY.

Drawdown Indicators

	GCEQX	SPY	Difference
Max Drawdown Largest peak-to-trough decline	-56.88%	-55.19%	-1.69%
Max Drawdown (1Y) Largest decline over 1 year	-12.27%	-12.05%	-0.22%
Max Drawdown (5Y) Largest decline over 5 years	-29.33%	-24.50%	-4.83%
Max Drawdown (10Y) Largest decline over 10 years	-32.89%	-33.72%	+0.83%
Current Drawdown Current decline from peak	-12.27%	-6.24%	-6.03%
Average Drawdown Average peak-to-trough decline	-12.62%	-9.09%	-3.53%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.10%	2.52%	+0.58%

Volatility

GCEQX vs. SPY - Volatility Comparison

The current volatility for Green Century Equity Fund Individual Investor Class (GCEQX) is 4.62%, while State Street SPDR S&P 500 ETF (SPY) has a volatility of 5.31%. This indicates that GCEQX 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

	GCEQX	SPY	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.62%	5.31%	-0.69%
Volatility (6M) Calculated over the trailing 6-month period	9.97%	9.47%	+0.50%
Volatility (1Y) Calculated over the trailing 1-year period	18.73%	19.05%	-0.32%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.03%	17.06%	+0.97%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.77%	17.92%	+0.85%