FGTAX vs. SPIAX

Last updated Jun 4, 2026

FGTAX (Fidelity Advisor Mega Cap Stock Fund Class A) and SPIAX (Invesco S&P 500 Index A) are both mutual funds - FGTAX is a Large Cap Blend Equities fund managed by Fidelity, while SPIAX is a S&P 500 fund tracking the S&P 500. Over the past 10 years, FGTAX returned 16.25%/yr vs 15.05%/yr for SPIAX. With a 0.96 correlation, they move nearly in lockstep. FGTAX charges 0.90%/yr vs 0.54%/yr for SPIAX.

Performance

FGTAX vs. SPIAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Advisor Mega Cap Stock Fund Class A (FGTAX) and Invesco S&P 500 Index A (SPIAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FGTAX achieves a 10.34% return, which is significantly lower than SPIAX's 11.48% return. Over the past 10 years, FGTAX has outperformed SPIAX with an annualized return of 16.25%, while SPIAX has yielded a comparatively lower 15.05% annualized return.

FGTAX

• 1D: -0.32%
• 1M: 3.36%
• YTD: 10.34%
• 6M: 12.25%
• 1Y: 30.98%
• 3Y*: 25.22%
• 5Y*: 15.99%
• 10Y*: 16.25%

SPIAX

• 1D: 0.13%
• 1M: 5.76%
• YTD: 11.48%
• 6M: 11.48%
• 1Y: 28.36%
• 3Y*: 22.11%
• 5Y*: 13.68%
• 10Y*: 15.05%

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

FGTAX vs. SPIAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FGTAX Fidelity Advisor Mega Cap Stock Fund Class A	10.34%	26.58%	25.62%	26.18%	-9.26%	25.98%	12.59%	30.74%	-7.68%	17.54%
SPIAX Invesco S&P 500 Index A	11.48%	17.23%	24.34%	25.63%	-18.56%	27.99%	17.84%	30.78%	-4.97%	21.13%

Correlation

The correlation between FGTAX and SPIAX is 0.94, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.94
Correlation (3Y) Calculated over the trailing 3-year period	0.95
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.93
Correlation (All Time) Calculated using the full available price history since Feb 8, 2008	0.96

The correlation between FGTAX and SPIAX has been stable across timeframes, ranging from 0.93 to 0.96 - a consistent structural relationship.

Return for Risk

FGTAX vs. SPIAX — Risk / Return Rank

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

FGTAX

FGTAX Risk / Return Rank: 79
FGTAX Sharpe Ratio Rank: 82
FGTAX Sortino Ratio Rank: 77
FGTAX Omega Ratio Rank: 74
FGTAX Calmar Ratio Rank: 78
FGTAX Martin Ratio Rank: 84

SPIAX

SPIAX Risk / Return Rank: 71
SPIAX Sharpe Ratio Rank: 72
SPIAX Sortino Ratio Rank: 65
SPIAX Omega Ratio Rank: 64
SPIAX Calmar Ratio Rank: 71
SPIAX Martin Ratio Rank: 81

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.

FGTAX vs. SPIAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Advisor Mega Cap Stock Fund Class A (FGTAX) and Invesco S&P 500 Index A (SPIAX). 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.

	FGTAX	SPIAX	Difference
Sharpe ratio: Return per unit of total volatility	2.67	2.47	+0.20
Sortino ratio: Return per unit of downside risk	3.66	3.36	+0.30
Omega ratio: Gain probability vs. loss probability	1.49	1.45	+0.04
Calmar ratio: Return relative to maximum drawdown	3.53	3.27	+0.26
Martin ratio: Return relative to average drawdown	15.97	15.21	+0.76
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FGTAX vs. SPIAX - Sharpe Ratio Comparison

The current FGTAX Sharpe Ratio is 2.67, which is comparable to the SPIAX Sharpe Ratio of 2.47. The chart below compares the historical Sharpe Ratios of FGTAX and SPIAX, 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

	FGTAX	SPIAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.67	2.47	+0.20
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.96	0.81	+0.15
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.90	0.84	+0.06
Sharpe Ratio (All Time) Calculated using the full available price history	0.59	0.46	+0.13

Drawdowns

FGTAX vs. SPIAX - Drawdown Comparison

The maximum FGTAX drawdown since its inception was -53.07%, roughly equal to the maximum SPIAX drawdown of -55.47%. Use the drawdown chart below to compare losses from any high point for FGTAX and SPIAX.

Drawdown Indicators

	FGTAX	SPIAX	Difference
Max Drawdown Largest peak-to-trough decline	-53.07%	-55.47%	+2.40%
Max Drawdown (1Y) Largest decline over 1 year	-9.04%	-8.97%	-0.07%
Max Drawdown (3Y) Largest decline over 3 years	-18.52%	-18.84%	+0.32%
Max Drawdown (5Y) Largest decline over 5 years	-23.48%	-24.81%	+1.33%
Max Drawdown (10Y) Largest decline over 10 years	-35.21%	-33.84%	-1.37%
Current Drawdown Current decline from peak	-0.32%	0.00%	-0.32%
Average Drawdown Average peak-to-trough decline	-6.78%	-10.78%	+4.00%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.99%	1.92%	+0.07%

Volatility

FGTAX vs. SPIAX - Volatility Comparison

Fidelity Advisor Mega Cap Stock Fund Class A (FGTAX) and Invesco S&P 500 Index A (SPIAX) have volatilities of 2.71% and 2.82%, 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

	FGTAX	SPIAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.71%	2.82%	-0.11%
Volatility (6M) Calculated over the trailing 6-month period	9.04%	8.99%	+0.05%
Volatility (1Y) Calculated over the trailing 1-year period	11.97%	11.90%	+0.07%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.68%	16.91%	-0.23%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.11%	18.09%	+0.02%

FGTAX vs. SPIAX - Expense Ratio Comparison

FGTAX has a 0.90% expense ratio, which is higher than SPIAX's 0.54% expense ratio.

Dividends

FGTAX vs. SPIAX - Dividend Comparison

FGTAX's dividend yield for the trailing twelve months is around 3.37%, more than SPIAX's 0.91% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FGTAX Fidelity Advisor Mega Cap Stock Fund Class A	3.37%	3.72%	2.48%	1.86%	4.17%	4.61%	7.84%	12.91%	21.65%	16.21%	1.75%	3.75%
SPIAX Invesco S&P 500 Index A	0.91%	1.01%	1.08%	1.04%	1.07%	1.90%	1.26%	1.93%	2.59%	1.28%	1.28%	1.53%

Frequently Asked Questions

Can I hold both FGTAX and SPIAX in my portfolio?

With a correlation of 0.94, FGTAX and SPIAX 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, FGTAX or SPIAX?

SPIAX has higher volatility (2.82%) compared to FGTAX (2.71%). In terms of maximum drawdown, FGTAX dropped -53.07% vs SPIAX's -55.47%.

Which has better risk-adjusted returns?

FGTAX currently has the higher Sharpe Ratio (2.67 vs 2.47), 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.