FXAIX vs. TCAI

Last updated Jun 9, 2026

FXAIX (Fidelity 500 Index Fund) and TCAI (Tortoise AI Infrastructure ETF) are both funds - FXAIX is a S&P 500 fund tracking the S&P 500 Index, while TCAI is a Technology Equities fund actively managed by Tortoise. FXAIX is passively managed, while TCAI is actively managed. A 0.68 correlation means they provide meaningful diversification when combined. FXAIX charges 0.02%/yr vs 0.65%/yr for TCAI.

Performance

FXAIX vs. TCAI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity 500 Index Fund (FXAIX) and Tortoise AI Infrastructure ETF (TCAI). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FXAIX achieves a 8.42% return, which is significantly lower than TCAI's 74.50% return.

FXAIX

• 1D: -2.63%
• 1M: -0.08%
• YTD: 8.42%
• 6M: 8.48%
• 1Y: 24.54%
• 3Y*: 21.52%
• 5Y*: 13.40%
• 10Y*: 15.25%

TCAI

• 1D: 1.87%
• 1M: 6.30%
• YTD: 74.50%
• 6M: 65.04%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

FXAIX vs. TCAI - Yearly Performance Comparison

	2026 (YTD)	2025
FXAIX Fidelity 500 Index Fund	8.42%	8.71%
TCAI Tortoise AI Infrastructure ETF	74.50%	17.27%

Correlation

The correlation between FXAIX and TCAI is 0.68, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since Aug 5, 2025	0.68

Return for Risk

FXAIX vs. TCAI — Risk / Return Rank

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

FXAIX

FXAIX Risk / Return Rank: 59
FXAIX Sharpe Ratio Rank: 56
FXAIX Sortino Ratio Rank: 49
FXAIX Omega Ratio Rank: 53
FXAIX Calmar Ratio Rank: 62
FXAIX 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.

FXAIX vs. TCAI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity 500 Index Fund (FXAIX) and Tortoise AI Infrastructure ETF (TCAI). 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.

	FXAIX	TCAI	Difference
Sharpe ratio: Return per unit of total volatility	2.13	—	—
Sortino ratio: Return per unit of downside risk	2.87	—	—
Omega ratio: Gain probability vs. loss probability	1.39	—	—
Calmar ratio: Return relative to maximum drawdown	2.92	—	—
Martin ratio: Return relative to average drawdown	13.57	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	FXAIX	TCAI	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.13	—	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.79	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.85	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.81	3.72	-2.91

Drawdowns

FXAIX vs. TCAI - Drawdown Comparison

The maximum FXAIX drawdown since its inception was -33.79%, which is greater than TCAI's maximum drawdown of -15.80%. Use the drawdown chart below to compare losses from any high point for FXAIX and TCAI.

Drawdown Indicators

	FXAIX	TCAI	Difference
Max Drawdown Largest peak-to-trough decline	-33.79%	-15.80%	-17.99%
Max Drawdown (1Y) Largest decline over 1 year	-8.89%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-18.76%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-24.50%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-33.79%	—	—
Current Drawdown Current decline from peak	-2.94%	-8.22%	+5.28%
Average Drawdown Average peak-to-trough decline	-3.79%	-3.48%	-0.31%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.91%	—	—

Volatility

Volatility by Period

	FXAIX	TCAI	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.81%	—	—
Volatility (6M) Calculated over the trailing 6-month period	9.41%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	12.19%	36.74%	-24.55%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.95%	36.74%	-19.79%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.08%	36.74%	-18.66%

FXAIX vs. TCAI - Expense Ratio Comparison

FXAIX has a 0.02% expense ratio, which is lower than TCAI's 0.65% expense ratio.

Dividends

FXAIX vs. TCAI - Dividend Comparison

FXAIX's dividend yield for the trailing twelve months is around 1.06%, more than TCAI's 0.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FXAIX Fidelity 500 Index Fund	1.06%	1.11%	1.25%	1.45%	1.69%	1.22%	1.60%	2.06%	2.72%	1.97%	2.52%	2.83%
TCAI Tortoise AI Infrastructure ETF	0.03%	0.05%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FXAIX and TCAI in my portfolio?

FXAIX and TCAI have a correlation of 0.68, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.