GOOX vs. FXAIX

Last updated Jun 23, 2026

GOOX (T-Rex 2X Long Alphabet Daily Target ETF) and FXAIX (Fidelity 500 Index Fund) are both funds - GOOX is a Leveraged Bonds fund actively managed by T-Rex, while FXAIX is a S&P 500 fund tracking the S&P 500 Index. GOOX is actively managed, while FXAIX is passively managed. Over the past year, GOOX returned 257.68% vs 27.18% for FXAIX. A 0.59 correlation means they provide meaningful diversification when combined. GOOX charges 1.05%/yr vs 0.02%/yr for FXAIX.

Performance

GOOX vs. FXAIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in T-Rex 2X Long Alphabet Daily Target ETF (GOOX) and Fidelity 500 Index Fund (FXAIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GOOX achieves a 12.48% return, which is significantly higher than FXAIX's 10.19% return.

GOOX

• 1D: -10.17%
• 1M: -16.87%
• YTD: 12.48%
• 6M: 13.50%
• 1Y: 257.68%
• 3Y*: —
• 5Y*: —
• 10Y*: —

FXAIX

• 1D: 1.09%
• 1M: 0.47%
• YTD: 10.19%
• 6M: 9.68%
• 1Y: 27.18%
• 3Y*: 20.98%
• 5Y*: 14.10%
• 10Y*: 15.58%

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

GOOX vs. FXAIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024
GOOX T-Rex 2X Long Alphabet Daily Target ETF	12.48%	121.41%	44.31%
FXAIX Fidelity 500 Index Fund	10.19%	17.84%	24.62%

Correlation

The correlation between GOOX and FXAIX is 0.58, 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	0.58
Correlation (All Time) Calculated using the full available price history since Jan 11, 2024	0.59

The correlation between GOOX and FXAIX has been stable across timeframes, ranging from 0.58 to 0.59 - a consistent structural relationship.

Return for Risk

GOOX vs. FXAIX — Risk / Return Rank

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

GOOX

GOOX Risk / Return Rank: 93
GOOX Sharpe Ratio Rank: 97
GOOX Sortino Ratio Rank: 94
GOOX Omega Ratio Rank: 90
GOOX Calmar Ratio Rank: 94
GOOX Martin Ratio Rank: 92

FXAIX

FXAIX Risk / Return Rank: 66
FXAIX Sharpe Ratio Rank: 64
FXAIX Sortino Ratio Rank: 59
FXAIX Omega Ratio Rank: 61
FXAIX Calmar Ratio Rank: 68
FXAIX Martin Ratio Rank: 79

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.

GOOX vs. FXAIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T-Rex 2X Long Alphabet Daily Target ETF (GOOX) and Fidelity 500 Index Fund (FXAIX). 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.

	GOOX	FXAIX	Difference
Sharpe ratio: Return per unit of total volatility	4.44	2.17	+2.28
Sortino ratio: Return per unit of downside risk	4.55	2.93	+1.63
Omega ratio: Gain probability vs. loss probability	1.55	1.39	+0.16
Calmar ratio: Return relative to maximum drawdown	6.66	3.04	+3.62
Martin ratio: Return relative to average drawdown	21.48	13.75	+7.73

GOOX vs. FXAIX - Sharpe Ratio Comparison

The current GOOX Sharpe Ratio is 4.44, which is higher than the FXAIX Sharpe Ratio of 2.17. The chart below compares the historical Sharpe Ratios of GOOX and FXAIX, 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

GOOX vs. FXAIX - Drawdown Comparison

The maximum GOOX drawdown since its inception was -52.46%, which is greater than FXAIX's maximum drawdown of -33.79%. Use the drawdown chart below to compare losses from any high point for GOOX and FXAIX.

Drawdown Indicators

	GOOX	FXAIX	Difference
Max Drawdown Largest peak-to-trough decline	-52.46%	-33.79%	-18.67%
Max Drawdown (1Y) Largest decline over 1 year	-38.98%	-8.89%	-30.09%
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	-25.24%	-1.36%	-23.88%
Average Drawdown Average peak-to-trough decline	-17.05%	-3.79%	-13.26%
Ulcer Index Depth and duration of drawdowns from previous peaks	12.06%	1.96%	+10.10%

Volatility

GOOX vs. FXAIX - Volatility Comparison

T-Rex 2X Long Alphabet Daily Target ETF (GOOX) has a higher volatility of 19.22% compared to Fidelity 500 Index Fund (FXAIX) at 4.77%. This indicates that GOOX's price experiences larger fluctuations and is considered to be riskier than FXAIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GOOX	FXAIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	19.22%	4.77%	+14.45%
Volatility (6M) Calculated over the trailing 6-month period	41.81%	9.91%	+31.90%
Volatility (1Y) Calculated over the trailing 1-year period	58.51%	12.47%	+46.04%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	60.61%	17.01%	+43.60%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	60.61%	18.11%	+42.50%

GOOX vs. FXAIX - Expense Ratio Comparison

GOOX has a 1.05% expense ratio, which is higher than FXAIX's 0.02% expense ratio.

Dividends

GOOX vs. FXAIX - Dividend Comparison

GOOX's dividend yield for the trailing twelve months is around 0.27%, less than FXAIX's 1.04% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FXAIX Fidelity 500 Index Fund	1.04%	1.11%	1.25%	1.45%	1.69%	1.22%	1.60%	2.06%	2.72%	1.97%	2.52%	2.83%
GOOX T-Rex 2X Long Alphabet Daily Target ETF	0.27%	0.30%	16.78%	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 GOOX and FXAIX in my portfolio?

GOOX and FXAIX have a correlation of 0.58, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, GOOX or FXAIX?

GOOX has higher volatility (19.22%) compared to FXAIX (4.77%). In terms of maximum drawdown, GOOX dropped -52.46% vs FXAIX's -33.79%.

Which has better risk-adjusted returns?

GOOX currently has the higher Sharpe Ratio (4.44 vs 2.17), 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.