FAI vs. MSTZ

Last updated Jul 11, 2026

FAI (First Trust Bloomberg Artificial Intelligence ETF) and MSTZ (T-REX 2X Inverse MSTR Daily Target ETF) are both exchange-traded funds - FAI is a Technology Equities fund tracking the Bloomberg Artificial Intelligence Index, while MSTZ is a Inverse Equities fund actively managed by REX. FAI is passively managed, while MSTZ is actively managed. Over the past year, FAI returned 49.94% vs 264.10% for MSTZ. At a correlation of -0.49, they often move in opposite directions. FAI charges 0.65%/yr vs 1.05%/yr for MSTZ.

Performance

FAI vs. MSTZ - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in First Trust Bloomberg Artificial Intelligence ETF (FAI) and T-REX 2X Inverse MSTR Daily Target ETF (MSTZ). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FAI achieves a 28.90% return, which is significantly higher than MSTZ's -26.97% return.

FAI

• 1D: -0.41%
• 1M: 0.70%
• 6M: 25.51%
• YTD: 28.90%
• 1Y: 49.94%
• 3Y*: —
• 5Y*: —
• 10Y*: —

MSTZ

• 1D: -1.53%
• 1M: 39.32%
• 6M: -19.19%
• YTD: -26.97%
• 1Y: 264.10%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

FAI vs. MSTZ - Yearly Performance Comparison

	2026 (YTD)	2025	2024
FAI First Trust Bloomberg Artificial Intelligence ETF	28.90%	33.37%	2.28%
MSTZ T-REX 2X Inverse MSTR Daily Target ETF	-26.97%	-38.95%	72.80%

Correlation

The correlation between FAI and MSTZ is -0.46, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.46
Correlation (All Time) Calculated using the full available price history since Nov 21, 2024	-0.49

Return for Risk

FAI vs. MSTZ — Risk / Return Rank

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

FAI

FAI Risk / Return Rank: 62
FAI Sharpe Ratio Rank: 69
FAI Sortino Ratio Rank: 60
FAI Omega Ratio Rank: 62
FAI Calmar Ratio Rank: 66
FAI Martin Ratio Rank: 56

MSTZ

MSTZ Risk / Return Rank: 60
MSTZ Sharpe Ratio Rank: 61
MSTZ Sortino Ratio Rank: 62
MSTZ Omega Ratio Rank: 63
MSTZ Calmar Ratio Rank: 71
MSTZ Martin Ratio Rank: 43

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.

FAI vs. MSTZ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for First Trust Bloomberg Artificial Intelligence ETF (FAI) and T-REX 2X Inverse MSTR Daily Target ETF (MSTZ). 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.

	FAI	MSTZ	Difference
Sharpe ratio: Return per unit of total volatility	1.78	1.64	+0.14
Sortino ratio: Return per unit of downside risk	2.27	2.34	-0.07
Omega ratio: Gain probability vs. loss probability	1.30	1.30	0.00
Calmar ratio: Return relative to maximum drawdown	2.64	2.86	-0.23
Martin ratio: Return relative to average drawdown	7.77	5.59	+2.18

FAI vs. MSTZ - Sharpe Ratio Comparison

The current FAI Sharpe Ratio is 1.78, which is comparable to the MSTZ Sharpe Ratio of 1.64. The chart below compares the historical Sharpe Ratios of FAI and MSTZ, 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

FAI vs. MSTZ - Drawdown Comparison

The maximum FAI drawdown since its inception was -27.82%, smaller than the maximum MSTZ drawdown of -99.38%. Use the drawdown chart below to compare losses from any high point for FAI and MSTZ.

Drawdown Indicators

	FAI	MSTZ	Difference
Max Drawdown Largest peak-to-trough decline	-27.82%	-99.38%	+71.56%
Max Drawdown (1Y) Largest decline over 1 year	-18.84%	-84.89%	+66.05%
Current Drawdown Current decline from peak	-8.44%	-97.51%	+89.07%
Average Drawdown Average peak-to-trough decline	-5.48%	-94.53%	+89.05%
Ulcer Index Depth and duration of drawdowns from previous peaks	6.38%	43.41%	-37.03%

Volatility

FAI vs. MSTZ - Volatility Comparison

The current volatility for First Trust Bloomberg Artificial Intelligence ETF (FAI) is 11.84%, while T-REX 2X Inverse MSTR Daily Target ETF (MSTZ) has a volatility of 56.46%. This indicates that FAI experiences smaller price fluctuations and is considered to be less risky than MSTZ based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FAI	MSTZ	Difference
Volatility (1M) Calculated over the trailing 1-month period	11.84%	56.46%	-44.62%
Volatility (6M) Calculated over the trailing 6-month period	23.56%	135.20%	-111.64%
Volatility (1Y) Calculated over the trailing 1-year period	27.99%	148.41%	-120.42%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	31.12%	171.17%	-140.05%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	31.12%	171.17%	-140.05%

FAI vs. MSTZ - Expense Ratio Comparison

FAI has a 0.65% expense ratio, which is lower than MSTZ's 1.05% expense ratio.

Dividends

FAI vs. MSTZ - Dividend Comparison

Neither FAI nor MSTZ has paid dividends to shareholders.

Position	TTM	2025	2024
FAI First Trust Bloomberg Artificial Intelligence ETF	0.00%	0.00%	0.04%
MSTZ T-REX 2X Inverse MSTR Daily Target ETF	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FAI and MSTZ in my portfolio?

FAI and MSTZ have a correlation of -0.46, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FAI or MSTZ?

MSTZ has higher volatility (56.46%) compared to FAI (11.84%). In terms of maximum drawdown, FAI dropped -27.82% vs MSTZ's -99.38%.

Which ETF is better, FAI or MSTZ?

On 1-year performance, MSTZ leads with 264.10% vs 49.94% for FAI. On fees, FAI is cheaper at 0.65% per year. On volatility, FAI has been the lower-risk option at 11.84%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, FAI or MSTZ?

Over the 1-year period, MSTZ has performed better with a 264.10% return vs 49.94%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, FAI or MSTZ?

FAI is cheaper with a 0.65% expense ratio, compared with 1.05% for MSTZ.

Which ETF pays a higher dividend yield, FAI or MSTZ?

FAI and MSTZ have nearly identical dividend yields, around 0.00%.

What is the main difference between FAI and MSTZ?

FAI is categorized as Technology Equities, while MSTZ is Inverse Equities. They also come from different issuers: First Trust and REX. Their fees differ too: 0.65% for FAI and 1.05% for MSTZ.

Which has better risk-adjusted returns?

FAI currently has the higher Sharpe Ratio (1.77 vs 1.64), 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.