MSTZ vs. FIAT

Last updated Jul 16, 2026

MSTZ (T-REX 2X Inverse MSTR Daily Target ETF) and FIAT (YieldMax Short COIN Option Income Strategy ETF) are both exchange-traded funds - MSTZ is a Inverse Equities fund actively managed by REX, while FIAT is a Derivative Income fund actively managed by YieldMax. Both are actively managed. Over the past year, MSTZ returned 252.57% vs 50.76% for FIAT. A 0.71 correlation means they provide meaningful diversification when combined. MSTZ charges 1.05%/yr vs 0.99%/yr for FIAT.

Performance

MSTZ vs. FIAT - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in T-REX 2X Inverse MSTR Daily Target ETF (MSTZ) and YieldMax Short COIN Option Income Strategy ETF (FIAT). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MSTZ achieves a -31.95% return, which is significantly lower than FIAT's 9.57% return.

MSTZ

• 1D: -0.09%
• 1M: 46.79%
• 6M: 0.09%
• YTD: -31.95%
• 1Y: 252.57%
• 3Y*: —
• 5Y*: —
• 10Y*: —

FIAT

• 1D: -2.47%
• 1M: -0.66%
• 6M: 20.88%
• YTD: 9.57%
• 1Y: 50.76%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MSTZ vs. FIAT - Yearly Performance Comparison

	2026 (YTD)	2025	2024
MSTZ T-REX 2X Inverse MSTR Daily Target ETF	-31.95%	-38.95%	-94.43%
FIAT YieldMax Short COIN Option Income Strategy ETF	9.57%	-24.17%	-41.47%

Correlation

The correlation between MSTZ and FIAT is 0.77, 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	0.77
Correlation (All Time) Calculated using the full available price history since Sep 18, 2024	0.71

The correlation between MSTZ and FIAT has been stable across timeframes, ranging from 0.71 to 0.77 - a consistent structural relationship.

Return for Risk

MSTZ vs. FIAT — Risk / Return Rank

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

MSTZ

MSTZ Risk / Return Rank: 61
MSTZ Sharpe Ratio Rank: 65
MSTZ Sortino Ratio Rank: 62
MSTZ Omega Ratio Rank: 64
MSTZ Calmar Ratio Rank: 73
MSTZ Martin Ratio Rank: 43

FIAT

FIAT Risk / Return Rank: 32
FIAT Sharpe Ratio Rank: 32
FIAT Sortino Ratio Rank: 32
FIAT Omega Ratio Rank: 34
FIAT Calmar Ratio Rank: 35
FIAT Martin Ratio Rank: 28

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.

MSTZ vs. FIAT - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T-REX 2X Inverse MSTR Daily Target ETF (MSTZ) and YieldMax Short COIN Option Income Strategy ETF (FIAT). 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.

	MSTZ	FIAT	Difference
Sharpe ratio: Return per unit of total volatility	1.71	0.97	+0.74
Sortino ratio: Return per unit of downside risk	2.37	1.46	+0.91
Omega ratio: Gain probability vs. loss probability	1.31	1.20	+0.11
Calmar ratio: Return relative to maximum drawdown	3.00	1.49	+1.51
Martin ratio: Return relative to average drawdown	5.79	3.19	+2.60

MSTZ vs. FIAT - Sharpe Ratio Comparison

The current MSTZ Sharpe Ratio is 1.71, which is higher than the FIAT Sharpe Ratio of 0.97. The chart below compares the historical Sharpe Ratios of MSTZ and FIAT, 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

MSTZ vs. FIAT - Drawdown Comparison

The maximum MSTZ drawdown since its inception was -99.38%, which is greater than FIAT's maximum drawdown of -70.50%. Use the drawdown chart below to compare losses from any high point for MSTZ and FIAT.

Drawdown Indicators

	MSTZ	FIAT	Difference
Max Drawdown Largest peak-to-trough decline	-99.38%	-70.50%	-28.88%
Max Drawdown (1Y) Largest decline over 1 year	-84.89%	-34.22%	-50.67%
Current Drawdown Current decline from peak	-97.68%	-52.77%	-44.91%
Average Drawdown Average peak-to-trough decline	-94.55%	-45.55%	-49.00%
Ulcer Index Depth and duration of drawdowns from previous peaks	43.81%	15.96%	+27.85%

Volatility

MSTZ vs. FIAT - Volatility Comparison

T-REX 2X Inverse MSTR Daily Target ETF (MSTZ) has a higher volatility of 56.66% compared to YieldMax Short COIN Option Income Strategy ETF (FIAT) at 14.31%. This indicates that MSTZ's price experiences larger fluctuations and is considered to be riskier than FIAT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MSTZ	FIAT	Difference
Volatility (1M) Calculated over the trailing 1-month period	56.66%	14.31%	+42.35%
Volatility (6M) Calculated over the trailing 6-month period	135.05%	43.75%	+91.30%
Volatility (1Y) Calculated over the trailing 1-year period	148.51%	52.63%	+95.88%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	170.85%	59.97%	+110.88%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	170.85%	59.97%	+110.88%

MSTZ vs. FIAT - Expense Ratio Comparison

MSTZ has a 1.05% expense ratio, which is higher than FIAT's 0.99% expense ratio.

Dividends

MSTZ vs. FIAT - Dividend Comparison

MSTZ has not paid dividends to shareholders, while FIAT's dividend yield for the trailing twelve months is around 109.37%.

Position	TTM	2025	2024
FIAT YieldMax Short COIN Option Income Strategy ETF	109.37%	178.11%	70.99%
MSTZ T-REX 2X Inverse MSTR Daily Target ETF	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both MSTZ and FIAT in my portfolio?

MSTZ and FIAT have a correlation of 0.77, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MSTZ or FIAT?

MSTZ has higher volatility (56.66%) compared to FIAT (14.31%). In terms of maximum drawdown, MSTZ dropped -99.38% vs FIAT's -70.50%.

Which ETF is better, MSTZ or FIAT?

On 1-year performance, MSTZ leads with 252.57% vs 50.76% for FIAT. On fees, FIAT is cheaper at 0.99% per year. On volatility, FIAT has been the lower-risk option at 14.31%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, MSTZ or FIAT?

Over the 1-year period, MSTZ has performed better with a 252.57% return vs 50.76%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, MSTZ or FIAT?

FIAT is cheaper with a 0.99% expense ratio, compared with 1.05% for MSTZ.

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

FIAT has the higher dividend yield at 109.37%, compared with 0.00% for MSTZ.

What is the main difference between MSTZ and FIAT?

MSTZ is categorized as Inverse Equities, while FIAT is Derivative Income. They also come from different issuers: REX and YieldMax. Their fees differ too: 1.05% for MSTZ and 0.99% for FIAT.

Which has better risk-adjusted returns?

MSTZ currently has the higher Sharpe Ratio (1.71 vs 0.97), 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.