KFEB vs. MSTZ

Last updated Jul 14, 2026

KFEB (Innovator U.S. Small Cap Power Buffer ETF - February) and MSTZ (T-REX 2X Inverse MSTR Daily Target ETF) are both exchange-traded funds - KFEB is a Defined Outcome fund actively managed by Innovator, while MSTZ is a Inverse Equities fund actively managed by REX. Both are actively managed. Over the past year, KFEB returned 22.21% vs 282.56% for MSTZ. At a correlation of -0.48, they often move in opposite directions. KFEB charges 0.79%/yr vs 1.05%/yr for MSTZ.

Performance

KFEB vs. MSTZ - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Innovator U.S. Small Cap Power Buffer ETF - February (KFEB) 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, KFEB achieves a 13.34% return, which is significantly higher than MSTZ's -23.27% return.

KFEB

• 1D: -0.32%
• 1M: 0.85%
• 6M: 7.72%
• YTD: 13.34%
• 1Y: 22.21%
• 3Y*: —
• 5Y*: —
• 10Y*: —

MSTZ

• 1D: 5.07%
• 1M: 46.38%
• 6M: -9.68%
• YTD: -23.27%
• 1Y: 282.56%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

KFEB vs. MSTZ - Yearly Performance Comparison

	2026 (YTD)	2025
KFEB Innovator U.S. Small Cap Power Buffer ETF - February	13.34%	9.19%
MSTZ T-REX 2X Inverse MSTR Daily Target ETF	-23.27%	-0.69%

Correlation

The correlation between KFEB and MSTZ is -0.50, 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	-0.50
Correlation (All Time) Calculated using the full available price history since Feb 3, 2025	-0.48

Return for Risk

KFEB vs. MSTZ — Risk / Return Rank

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

KFEB

KFEB Risk / Return Rank: 83
KFEB Sharpe Ratio Rank: 81
KFEB Sortino Ratio Rank: 84
KFEB Omega Ratio Rank: 77
KFEB Calmar Ratio Rank: 86
KFEB Martin Ratio Rank: 86

MSTZ

MSTZ Risk / Return Rank: 68
MSTZ Sharpe Ratio Rank: 76
MSTZ Sortino Ratio Rank: 67
MSTZ Omega Ratio Rank: 68
MSTZ Calmar Ratio Rank: 80
MSTZ Martin Ratio Rank: 49

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.

KFEB vs. MSTZ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Innovator U.S. Small Cap Power Buffer ETF - February (KFEB) 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.

	KFEB	MSTZ	Difference
Sharpe ratio: Return per unit of total volatility	2.05	1.92	+0.13
Sortino ratio: Return per unit of downside risk	2.99	2.45	+0.54
Omega ratio: Gain probability vs. loss probability	1.36	1.32	+0.04
Calmar ratio: Return relative to maximum drawdown	3.85	3.35	+0.49
Martin ratio: Return relative to average drawdown	14.04	6.53	+7.51

KFEB vs. MSTZ - Sharpe Ratio Comparison

The current KFEB Sharpe Ratio is 2.05, which is comparable to the MSTZ Sharpe Ratio of 1.92. The chart below compares the historical Sharpe Ratios of KFEB 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

KFEB vs. MSTZ - Drawdown Comparison

The maximum KFEB drawdown since its inception was -14.16%, smaller than the maximum MSTZ drawdown of -99.38%. Use the drawdown chart below to compare losses from any high point for KFEB and MSTZ.

Drawdown Indicators

	KFEB	MSTZ	Difference
Max Drawdown Largest peak-to-trough decline	-14.16%	-99.38%	+85.22%
Max Drawdown (1Y) Largest decline over 1 year	-5.80%	-84.89%	+79.09%
Current Drawdown Current decline from peak	-0.64%	-97.39%	+96.75%
Average Drawdown Average peak-to-trough decline	-2.18%	-94.53%	+92.35%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.59%	43.51%	-41.92%

Volatility

KFEB vs. MSTZ - Volatility Comparison

The current volatility for Innovator U.S. Small Cap Power Buffer ETF - February (KFEB) is 1.93%, while T-REX 2X Inverse MSTR Daily Target ETF (MSTZ) has a volatility of 56.56%. This indicates that KFEB 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

	KFEB	MSTZ	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.93%	56.56%	-54.63%
Volatility (6M) Calculated over the trailing 6-month period	7.36%	135.11%	-127.75%
Volatility (1Y) Calculated over the trailing 1-year period	10.92%	148.53%	-137.61%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	12.95%	171.02%	-158.07%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	12.95%	171.02%	-158.07%

KFEB vs. MSTZ - Expense Ratio Comparison

KFEB has a 0.79% expense ratio, which is lower than MSTZ's 1.05% expense ratio.

Dividends

KFEB vs. MSTZ - Dividend Comparison

Neither KFEB nor MSTZ has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both KFEB and MSTZ in my portfolio?

KFEB and MSTZ have a correlation of -0.50, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, KFEB or MSTZ?

MSTZ has higher volatility (56.56%) compared to KFEB (1.93%). In terms of maximum drawdown, KFEB dropped -14.16% vs MSTZ's -99.38%.

Which ETF is better, KFEB or MSTZ?

On 1-year performance, MSTZ leads with 282.56% vs 22.21% for KFEB. On fees, KFEB is cheaper at 0.79% per year. On volatility, KFEB has been the lower-risk option at 1.93%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, KFEB or MSTZ?

Over the 1-year period, MSTZ has performed better with a 282.56% return vs 22.21%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, KFEB or MSTZ?

KFEB is cheaper with a 0.79% expense ratio, compared with 1.05% for MSTZ.

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

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

What is the main difference between KFEB and MSTZ?

KFEB is categorized as Defined Outcome, while MSTZ is Inverse Equities. They also come from different issuers: Innovator and REX. Their fees differ too: 0.79% for KFEB and 1.05% for MSTZ.

Which has better risk-adjusted returns?

KFEB currently has the higher Sharpe Ratio (2.05 vs 1.92), 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.