KMAY vs. WTMU

Last updated Jun 4, 2026

KMAY (Innovator U.S. Small Cap Power Buffer ETF - May) and WTMU (WisdomTree Core Laddered Municipal ETF) are both exchange-traded funds - KMAY is a Defined Outcome fund actively managed by Innovator, while WTMU is a Municipal Bonds fund actively managed by WisdomTree. Both are actively managed. Over the past year, KMAY returned 15.29% vs 5.96% for WTMU. At a 0.12 correlation, their price movements are largely independent. KMAY charges 0.79%/yr vs 0.25%/yr for WTMU.

Performance

KMAY vs. WTMU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Innovator U.S. Small Cap Power Buffer ETF - May (KMAY) and WisdomTree Core Laddered Municipal ETF (WTMU). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, KMAY achieves a 4.86% return, which is significantly higher than WTMU's 0.45% return.

KMAY

• 1D: -0.66%
• 1M: 1.80%
• YTD: 4.86%
• 6M: 5.68%
• 1Y: 15.29%
• 3Y*: —
• 5Y*: —
• 10Y*: —

WTMU

• 1D: 0.12%
• 1M: 0.43%
• YTD: 0.45%
• 6M: 0.94%
• 1Y: 5.96%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

KMAY vs. WTMU - Yearly Performance Comparison

	2026 (YTD)	2025
KMAY Innovator U.S. Small Cap Power Buffer ETF - May	4.86%	13.83%
WTMU WisdomTree Core Laddered Municipal ETF	0.45%	5.79%

Correlation

The correlation between KMAY and WTMU is 0.15, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.15
Correlation (All Time) Calculated using the full available price history since May 2, 2025	0.12

Return for Risk

KMAY vs. WTMU — Risk / Return Rank

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

KMAY

KMAY Risk / Return Rank: 87
KMAY Sharpe Ratio Rank: 78
KMAY Sortino Ratio Rank: 86
KMAY Omega Ratio Rank: 85
KMAY Calmar Ratio Rank: 93
KMAY Martin Ratio Rank: 94

WTMU

WTMU Risk / Return Rank: 70
WTMU Sharpe Ratio Rank: 83
WTMU Sortino Ratio Rank: 87
WTMU Omega Ratio Rank: 92
WTMU Calmar Ratio Rank: 45
WTMU Martin Ratio Rank: 40

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.

KMAY vs. WTMU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Innovator U.S. Small Cap Power Buffer ETF - May (KMAY) and WisdomTree Core Laddered Municipal ETF (WTMU). 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.

	KMAY	WTMU	Difference
Sharpe ratio: Return per unit of total volatility	2.51	2.69	-0.18
Sortino ratio: Return per unit of downside risk	3.83	3.92	-0.10
Omega ratio: Gain probability vs. loss probability	1.51	1.61	-0.10
Calmar ratio: Return relative to maximum drawdown	6.46	2.20	+4.26
Martin ratio: Return relative to average drawdown	27.25	6.25	+21.00
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

KMAY vs. WTMU - Sharpe Ratio Comparison

The current KMAY Sharpe Ratio is 2.51, which is comparable to the WTMU Sharpe Ratio of 2.69. The chart below compares the historical Sharpe Ratios of KMAY and WTMU, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	KMAY	WTMU	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.51	2.69	-0.18
Sharpe Ratio (All Time) Calculated using the full available price history	2.68	1.01	+1.67

Drawdowns

KMAY vs. WTMU - Drawdown Comparison

The maximum KMAY drawdown since its inception was -2.38%, smaller than the maximum WTMU drawdown of -4.24%. Use the drawdown chart below to compare losses from any high point for KMAY and WTMU.

Drawdown Indicators

	KMAY	WTMU	Difference
Max Drawdown Largest peak-to-trough decline	-2.38%	-4.24%	+1.86%
Max Drawdown (1Y) Largest decline over 1 year	-2.38%	-2.72%	+0.34%
Current Drawdown Current decline from peak	-0.69%	-1.52%	+0.83%
Average Drawdown Average peak-to-trough decline	-0.35%	-0.64%	+0.29%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.56%	0.96%	-0.40%

Volatility

KMAY vs. WTMU - Volatility Comparison

Innovator U.S. Small Cap Power Buffer ETF - May (KMAY) has a higher volatility of 2.89% compared to WisdomTree Core Laddered Municipal ETF (WTMU) at 0.74%. This indicates that KMAY's price experiences larger fluctuations and is considered to be riskier than WTMU based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	KMAY	WTMU	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.89%	0.74%	+2.15%
Volatility (6M) Calculated over the trailing 6-month period	3.99%	1.77%	+2.22%
Volatility (1Y) Calculated over the trailing 1-year period	6.16%	2.22%	+3.94%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.65%	4.76%	+1.89%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	6.65%	4.76%	+1.89%

KMAY vs. WTMU - Expense Ratio Comparison

KMAY has a 0.79% expense ratio, which is higher than WTMU's 0.25% expense ratio.

Dividends

KMAY vs. WTMU - Dividend Comparison

KMAY has not paid dividends to shareholders, while WTMU's dividend yield for the trailing twelve months is around 2.98%.

Position	TTM	2025
KMAY Innovator U.S. Small Cap Power Buffer ETF - May	0.00%	0.00%
WTMU WisdomTree Core Laddered Municipal ETF	2.98%	2.15%

Frequently Asked Questions

Can I hold both KMAY and WTMU in my portfolio?

KMAY and WTMU have a correlation of 0.15, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, KMAY or WTMU?

KMAY has higher volatility (2.89%) compared to WTMU (0.74%). In terms of maximum drawdown, KMAY dropped -2.38% vs WTMU's -4.24%.

Which ETF is better, KMAY or WTMU?

On 1-year performance, KMAY leads with 15.29% vs 5.96% for WTMU. On fees, WTMU is cheaper at 0.25% per year. On volatility, WTMU has been the lower-risk option at 0.74%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, KMAY or WTMU?

Over the 1-year period, KMAY has performed better with a 15.29% return vs 5.96%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, KMAY or WTMU?

WTMU is cheaper with a 0.25% expense ratio, compared with 0.79% for KMAY.

Which ETF pays a higher dividend yield, KMAY or WTMU?

WTMU has the higher dividend yield at 2.98%, compared with 0.00% for KMAY.

What is the main difference between KMAY and WTMU?

KMAY is categorized as Defined Outcome, while WTMU is Municipal Bonds. They also come from different issuers: Innovator and WisdomTree. Their fees differ too: 0.79% for KMAY and 0.25% for WTMU.

Which has better risk-adjusted returns?

WTMU currently has the higher Sharpe Ratio (2.69 vs 2.51), 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.