ZMAY vs. UDEC
Compare and contrast key facts about Innovator Equity Defined Protection ETF - 1 Yr May (ZMAY) and Innovator U.S. Equity Ultra Buffer ETF - December (UDEC).
ZMAY and UDEC are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. ZMAY is an actively managed fund by Innovator. It was launched on May 1, 2025. UDEC is a passively managed fund by Innovator that tracks the performance of the S&P 500. It was launched on Nov 29, 2019.
Performance
ZMAY vs. UDEC - Performance Comparison
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ZMAY vs. UDEC - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
ZMAY Innovator Equity Defined Protection ETF - 1 Yr May | 0.70% | 4.67% |
UDEC Innovator U.S. Equity Ultra Buffer ETF - December | -2.02% | 15.27% |
Returns By Period
In the year-to-date period, ZMAY achieves a 0.70% return, which is significantly higher than UDEC's -2.02% return.
ZMAY
- 1D
- 0.38%
- 1M
- 0.17%
- YTD
- 0.70%
- 6M
- 2.00%
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
UDEC
- 1D
- 1.38%
- 1M
- -2.49%
- YTD
- -2.02%
- 6M
- 1.22%
- 1Y
- 13.24%
- 3Y*
- 10.86%
- 5Y*
- 6.01%
- 10Y*
- —
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ZMAY vs. UDEC - Expense Ratio Comparison
Both ZMAY and UDEC have an expense ratio of 0.79%.
Return for Risk
ZMAY vs. UDEC — Risk / Return Rank
ZMAY
UDEC
ZMAY vs. UDEC - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Innovator Equity Defined Protection ETF - 1 Yr May (ZMAY) and Innovator U.S. Equity Ultra Buffer ETF - December (UDEC). 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.
Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.
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Sharpe Ratios by Period
| ZMAY | UDEC | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | — | 1.52 | — |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | — | 0.85 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 3.96 | 0.78 | +3.18 |
Correlation
The correlation between ZMAY and UDEC is 0.72, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
ZMAY vs. UDEC - Dividend Comparison
Neither ZMAY nor UDEC has paid dividends to shareholders.
Drawdowns
ZMAY vs. UDEC - Drawdown Comparison
The maximum ZMAY drawdown since its inception was -0.39%, smaller than the maximum UDEC drawdown of -13.37%. Use the drawdown chart below to compare losses from any high point for ZMAY and UDEC.
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Drawdown Indicators
| ZMAY | UDEC | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -0.39% | -13.37% | +12.98% |
Max Drawdown (1Y)Largest decline over 1 year | — | -4.99% | — |
Max Drawdown (5Y)Largest decline over 5 years | — | -10.26% | — |
Current DrawdownCurrent decline from peak | 0.00% | -3.12% | +3.12% |
Average DrawdownAverage peak-to-trough decline | -0.05% | -2.21% | +2.16% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | — | 1.14% | — |
Volatility
ZMAY vs. UDEC - Volatility Comparison
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Volatility by Period
| ZMAY | UDEC | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | — | 2.54% | — |
Volatility (6M)Calculated over the trailing 6-month period | — | 5.15% | — |
Volatility (1Y)Calculated over the trailing 1-year period | 1.51% | 8.75% | -7.24% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 1.51% | 7.14% | -5.63% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 1.51% | 8.08% | -6.57% |