WTAI vs. FEPI

Last updated Apr 2, 2026

Compare and contrast key facts about WisdomTree Artificial Intelligence and Innovation Fund (WTAI) and REX FANG & Innovation Equity Premium Income ETF (FEPI).

WTAI and FEPI are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. WTAI is a passively managed fund by WisdomTree that tracks the performance of the WisdomTree Artificial Intelligence & Innovation Index. It was launched on Dec 7, 2021. FEPI is an actively managed fund by REX. It was launched on Oct 11, 2023.

Performance

WTAI vs. FEPI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in WisdomTree Artificial Intelligence and Innovation Fund (WTAI) and REX FANG & Innovation Equity Premium Income ETF (FEPI). The values are adjusted to include any dividend payments, if applicable.

WTAI vs. FEPI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
WTAI WisdomTree Artificial Intelligence and Innovation Fund	-0.62%	34.83%	6.53%	16.33%
FEPI REX FANG & Innovation Equity Premium Income ETF	-5.90%	18.33%	15.69%	11.70%

Returns By Period

In the year-to-date period, WTAI achieves a -0.62% return, which is significantly higher than FEPI's -5.90% return.

WTAI

• 1D: 2.59%
• 1M: -4.07%
• YTD: -0.62%
• 6M: 1.58%
• 1Y: 53.10%
• 3Y*: 19.04%
• 5Y*: —
• 10Y*: —

FEPI

• 1D: 1.39%
• 1M: -1.29%
• YTD: -5.90%
• 6M: -3.02%
• 1Y: 23.81%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

WTAI vs. FEPI - Expense Ratio Comparison

WTAI has a 0.45% expense ratio, which is lower than FEPI's 0.65% expense ratio.

FEPI

REX FANG & Innovation Equity Premium Income ETF

WTAI

WisdomTree Artificial Intelligence and Innovation Fund

Return for Risk

WTAI vs. FEPI — Risk / Return Rank

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

WTAI

WTAI Risk / Return Rank: 85
WTAI Sharpe Ratio Rank: 83
WTAI Sortino Ratio Rank: 83
WTAI Omega Ratio Rank: 79
WTAI Calmar Ratio Rank: 93
WTAI Martin Ratio Rank: 86

FEPI

FEPI Risk / Return Rank: 63
FEPI Sharpe Ratio Rank: 59
FEPI Sortino Ratio Rank: 61
FEPI Omega Ratio Rank: 62
FEPI Calmar Ratio Rank: 71
FEPI Martin Ratio Rank: 59

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.

WTAI vs. FEPI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for WisdomTree Artificial Intelligence and Innovation Fund (WTAI) and REX FANG & Innovation Equity Premium Income ETF (FEPI). 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.

	WTAI	FEPI	Difference
Sharpe ratio Return per unit of total volatility	1.67	1.09	+0.58
Sortino ratio Return per unit of downside risk	2.25	1.61	+0.64
Omega ratio Gain probability vs. loss probability	1.31	1.23	+0.07
Calmar ratio Return relative to maximum drawdown	3.58	1.91	+1.67
Martin ratio Return relative to average drawdown	10.64	6.04	+4.60
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WTAI vs. FEPI - Sharpe Ratio Comparison

The current WTAI Sharpe Ratio is 1.67, which is higher than the FEPI Sharpe Ratio of 1.09. The chart below compares the historical Sharpe Ratios of WTAI and FEPI, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	WTAI	FEPI	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.67	1.09	+0.58
Sharpe Ratio (All Time) Calculated using the full available price history	0.14	0.82	-0.69

Correlation

The correlation between WTAI and FEPI is 0.85, 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

WTAI vs. FEPI - Dividend Comparison

WTAI's dividend yield for the trailing twelve months is around 1.82%, less than FEPI's 28.20% yield.

	TTM	2025	2024	2023	2022
WTAI WisdomTree Artificial Intelligence and Innovation Fund	1.82%	1.81%	0.19%	0.24%	0.22%
FEPI REX FANG & Innovation Equity Premium Income ETF	28.20%	25.48%	27.18%	4.21%	0.00%

Drawdowns

WTAI vs. FEPI - Drawdown Comparison

The maximum WTAI drawdown since its inception was -45.92%, which is greater than FEPI's maximum drawdown of -23.56%. Use the drawdown chart below to compare losses from any high point for WTAI and FEPI.

Drawdown Indicators

	WTAI	FEPI	Difference
Max Drawdown Largest peak-to-trough decline	-45.92%	-23.56%	-22.36%
Max Drawdown (1Y) Largest decline over 1 year	-15.42%	-12.91%	-2.51%
Current Drawdown Current decline from peak	-8.36%	-8.14%	-0.22%
Average Drawdown Average peak-to-trough decline	-20.54%	-3.64%	-16.90%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.18%	4.07%	+1.11%

Volatility

WTAI vs. FEPI - Volatility Comparison

WisdomTree Artificial Intelligence and Innovation Fund (WTAI) has a higher volatility of 12.36% compared to REX FANG & Innovation Equity Premium Income ETF (FEPI) at 7.58%. This indicates that WTAI's price experiences larger fluctuations and is considered to be riskier than FEPI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WTAI	FEPI	Difference
Volatility (1M) Calculated over the trailing 1-month period	12.36%	7.58%	+4.78%
Volatility (6M) Calculated over the trailing 6-month period	21.81%	14.37%	+7.44%
Volatility (1Y) Calculated over the trailing 1-year period	31.94%	21.95%	+9.99%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	30.73%	19.40%	+11.33%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	30.73%	19.40%	+11.33%