KBUF vs. IWMY

Last updated Aug 4, 2026

KBUF (KraneShares 90% KWEB Defined Outcome January 2026 ETF) and IWMY (Defiance R2000 Weekly Distribution ETF) are both Options Trading funds. Both are actively managed. Over the past year, KBUF returned -3.49% vs 21.52% for IWMY. Their 0.33 correlation means their historical movements had little consistent relationship. KBUF charges 0.95%/yr vs 1.05%/yr for IWMY.

Performance

KBUF vs. IWMY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in KraneShares 90% KWEB Defined Outcome January 2026 ETF (KBUF) and Defiance R2000 Weekly Distribution ETF (IWMY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, KBUF achieves a -9.39% return, which is significantly lower than IWMY's 15.27% return.

KBUF

• 1D: 0.45%
• 1M: 6.29%
• 6M: -11.08%
• YTD: -9.39%
• 1Y: -3.49%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 9.02%

IWMY

• 1D: 1.69%
• 1M: -0.31%
• 6M: 10.17%
• YTD: 15.27%
• 1Y: 21.52%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 15.16%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
IWMY Defiance R2000 Weekly Distribution ETF	$647.71K	$735.48K	$1.03M
KBUF KraneShares 90% KWEB Defined Outcome January 2026 ETF	$6.79K	$35.72K	$167.86K

KBUF vs. IWMY - Yearly Performance Comparison

	2026 (YTD)	2025	2024
KBUF KraneShares 90% KWEB Defined Outcome January 2026 ETF	-9.39%	18.04%	15.85%
IWMY Defiance R2000 Weekly Distribution ETF	15.27%	10.18%	7.54%

Correlation

The correlation between KBUF and IWMY is 0.38, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.38
Correlation (All Time) Calculated using the full available price history since Feb 8, 2024	0.33

Return for Risk

KBUF vs. IWMY — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

KBUF

KBUF Risk / Return Rank: 7
KBUF Sharpe Ratio Rank: 7
KBUF Sortino Ratio Rank: 7
KBUF Omega Ratio Rank: 7
KBUF Calmar Ratio Rank: 8
KBUF Martin Ratio Rank: 8

IWMY

IWMY Risk / Return Rank: 51
IWMY Sharpe Ratio Rank: 53
IWMY Sortino Ratio Rank: 50
IWMY Omega Ratio Rank: 49
IWMY Calmar Ratio Rank: 51
IWMY Martin Ratio Rank: 51

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

KBUF vs. IWMY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for KraneShares 90% KWEB Defined Outcome January 2026 ETF (KBUF) and Defiance R2000 Weekly Distribution ETF (IWMY). 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.

	KBUF	IWMY	Difference
Sharpe ratio: Return per unit of total volatility	-0.26	1.33	-1.59
Sortino ratio: Return per unit of downside risk	-0.28	1.85	-2.12
Omega ratio: Gain probability vs. loss probability	0.97	1.23	-0.27
Calmar ratio: Return relative to maximum drawdown	-0.17	1.87	-2.03
Martin ratio: Return relative to average drawdown	-0.33	6.07	-6.40

KBUF vs. IWMY - Sharpe Ratio Comparison

The current KBUF Sharpe Ratio is -0.26, which is lower than the IWMY Sharpe Ratio of 1.33. The chart below compares the historical Sharpe Ratios of KBUF and IWMY, 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

KBUF vs. IWMY - Drawdown Comparison

The maximum KBUF drawdown since its inception was -21.14%, which is greater than IWMY's maximum drawdown of -18.72%. Use the drawdown chart below to compare losses from any high point for KBUF and IWMY.

Drawdown Indicators

	KBUF	IWMY	Difference
Max Drawdown Largest peak-to-trough decline	-21.14%	-18.72%	-2.42%
Max Drawdown (1Y) Largest decline over 1 year	-21.14%	-11.57%	-9.57%
Current Drawdown Current decline from peak	-14.74%	-0.99%	-13.75%
Average Drawdown Average peak-to-trough decline	-5.07%	-2.88%	-2.19%
Ulcer Index Depth and duration of drawdowns from previous peaks	10.46%	3.56%	+6.90%

Volatility

KBUF vs. IWMY - Volatility Comparison

The current volatility for KraneShares 90% KWEB Defined Outcome January 2026 ETF (KBUF) is 3.46%, while Defiance R2000 Weekly Distribution ETF (IWMY) has a volatility of 3.81%. This indicates that KBUF experiences smaller price fluctuations and is considered to be less risky than IWMY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	KBUF	IWMY	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.46%	3.81%	-0.35%
Volatility (6M) Calculated over the trailing 6-month period	10.53%	13.49%	-2.96%
Volatility (1Y) Calculated over the trailing 1-year period	13.44%	16.34%	-2.90%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.18%	15.80%	-1.62%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	14.18%	15.80%	-1.62%

KBUF vs. IWMY - Expense Ratio Comparison

KBUF has a 0.95% expense ratio, which is lower than IWMY's 1.05% expense ratio.

Dividends

KBUF vs. IWMY - Dividend Comparison

KBUF's dividend yield for the trailing twelve months is around 8.29%, less than IWMY's 41.16% yield.

Position	TTM	2025	2024	2023
IWMY Defiance R2000 Weekly Distribution ETF	41.16%	63.33%	107.92%	11.34%
KBUF KraneShares 90% KWEB Defined Outcome January 2026 ETF	8.29%	7.51%	3.53%	0.00%

Frequently Asked Questions

Can I hold both KBUF and IWMY in my portfolio?

KBUF and IWMY have a correlation of 0.38, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, KBUF or IWMY?

IWMY has higher volatility (3.81%) compared to KBUF (3.46%). In terms of maximum drawdown, KBUF dropped -21.14% vs IWMY's -18.72%.

Which ETF is better, KBUF or IWMY?

On 1-year performance, IWMY leads with 21.52% vs -3.49% for KBUF. On fees, KBUF is cheaper at 0.95% per year. On volatility, KBUF has been the lower-risk option at 3.46%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, KBUF or IWMY?

Over the 1-year period, IWMY has performed better with a 21.52% return vs -3.49%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, KBUF or IWMY?

KBUF is cheaper with a 0.95% expense ratio, compared with 1.05% for IWMY.

Which ETF pays a higher dividend yield, KBUF or IWMY?

IWMY has the higher dividend yield at 41.16%, compared with 8.29% for KBUF.

What is the main difference between KBUF and IWMY?

They also come from different issuers: KraneShares and Defiance. Their fees differ too: 0.95% for KBUF and 1.05% for IWMY.

Which has better risk-adjusted returns?

IWMY currently has the higher Sharpe Ratio (1.33 vs -0.26), 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.