IWMY vs. VOO

Last updated Jul 15, 2026

IWMY (Defiance R2000 Weekly Distribution ETF) and VOO (Vanguard S&P 500 ETF) are both exchange-traded funds - IWMY is a Options Trading fund actively managed by Defiance, while VOO is a S&P 500 fund tracking the S&P 500 Index. IWMY is actively managed, while VOO is passively managed. Over the past year, IWMY returned 17.50% vs 21.75% for VOO. A 0.75 correlation means they provide meaningful diversification when combined. IWMY charges 1.05%/yr vs 0.03%/yr for VOO.

Performance

IWMY vs. VOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Defiance R2000 Weekly Distribution ETF (IWMY) and Vanguard S&P 500 ETF (VOO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IWMY achieves a 14.39% return, which is significantly higher than VOO's 10.87% return.

IWMY

• 1D: 0.26%
• 1M: 0.60%
• 6M: 9.13%
• YTD: 14.39%
• 1Y: 17.50%
• 3Y*: —
• 5Y*: —
• 10Y*: —

VOO

• 1D: 0.38%
• 1M: 1.64%
• 6M: 8.98%
• YTD: 10.87%
• 1Y: 21.75%
• 3Y*: 20.31%
• 5Y*: 13.16%
• 10Y*: 15.20%

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

IWMY vs. VOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
IWMY Defiance R2000 Weekly Distribution ETF	14.39%	10.18%	5.56%	10.06%
VOO Vanguard S&P 500 ETF	10.87%	17.82%	24.98%	14.86%

Correlation

The correlation between IWMY and VOO is 0.78, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.78
Correlation (All Time) Calculated using the full available price history since Oct 31, 2023	0.75

The correlation between IWMY and VOO has been stable across timeframes, ranging from 0.75 to 0.78 - a consistent structural relationship.

Return for Risk

IWMY vs. VOO — Risk / Return Rank

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

IWMY

IWMY Risk / Return Rank: 36
IWMY Sharpe Ratio Rank: 37
IWMY Sortino Ratio Rank: 35
IWMY Omega Ratio Rank: 34
IWMY Calmar Ratio Rank: 37
IWMY Martin Ratio Rank: 39

VOO

VOO Risk / Return Rank: 67
VOO Sharpe Ratio Rank: 67
VOO Sortino Ratio Rank: 66
VOO Omega Ratio Rank: 67
VOO Calmar Ratio Rank: 62
VOO Martin Ratio Rank: 73

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.

IWMY vs. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Defiance R2000 Weekly Distribution ETF (IWMY) and Vanguard S&P 500 ETF (VOO). 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.

	IWMY	VOO	Difference
Sharpe ratio: Return per unit of total volatility	1.08	1.75	-0.67
Sortino ratio: Return per unit of downside risk	1.53	2.41	-0.88
Omega ratio: Gain probability vs. loss probability	1.19	1.32	-0.12
Calmar ratio: Return relative to maximum drawdown	1.52	2.45	-0.93
Martin ratio: Return relative to average drawdown	4.96	10.70	-5.75

IWMY vs. VOO - Sharpe Ratio Comparison

The current IWMY Sharpe Ratio is 1.08, which is lower than the VOO Sharpe Ratio of 1.75. The chart below compares the historical Sharpe Ratios of IWMY and VOO, 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

IWMY vs. VOO - Drawdown Comparison

The maximum IWMY drawdown since its inception was -18.72%, smaller than the maximum VOO drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for IWMY and VOO.

Drawdown Indicators

	IWMY	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-18.72%	-33.99%	+15.27%
Max Drawdown (1Y) Largest decline over 1 year	-11.57%	-8.90%	-2.67%
Max Drawdown (3Y) Largest decline over 3 years	—	-18.69%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-24.52%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-33.99%	—
Current Drawdown Current decline from peak	-1.75%	-0.74%	-1.01%
Average Drawdown Average peak-to-trough decline	-2.90%	-3.67%	+0.77%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.54%	2.04%	+1.50%

Volatility

IWMY vs. VOO - Volatility Comparison

The current volatility for Defiance R2000 Weekly Distribution ETF (IWMY) is 3.53%, while Vanguard S&P 500 ETF (VOO) has a volatility of 3.86%. This indicates that IWMY experiences smaller price fluctuations and is considered to be less risky than VOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IWMY	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.53%	3.86%	-0.33%
Volatility (6M) Calculated over the trailing 6-month period	13.47%	9.96%	+3.51%
Volatility (1Y) Calculated over the trailing 1-year period	16.30%	12.51%	+3.79%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.84%	16.93%	-1.09%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.84%	18.00%	-2.16%

IWMY vs. VOO - Expense Ratio Comparison

IWMY has a 1.05% expense ratio, which is higher than VOO's 0.03% expense ratio.

Dividends

IWMY vs. VOO - Dividend Comparison

IWMY's dividend yield for the trailing twelve months is around 42.74%, more than VOO's 1.06% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IWMY Defiance R2000 Weekly Distribution ETF	42.74%	63.33%	107.92%	11.34%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
VOO Vanguard S&P 500 ETF	1.06%	1.13%	1.24%	1.46%	1.69%	1.25%	1.54%	1.88%	2.06%	1.78%	2.02%	2.10%

Frequently Asked Questions

Can I hold both IWMY and VOO in my portfolio?

IWMY and VOO have a correlation of 0.78, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IWMY or VOO?

VOO has higher volatility (3.86%) compared to IWMY (3.53%). In terms of maximum drawdown, IWMY dropped -18.72% vs VOO's -33.99%.

Which ETF is better, IWMY or VOO?

On 1-year performance, VOO leads with 21.75% vs 17.50% for IWMY. On fees, VOO is cheaper at 0.03% per year. On volatility, IWMY has been the lower-risk option at 3.53%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IWMY or VOO?

Over the 1-year period, VOO has performed better with a 21.75% return vs 17.50%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IWMY or VOO?

VOO is cheaper with a 0.03% expense ratio, compared with 1.05% for IWMY.

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

IWMY has the higher dividend yield at 42.74%, compared with 1.06% for VOO.

What is the main difference between IWMY and VOO?

IWMY is categorized as Options Trading, while VOO is S&P 500. They also come from different issuers: Defiance and Vanguard. Their fees differ too: 1.05% for IWMY and 0.03% for VOO.

Which has better risk-adjusted returns?

VOO currently has the higher Sharpe Ratio (1.75 vs 1.08), 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.