IWR vs. IVOO

Last updated Jun 5, 2026

IWR (iShares Russell Midcap ETF) and IVOO (Vanguard S&P Mid-Cap 400 ETF) are both exchange-traded funds - IWR is a Mid Cap Growth Equities fund tracking the Russell Midcap Index, while IVOO is a Small Cap Growth Equities fund tracking the S&P MidCap 400 Index. Both are passively managed. Over the past 10 years, IWR returned 11.55%/yr vs 11.18%/yr for IVOO. With a 0.96 correlation, they move nearly in lockstep. IWR charges 0.19%/yr vs 0.10%/yr for IVOO.

Performance

IWR vs. IVOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Russell Midcap ETF (IWR) and Vanguard S&P Mid-Cap 400 ETF (IVOO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IWR achieves a 13.02% return, which is significantly lower than IVOO's 14.55% return. Both investments have delivered pretty close results over the past 10 years, with IWR having a 11.55% annualized return and IVOO not far behind at 11.18%.

IWR

• 1D: 0.52%
• 1M: 3.28%
• YTD: 13.02%
• 6M: 12.45%
• 1Y: 22.54%
• 3Y*: 17.59%
• 5Y*: 8.11%
• 10Y*: 11.55%

IVOO

• 1D: 0.36%
• 1M: 2.93%
• YTD: 14.55%
• 6M: 14.27%
• 1Y: 26.17%
• 3Y*: 16.66%
• 5Y*: 8.23%
• 10Y*: 11.18%

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

IWR vs. IVOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IWR iShares Russell Midcap ETF	13.02%	10.37%	15.21%	17.05%	-17.48%	22.44%	16.93%	30.23%	-9.10%	18.25%
IVOO Vanguard S&P Mid-Cap 400 ETF	14.55%	7.47%	13.77%	16.45%	-13.17%	24.61%	13.61%	26.18%	-11.33%	16.38%

Correlation

The correlation between IWR and IVOO is 0.96 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.96
Correlation (3Y) Calculated over the trailing 3-year period	0.97
Correlation (5Y) Calculated over the trailing 5-year period	0.97
Correlation (10Y) Calculated over the trailing 10-year period	0.97
Correlation (All Time) Calculated using the full available price history since Sep 10, 2010	0.96

The correlation between IWR and IVOO has been stable across timeframes, ranging from 0.96 to 0.97 - a consistent structural relationship.

IWR vs. IVOO - Sectors Allocation Comparison

Sectors	IWR	IVOO
Industrials	18.4%	25.1%
Technology	17.2%	15.7%
Financial Services	12.5%	14.4%
Consumer Cyclical	11.2%	10.7%
Healthcare	8.7%	8.6%
Energy	7.2%	5.5%
Real Estate	7.0%	7.5%
Utilities	6.1%	3.1%
Basic Materials	4.3%	4.8%
Consumer Defensive	4.1%	3.8%
Communication Services	3.4%	1.0%

Return for Risk

IWR vs. IVOO — Risk / Return Rank

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

IWR

IWR Risk / Return Rank: 53
IWR Sharpe Ratio Rank: 50
IWR Sortino Ratio Rank: 51
IWR Omega Ratio Rank: 48
IWR Calmar Ratio Rank: 57
IWR Martin Ratio Rank: 61

IVOO

IVOO Risk / Return Rank: 55
IVOO Sharpe Ratio Rank: 50
IVOO Sortino Ratio Rank: 52
IVOO Omega Ratio Rank: 48
IVOO Calmar Ratio Rank: 61
IVOO Martin Ratio Rank: 62

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.

IWR vs. IVOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Russell Midcap ETF (IWR) and Vanguard S&P Mid-Cap 400 ETF (IVOO). 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.

	IWR	IVOO	Difference
Sharpe ratio: Return per unit of total volatility	1.69	1.69	0.00
Sortino ratio: Return per unit of downside risk	2.44	2.47	-0.03
Omega ratio: Gain probability vs. loss probability	1.30	1.30	0.00
Calmar ratio: Return relative to maximum drawdown	2.77	2.98	-0.21
Martin ratio: Return relative to average drawdown	10.70	10.90	-0.20
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IWR vs. IVOO - Sharpe Ratio Comparison

The current IWR Sharpe Ratio is 1.69, which is comparable to the IVOO Sharpe Ratio of 1.69. The chart below compares the historical Sharpe Ratios of IWR and IVOO, 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

	IWR	IVOO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.69	1.69	0.00
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.45	0.42	+0.03
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.60	0.53	+0.07
Sharpe Ratio (All Time) Calculated using the full available price history	0.50	0.62	-0.12

Drawdowns

IWR vs. IVOO - Drawdown Comparison

The maximum IWR drawdown since its inception was -58.78%, which is greater than IVOO's maximum drawdown of -42.33%. Use the drawdown chart below to compare losses from any high point for IWR and IVOO.

Drawdown Indicators

	IWR	IVOO	Difference
Max Drawdown Largest peak-to-trough decline	-58.78%	-42.33%	-16.45%
Max Drawdown (1Y) Largest decline over 1 year	-8.17%	-8.81%	+0.64%
Max Drawdown (3Y) Largest decline over 3 years	-21.09%	-24.22%	+3.13%
Max Drawdown (5Y) Largest decline over 5 years	-26.18%	-24.22%	-1.96%
Max Drawdown (10Y) Largest decline over 10 years	-40.59%	-42.33%	+1.74%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-7.80%	-5.27%	-2.53%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.11%	2.41%	-0.30%

Volatility

IWR vs. IVOO - Volatility Comparison

The current volatility for iShares Russell Midcap ETF (IWR) is 3.16%, while Vanguard S&P Mid-Cap 400 ETF (IVOO) has a volatility of 4.24%. This indicates that IWR experiences smaller price fluctuations and is considered to be less risky than IVOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IWR	IVOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.16%	4.24%	-1.08%
Volatility (6M) Calculated over the trailing 6-month period	9.84%	11.35%	-1.51%
Volatility (1Y) Calculated over the trailing 1-year period	13.36%	15.52%	-2.16%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.22%	19.72%	-1.50%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.36%	21.19%	-1.83%

IWR vs. IVOO - Expense Ratio Comparison

IWR has a 0.19% expense ratio, which is higher than IVOO's 0.10% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

IWR vs. IVOO - Dividend Comparison

IWR's dividend yield for the trailing twelve months is around 1.14%, less than IVOO's 1.19% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IVOO Vanguard S&P Mid-Cap 400 ETF	1.19%	1.35%	1.30%	1.25%	1.58%	1.14%	1.23%	1.49%	1.56%	1.22%	1.37%	1.45%
IWR iShares Russell Midcap ETF	1.14%	1.29%	1.27%	1.43%	1.59%	1.04%	1.28%	1.43%	1.98%	1.52%	1.72%	1.59%

Frequently Asked Questions

Can I hold both IWR and IVOO in my portfolio?

With a correlation of 0.96, IWR and IVOO move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, IWR or IVOO?

IVOO has higher volatility (4.24%) compared to IWR (3.16%). In terms of maximum drawdown, IWR dropped -58.78% vs IVOO's -42.33%.

Which ETF is better, IWR or IVOO?

On 10-year performance, IWR leads with 11.55% vs 11.18% for IVOO. On fees, IVOO is cheaper at 0.10% per year. On volatility, IWR has been the lower-risk option at 3.16%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IWR or IVOO?

Over the 10-year period, IWR has performed better with a 11.55% return vs 11.18%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IWR or IVOO?

IVOO is cheaper with a 0.10% expense ratio, compared with 0.19% for IWR.

Which ETF pays a higher dividend yield, IWR or IVOO?

IVOO has the higher dividend yield at 1.19%, compared with 1.14% for IWR.

What is the main difference between IWR and IVOO?

IWR is categorized as Mid Cap Growth Equities, while IVOO is Small Cap Growth Equities. IWR tracks Russell Midcap Index, while IVOO tracks S&P MidCap 400 Index. They also come from different issuers: iShares and Vanguard. Their fees differ too: 0.19% for IWR and 0.10% for IVOO.

Which has better risk-adjusted returns?

IWR currently has the higher Sharpe Ratio (1.69 vs 1.69), 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.