IVOO vs. RZG

Last updated Jun 3, 2026

IVOO (Vanguard S&P Mid-Cap 400 ETF) and RZG (Invesco S&P SmallCap 600® Pure Growth ETF) are both Small Cap Growth Equities funds - IVOO tracks the S&P MidCap 400 Index while RZG tracks the S&P Small Cap 600 Pure Growth. Both are passively managed. Over the past 10 years, IVOO returned 11.22%/yr vs 9.67%/yr for RZG. Their correlation of 0.90 suggests significant overlap in exposure. IVOO charges 0.10%/yr vs 0.35%/yr for RZG.

Performance

IVOO vs. RZG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard S&P Mid-Cap 400 ETF (IVOO) and Invesco S&P SmallCap 600® Pure Growth ETF (RZG). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IVOO achieves a 14.15% return, which is significantly lower than RZG's 18.31% return. Over the past 10 years, IVOO has outperformed RZG with an annualized return of 11.22%, while RZG has yielded a comparatively lower 9.67% annualized return.

IVOO

• 1D: 0.86%
• 1M: 3.31%
• YTD: 14.15%
• 6M: 15.23%
• 1Y: 27.06%
• 3Y*: 16.07%
• 5Y*: 8.27%
• 10Y*: 11.22%

RZG

• 1D: 0.23%
• 1M: -0.59%
• YTD: 18.31%
• 6M: 18.84%
• 1Y: 32.35%
• 3Y*: 17.17%
• 5Y*: 5.01%
• 10Y*: 9.67%

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

IVOO vs. RZG - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IVOO Vanguard S&P Mid-Cap 400 ETF	14.15%	7.47%	13.77%	16.45%	-13.17%	24.61%	13.61%	26.18%	-11.33%	16.38%
RZG Invesco S&P SmallCap 600® Pure Growth ETF	18.31%	10.22%	9.84%	19.15%	-29.00%	21.01%	17.76%	14.25%	-8.70%	19.18%

Correlation

The correlation between IVOO and RZG is 0.89, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.89
Correlation (3Y) Calculated over the trailing 3-year period	0.91
Correlation (5Y) Calculated over the trailing 5-year period	0.92
Correlation (10Y) Calculated over the trailing 10-year period	0.91
Correlation (All Time) Calculated using the full available price history since Sep 10, 2010	0.90

The correlation between IVOO and RZG has been stable across timeframes, ranging from 0.89 to 0.92 - a consistent structural relationship.

IVOO vs. RZG - Sectors Allocation Comparison

Sectors	IVOO	RZG
Industrials	25.1%	18.2%
Technology	15.7%	16.8%
Financial Services	14.4%	15.0%
Consumer Cyclical	10.7%	8.8%
Healthcare	8.6%	22.0%
Real Estate	7.5%	7.6%
Energy	5.5%	3.0%
Basic Materials	4.8%	0.4%
Consumer Defensive	3.8%	5.9%
Utilities	3.1%	0.4%
Communication Services	1.0%	1.9%

Return for Risk

IVOO vs. RZG — Risk / Return Rank

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

IVOO

IVOO Risk / Return Rank: 54
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

RZG

RZG Risk / Return Rank: 58
RZG Sharpe Ratio Rank: 51
RZG Sortino Ratio Rank: 53
RZG Omega Ratio Rank: 47
RZG Calmar Ratio Rank: 74
RZG Martin Ratio Rank: 67

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.

IVOO vs. RZG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard S&P Mid-Cap 400 ETF (IVOO) and Invesco S&P SmallCap 600® Pure Growth ETF (RZG). 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.

	IVOO	RZG	Difference
Sharpe ratio Return per unit of total volatility	1.75	1.75	0.00
Sortino ratio Return per unit of downside risk	2.54	2.59	-0.05
Omega ratio Gain probability vs. loss probability	1.31	1.30	+0.01
Calmar ratio Return relative to maximum drawdown	3.06	3.76	-0.70
Martin ratio Return relative to average drawdown	11.19	12.60	-1.40
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IVOO vs. RZG - Sharpe Ratio Comparison

The current IVOO Sharpe Ratio is 1.75, which is comparable to the RZG Sharpe Ratio of 1.75. The chart below compares the historical Sharpe Ratios of IVOO and RZG, 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

	IVOO	RZG	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.75	1.75	0.00
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.42	0.22	+0.20
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.53	0.39	+0.14
Sharpe Ratio (All Time) Calculated using the full available price history	0.62	0.37	+0.24

Drawdowns

IVOO vs. RZG - Drawdown Comparison

The maximum IVOO drawdown since its inception was -42.33%, smaller than the maximum RZG drawdown of -58.52%. Use the drawdown chart below to compare losses from any high point for IVOO and RZG.

Drawdown Indicators

	IVOO	RZG	Difference
Max Drawdown Largest peak-to-trough decline	-42.33%	-58.52%	+16.19%
Max Drawdown (1Y) Largest decline over 1 year	-8.81%	-8.63%	-0.18%
Max Drawdown (3Y) Largest decline over 3 years	-24.22%	-25.73%	+1.51%
Max Drawdown (5Y) Largest decline over 5 years	-24.22%	-38.33%	+14.11%
Max Drawdown (10Y) Largest decline over 10 years	-42.33%	-54.02%	+11.69%
Current Drawdown Current decline from peak	0.00%	-1.78%	+1.78%
Average Drawdown Average peak-to-trough decline	-5.27%	-12.13%	+6.86%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.41%	2.57%	-0.16%

Volatility

IVOO vs. RZG - Volatility Comparison

The current volatility for Vanguard S&P Mid-Cap 400 ETF (IVOO) is 4.46%, while Invesco S&P SmallCap 600® Pure Growth ETF (RZG) has a volatility of 4.72%. This indicates that IVOO experiences smaller price fluctuations and is considered to be less risky than RZG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IVOO	RZG	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.46%	4.72%	-0.26%
Volatility (6M) Calculated over the trailing 6-month period	11.38%	13.64%	-2.26%
Volatility (1Y) Calculated over the trailing 1-year period	15.56%	18.57%	-3.01%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.73%	22.98%	-3.25%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.20%	24.65%	-3.45%

IVOO vs. RZG - Expense Ratio Comparison

IVOO has a 0.10% expense ratio, which is lower than RZG's 0.35% expense ratio.

Dividends

IVOO vs. RZG - Dividend Comparison

IVOO's dividend yield for the trailing twelve months is around 1.19%, more than RZG's 0.42% 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%
RZG Invesco S&P SmallCap 600® Pure Growth ETF	0.42%	0.37%	0.95%	1.43%	1.59%	0.22%	0.49%	0.70%	0.46%	0.44%	0.65%	0.70%

Frequently Asked Questions

Can I hold both IVOO and RZG in my portfolio?

IVOO and RZG have a correlation of 0.89, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IVOO or RZG?

RZG has higher volatility (4.72%) compared to IVOO (4.46%). In terms of maximum drawdown, IVOO dropped -42.33% vs RZG's -58.52%.

Which ETF is better, IVOO or RZG?

On 10-year performance, IVOO leads with 11.22% vs 9.67% for RZG. On fees, IVOO is cheaper at 0.10% per year. On volatility, IVOO has been the lower-risk option at 4.46%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IVOO or RZG?

Over the 10-year period, IVOO has performed better with a 11.22% return vs 9.67%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IVOO or RZG?

IVOO is cheaper with a 0.10% expense ratio, compared with 0.35% for RZG.

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

IVOO has the higher dividend yield at 1.19%, compared with 0.42% for RZG.

What is the main difference between IVOO and RZG?

IVOO tracks S&P MidCap 400 Index, while RZG tracks S&P Small Cap 600 Pure Growth. They also come from different issuers: Vanguard and Invesco. Their fees differ too: 0.10% for IVOO and 0.35% for RZG.

Which has better risk-adjusted returns?

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