RZG vs. IVOO

Last updated Jun 4, 2026

RZG (Invesco S&P SmallCap 600® Pure Growth ETF) and IVOO (Vanguard S&P Mid-Cap 400 ETF) are both Small Cap Growth Equities funds - RZG tracks the S&P Small Cap 600 Pure Growth while IVOO tracks the S&P MidCap 400 Index. Both are passively managed. Over the past 10 years, RZG returned 9.65%/yr vs 11.22%/yr for IVOO. Their correlation of 0.90 suggests significant overlap in exposure. RZG charges 0.35%/yr vs 0.10%/yr for IVOO.

Performance

RZG vs. IVOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco S&P SmallCap 600® Pure Growth ETF (RZG) 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, RZG achieves a 18.15% return, which is significantly higher than IVOO's 14.13% return. Over the past 10 years, RZG has underperformed IVOO with an annualized return of 9.65%, while IVOO has yielded a comparatively higher 11.22% annualized return.

RZG

• 1D: -0.14%
• 1M: -0.10%
• YTD: 18.15%
• 6M: 16.98%
• 1Y: 30.70%
• 3Y*: 17.12%
• 5Y*: 4.85%
• 10Y*: 9.65%

IVOO

• 1D: -0.02%
• 1M: 3.90%
• YTD: 14.13%
• 6M: 14.37%
• 1Y: 25.48%
• 3Y*: 16.07%
• 5Y*: 8.15%
• 10Y*: 11.22%

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

RZG vs. IVOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RZG Invesco S&P SmallCap 600® Pure Growth ETF	18.15%	10.22%	9.84%	19.15%	-29.00%	21.01%	17.76%	14.25%	-8.70%	19.18%
IVOO Vanguard S&P Mid-Cap 400 ETF	14.13%	7.47%	13.77%	16.45%	-13.17%	24.61%	13.61%	26.18%	-11.33%	16.38%

Correlation

The correlation between RZG and IVOO is 0.88, 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	0.88
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 RZG and IVOO has been stable across timeframes, ranging from 0.88 to 0.92 - a consistent structural relationship.

RZG vs. IVOO - Sectors Allocation Comparison

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

Return for Risk

RZG vs. IVOO — Risk / Return Rank

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

RZG

RZG Risk / Return Rank: 56
RZG Sharpe Ratio Rank: 48
RZG Sortino Ratio Rank: 51
RZG Omega Ratio Rank: 45
RZG Calmar Ratio Rank: 72
RZG Martin Ratio Rank: 65

IVOO

IVOO Risk / Return Rank: 51
IVOO Sharpe Ratio Rank: 46
IVOO Sortino Ratio Rank: 48
IVOO Omega Ratio Rank: 45
IVOO Calmar Ratio Rank: 58
IVOO 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.

RZG vs. IVOO - Risk-Adjusted Trends Comparison

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

	RZG	IVOO	Difference
Sharpe ratio: Return per unit of total volatility	1.66	1.65	+0.01
Sortino ratio: Return per unit of downside risk	2.48	2.41	+0.07
Omega ratio: Gain probability vs. loss probability	1.29	1.29	-0.01
Calmar ratio: Return relative to maximum drawdown	3.58	2.91	+0.67
Martin ratio: Return relative to average drawdown	11.94	10.61	+1.33
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RZG vs. IVOO - Sharpe Ratio Comparison

The current RZG Sharpe Ratio is 1.66, which is comparable to the IVOO Sharpe Ratio of 1.65. The chart below compares the historical Sharpe Ratios of RZG 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

	RZG	IVOO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.66	1.65	+0.01
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.21	0.42	-0.20
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.39	0.53	-0.14
Sharpe Ratio (All Time) Calculated using the full available price history	0.37	0.62	-0.24

Drawdowns

RZG vs. IVOO - Drawdown Comparison

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

Drawdown Indicators

	RZG	IVOO	Difference
Max Drawdown Largest peak-to-trough decline	-58.52%	-42.33%	-16.19%
Max Drawdown (1Y) Largest decline over 1 year	-8.63%	-8.81%	+0.18%
Max Drawdown (3Y) Largest decline over 3 years	-25.73%	-24.22%	-1.51%
Max Drawdown (5Y) Largest decline over 5 years	-38.33%	-24.22%	-14.11%
Max Drawdown (10Y) Largest decline over 10 years	-54.02%	-42.33%	-11.69%
Current Drawdown Current decline from peak	-1.92%	-0.02%	-1.90%
Average Drawdown Average peak-to-trough decline	-12.13%	-5.27%	-6.86%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.58%	2.41%	+0.17%

Volatility

RZG vs. IVOO - Volatility Comparison

Invesco S&P SmallCap 600® Pure Growth ETF (RZG) has a higher volatility of 4.68% compared to Vanguard S&P Mid-Cap 400 ETF (IVOO) at 4.39%. This indicates that RZG's price experiences larger fluctuations and is considered to be riskier than IVOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RZG	IVOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.68%	4.39%	+0.29%
Volatility (6M) Calculated over the trailing 6-month period	13.57%	11.36%	+2.21%
Volatility (1Y) Calculated over the trailing 1-year period	18.57%	15.56%	+3.01%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.97%	19.72%	+3.25%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.64%	21.19%	+3.45%

RZG vs. IVOO - Expense Ratio Comparison

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

Dividends

RZG vs. IVOO - Dividend Comparison

RZG's dividend yield for the trailing twelve months is around 0.42%, 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%
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 RZG and IVOO in my portfolio?

RZG and IVOO have a correlation of 0.88, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RZG or IVOO?

RZG has higher volatility (4.68%) compared to IVOO (4.39%). In terms of maximum drawdown, RZG dropped -58.52% vs IVOO's -42.33%.

Which ETF is better, RZG or IVOO?

On 10-year performance, IVOO leads with 11.22% vs 9.65% for RZG. On fees, IVOO is cheaper at 0.10% per year. On volatility, IVOO has been the lower-risk option at 4.39%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, RZG or IVOO?

Over the 10-year period, IVOO has performed better with a 11.22% return vs 9.65%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, RZG or IVOO?

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

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

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

What is the main difference between RZG and IVOO?

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

Which has better risk-adjusted returns?

RZG currently has the higher Sharpe Ratio (1.66 vs 1.65), 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.