RZG vs. BKSE

Last updated Aug 5, 2026

RZG (Invesco S&P SmallCap 600® Pure Growth ETF) and BKSE (BNY Mellon US Small Cap Core Equity ETF) are both Small Cap Growth Equities funds - RZG tracks the S&P Small Cap 600 Pure Growth while BKSE tracks the Morningstar US Small Cap Index. Both are passively managed. Over the past 5 years, RZG returned 6.47%/yr vs 9.13%/yr for BKSE. Their correlation of 0.93 means they have usually moved in the same direction. RZG charges 0.35%/yr vs 0.04%/yr for BKSE.

Performance

RZG vs. BKSE - 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 BNY Mellon US Small Cap Core Equity ETF (BKSE). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RZG achieves a 31.95% return, which is significantly higher than BKSE's 22.19% return.

RZG

• 1D: 2.48%
• 1M: -0.04%
• 6M: 24.01%
• YTD: 31.95%
• 1Y: 40.91%
• 3Y*: 19.09%
• 5Y*: 6.47%
• 10Y*: 10.25%
• ALL TIME*: 9.44%

BKSE

• 1D: 1.60%
• 1M: 2.69%
• 6M: 15.41%
• YTD: 22.19%
• 1Y: 36.96%
• 3Y*: 17.60%
• 5Y*: 9.13%
• 10Y*: —
• ALL TIME*: 17.03%

*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)
BKSE BNY Mellon US Small Cap Core Equity ETF	$280.06K	$250.83K	$246.35K
RZG Invesco S&P SmallCap 600® Pure Growth ETF	$1.33M	$1.65M	$1.06M

RZG vs. BKSE - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
RZG Invesco S&P SmallCap 600® Pure Growth ETF	31.95%	10.22%	9.84%	19.15%	-29.00%	21.01%	73.20%
BKSE BNY Mellon US Small Cap Core Equity ETF	22.19%	13.09%	9.56%	22.37%	-18.44%	16.18%	53.89%

Correlation

The correlation between RZG and BKSE is 0.91, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.91
Correlation (3Y) Balances recent behavior with more history.	0.93
Correlation (5Y) Shows whether the relationship held over a longer period.	0.94
Correlation (All Time) Calculated using the full available price history since Apr 9, 2020	0.93

The correlation between RZG and BKSE has been stable across timeframes, ranging from 0.91 to 0.94 - a consistent structural relationship.

RZG vs. BKSE - Sectors Allocation Comparison

Sectors	RZG	BKSE
Healthcare	25.1%	14.2%
Technology	17.3%	16.0%
Industrials	16.4%	14.9%
Financial Services	15.1%	16.4%
Consumer Cyclical	9.1%	13.5%
Real Estate	6.8%	7.2%
Consumer Defensive	5.6%	2.6%
Energy	2.4%	5.9%
Communication Services	1.7%	2.0%
Basic Materials	0.4%	4.3%
Utilities	0.4%	3.1%

Return for Risk

RZG vs. BKSE — Risk / Return Rank

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

RZG

RZG Risk / Return Rank: 85
RZG Sharpe Ratio Rank: 82
RZG Sortino Ratio Rank: 86
RZG Omega Ratio Rank: 76
RZG Calmar Ratio Rank: 93
RZG Martin Ratio Rank: 88

BKSE

BKSE Risk / Return Rank: 84
BKSE Sharpe Ratio Rank: 83
BKSE Sortino Ratio Rank: 85
BKSE Omega Ratio Rank: 78
BKSE Calmar Ratio Rank: 88
BKSE Martin Ratio Rank: 87

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.

RZG vs. BKSE - 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 BNY Mellon US Small Cap Core Equity ETF (BKSE). 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.

	RZG	BKSE	Difference
Sharpe ratio: Return per unit of total volatility	2.12	2.14	-0.02
Sortino ratio: Return per unit of downside risk	3.13	3.09	+0.03
Omega ratio: Gain probability vs. loss probability	1.36	1.37	-0.01
Calmar ratio: Return relative to maximum drawdown	4.77	3.95	+0.82
Martin ratio: Return relative to average drawdown	14.75	14.18	+0.57

RZG vs. BKSE - Sharpe Ratio Comparison

The current RZG Sharpe Ratio is 2.12, which is comparable to the BKSE Sharpe Ratio of 2.14. The chart below compares the historical Sharpe Ratios of RZG and BKSE, 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

RZG vs. BKSE - Drawdown Comparison

The maximum RZG drawdown since its inception was -58.52%, which is greater than BKSE's maximum drawdown of -29.08%. Use the drawdown chart below to compare losses from any high point for RZG and BKSE.

Drawdown Indicators

	RZG	BKSE	Difference
Max Drawdown Largest peak-to-trough decline	-58.52%	-29.08%	-29.44%
Max Drawdown (1Y) Largest decline over 1 year	-8.63%	-9.40%	+0.77%
Max Drawdown (3Y) Largest decline over 3 years	-25.73%	-26.76%	+1.03%
Max Drawdown (5Y) Largest decline over 5 years	-38.33%	-29.08%	-9.25%
Max Drawdown (10Y) Largest decline over 10 years	-54.02%	—	—
Current Drawdown Current decline from peak	-1.62%	0.00%	-1.62%
Average Drawdown Average peak-to-trough decline	-12.04%	-8.84%	-3.20%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.78%	2.61%	+0.17%

Volatility

RZG vs. BKSE - Volatility Comparison

Invesco S&P SmallCap 600® Pure Growth ETF (RZG) has a higher volatility of 6.56% compared to BNY Mellon US Small Cap Core Equity ETF (BKSE) at 4.07%. This indicates that RZG's price experiences larger fluctuations and is considered to be riskier than BKSE based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RZG	BKSE	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.56%	4.07%	+2.49%
Volatility (6M) Calculated over the trailing 6-month period	14.93%	12.07%	+2.86%
Volatility (1Y) Calculated over the trailing 1-year period	19.42%	17.42%	+2.00%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.07%	21.37%	+1.70%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.67%	22.13%	+2.54%

RZG vs. BKSE - Expense Ratio Comparison

RZG has a 0.35% expense ratio, which is higher than BKSE's 0.04% expense ratio.

Dividends

RZG vs. BKSE - Dividend Comparison

RZG's dividend yield for the trailing twelve months is around 0.43%, less than BKSE's 1.17% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BKSE BNY Mellon US Small Cap Core Equity ETF	1.17%	1.26%	1.55%	1.38%	1.50%	1.17%	0.82%	0.00%	0.00%	0.00%	0.00%	0.00%
RZG Invesco S&P SmallCap 600® Pure Growth ETF	0.43%	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 BKSE in my portfolio?

With a correlation of 0.91, RZG and BKSE 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, RZG or BKSE?

RZG has higher volatility (6.56%) compared to BKSE (4.07%). In terms of maximum drawdown, RZG dropped -58.52% vs BKSE's -29.08%.

Which ETF is better, RZG or BKSE?

On 5-year performance, BKSE leads with 9.13% vs 6.47% for RZG. On fees, BKSE is cheaper at 0.04% per year. On volatility, BKSE has been the lower-risk option at 4.07%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, RZG or BKSE?

Over the 5-year period, BKSE has performed better with a 9.13% return vs 6.47%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, RZG or BKSE?

BKSE is cheaper with a 0.04% expense ratio, compared with 0.35% for RZG.

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

BKSE has the higher dividend yield at 1.17%, compared with 0.43% for RZG.

What is the main difference between RZG and BKSE?

RZG tracks S&P Small Cap 600 Pure Growth, while BKSE tracks Morningstar US Small Cap Index. They also come from different issuers: Invesco and BNY Mellon. Their fees differ too: 0.35% for RZG and 0.04% for BKSE.

Which has better risk-adjusted returns?

BKSE currently has the higher Sharpe Ratio (2.14 vs 2.12), 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.