RWK vs. BCSIX

Last updated Jun 3, 2026

RWK (Invesco S&P MidCap 400 Revenue ETF) and BCSIX (Brown Capital Management Small Company Fund) are both funds - RWK is a Small Cap Blend Equities fund tracking the S&P MidCap 400 Revenue-Weighted Index, while BCSIX is a Small Cap Growth Equities fund managed by BlackRock. Over the past 10 years, RWK returned 12.83%/yr vs 5.47%/yr for BCSIX. A 0.73 correlation means they provide meaningful diversification when combined. RWK charges 0.39%/yr vs 1.25%/yr for BCSIX.

Performance

RWK vs. BCSIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco S&P MidCap 400 Revenue ETF (RWK) and Brown Capital Management Small Company Fund (BCSIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RWK achieves a 13.73% return, which is significantly higher than BCSIX's -2.90% return. Over the past 10 years, RWK has outperformed BCSIX with an annualized return of 12.83%, while BCSIX has yielded a comparatively lower 5.47% annualized return.

RWK

• 1D: 1.10%
• 1M: 3.22%
• YTD: 13.73%
• 6M: 14.17%
• 1Y: 30.18%
• 3Y*: 18.14%
• 5Y*: 10.78%
• 10Y*: 12.83%

BCSIX

• 1D: 3.53%
• 1M: 11.34%
• YTD: -2.90%
• 6M: -6.56%
• 1Y: -3.07%
• 3Y*: -0.73%
• 5Y*: -6.02%
• 10Y*: 5.47%

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

RWK vs. BCSIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RWK Invesco S&P MidCap 400 Revenue ETF	13.73%	10.27%	11.94%	23.76%	-8.19%	34.31%	11.06%	28.20%	-14.65%	13.39%
BCSIX Brown Capital Management Small Company Fund	-2.90%	-12.48%	9.86%	19.16%	-37.85%	-4.26%	45.23%	29.22%	-0.57%	28.90%

Correlation

The correlation between RWK and BCSIX is 0.54, 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	0.54
Correlation (3Y) Calculated over the trailing 3-year period	0.68
Correlation (5Y) Calculated over the trailing 5-year period	0.69
Correlation (10Y) Calculated over the trailing 10-year period	0.67
Correlation (All Time) Calculated using the full available price history since Feb 25, 2008	0.73

The correlation between RWK and BCSIX shifts across timeframes, from 0.54 (1 year) to 0.73 (all time), reflecting how their relationship changes across market environments.

Return for Risk

RWK vs. BCSIX — Risk / Return Rank

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

RWK

RWK Risk / Return Rank: 52
RWK Sharpe Ratio Rank: 52
RWK Sortino Ratio Rank: 56
RWK Omega Ratio Rank: 50
RWK Calmar Ratio Rank: 52
RWK Martin Ratio Rank: 49

BCSIX

BCSIX Risk / Return Rank: 2
BCSIX Sharpe Ratio Rank: 2
BCSIX Sortino Ratio Rank: 2
BCSIX Omega Ratio Rank: 2
BCSIX Calmar Ratio Rank: 2
BCSIX Martin Ratio Rank: 2

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.

RWK vs. BCSIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco S&P MidCap 400 Revenue ETF (RWK) and Brown Capital Management Small Company Fund (BCSIX). 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.

	RWK	BCSIX	Difference
Sharpe ratio Return per unit of total volatility	1.82	-0.17	+1.98
Sortino ratio Return per unit of downside risk	2.70	-0.08	+2.78
Omega ratio Gain probability vs. loss probability	1.31	0.99	+0.32
Calmar ratio Return relative to maximum drawdown	2.62	-0.08	+2.70
Martin ratio Return relative to average drawdown	8.44	-0.18	+8.62
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RWK vs. BCSIX - Sharpe Ratio Comparison

The current RWK Sharpe Ratio is 1.82, which is higher than the BCSIX Sharpe Ratio of -0.17. The chart below compares the historical Sharpe Ratios of RWK and BCSIX, 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

	RWK	BCSIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.82	-0.17	+1.98
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.51	-0.16	+0.67
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.56	0.17	+0.39
Sharpe Ratio (All Time) Calculated using the full available price history	0.48	0.37	+0.11

Drawdowns

RWK vs. BCSIX - Drawdown Comparison

The maximum RWK drawdown since its inception was -56.49%, roughly equal to the maximum BCSIX drawdown of -57.17%. Use the drawdown chart below to compare losses from any high point for RWK and BCSIX.

Drawdown Indicators

	RWK	BCSIX	Difference
Max Drawdown Largest peak-to-trough decline	-56.49%	-57.17%	+0.68%
Max Drawdown (1Y) Largest decline over 1 year	-11.14%	-26.97%	+15.83%
Max Drawdown (3Y) Largest decline over 3 years	-24.58%	-57.17%	+32.59%
Max Drawdown (5Y) Largest decline over 5 years	-24.58%	-57.17%	+32.59%
Max Drawdown (10Y) Largest decline over 10 years	-46.20%	-57.17%	+10.97%
Current Drawdown Current decline from peak	0.00%	-46.37%	+46.37%
Average Drawdown Average peak-to-trough decline	-7.56%	-13.54%	+5.98%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.46%	11.44%	-7.98%

Volatility

RWK vs. BCSIX - Volatility Comparison

The current volatility for Invesco S&P MidCap 400 Revenue ETF (RWK) is 4.93%, while Brown Capital Management Small Company Fund (BCSIX) has a volatility of 7.87%. This indicates that RWK experiences smaller price fluctuations and is considered to be less risky than BCSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RWK	BCSIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.93%	7.87%	-2.94%
Volatility (6M) Calculated over the trailing 6-month period	11.87%	17.70%	-5.83%
Volatility (1Y) Calculated over the trailing 1-year period	16.72%	22.46%	-5.74%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.13%	39.11%	-17.98%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.96%	32.37%	-9.41%

RWK vs. BCSIX - Expense Ratio Comparison

RWK has a 0.39% expense ratio, which is lower than BCSIX's 1.25% expense ratio.

Dividends

RWK vs. BCSIX - Dividend Comparison

RWK's dividend yield for the trailing twelve months is around 1.12%, less than BCSIX's 111.77% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BCSIX Brown Capital Management Small Company Fund	111.77%	108.53%	52.70%	9.36%	12.04%	9.32%	7.46%	8.62%	6.85%	5.94%	5.54%	9.15%
RWK Invesco S&P MidCap 400 Revenue ETF	1.12%	1.25%	1.11%	1.05%	1.18%	0.85%	0.96%	1.09%	1.22%	0.99%	1.30%	0.92%

Frequently Asked Questions

Can I hold both RWK and BCSIX in my portfolio?

RWK and BCSIX have a correlation of 0.54, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RWK or BCSIX?

BCSIX has higher volatility (7.87%) compared to RWK (4.93%). In terms of maximum drawdown, RWK dropped -56.49% vs BCSIX's -57.17%.

Which has better risk-adjusted returns?

RWK currently has the higher Sharpe Ratio (1.82 vs -0.17), 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.