SMLV vs. RWK

Last updated Jul 21, 2026

SMLV (SPDR SSGA US Small Cap Low Volatility Index ETF) and RWK (Invesco S&P MidCap 400 Revenue ETF) are both exchange-traded funds - SMLV is a Volatility Hedged Equity fund tracking the SSGA US Small Cap Low Volatility Index, while RWK is a Small Cap Blend Equities fund tracking the S&P MidCap 400 Revenue-Weighted Index. Both are passively managed. Over the past 10 years, SMLV returned 10.42%/yr vs 12.69%/yr for RWK. Their correlation of 0.85 suggests significant overlap in exposure. SMLV charges 0.12%/yr vs 0.39%/yr for RWK.

Performance

SMLV vs. RWK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SPDR SSGA US Small Cap Low Volatility Index ETF (SMLV) and Invesco S&P MidCap 400 Revenue ETF (RWK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SMLV achieves a 22.24% return, which is significantly higher than RWK's 16.44% return. Over the past 10 years, SMLV has underperformed RWK with an annualized return of 10.42%, while RWK has yielded a comparatively higher 12.69% annualized return.

SMLV

• 1D: -0.67%
• 1M: 4.61%
• 6M: 15.91%
• YTD: 22.24%
• 1Y: 28.48%
• 3Y*: 17.10%
• 5Y*: 10.21%
• 10Y*: 10.42%
• ALL TIME*: 11.06%

RWK

• 1D: -0.93%
• 1M: 1.82%
• 6M: 10.32%
• YTD: 16.44%
• 1Y: 22.46%
• 3Y*: 15.35%
• 5Y*: 12.20%
• 10Y*: 12.69%
• ALL TIME*: 11.47%

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

SMLV vs. RWK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SMLV SPDR SSGA US Small Cap Low Volatility Index ETF	22.24%	5.66%	16.77%	7.52%	-7.69%	27.67%	-1.55%	24.10%	-6.62%	5.68%
RWK Invesco S&P MidCap 400 Revenue ETF	16.44%	10.27%	11.94%	23.76%	-8.19%	34.31%	11.06%	28.20%	-14.65%	13.39%

Correlation

The correlation between SMLV and RWK is 0.80, 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	0.80
Correlation (3Y) Calculated over the trailing 3-year period	0.83
Correlation (5Y) Calculated over the trailing 5-year period	0.86
Correlation (10Y) Calculated over the trailing 10-year period	0.87
Correlation (All Time) Calculated using the full available price history since Feb 21, 2013	0.85

The correlation between SMLV and RWK has been stable across timeframes, ranging from 0.80 to 0.87 - a consistent structural relationship.

SMLV vs. RWK - Sectors Allocation Comparison

Sectors	SMLV	RWK
Financial Services	30.9%	13.0%
Industrials	14.3%	23.3%
Real Estate	11.9%	2.9%
Technology	11.8%	11.8%
Consumer Cyclical	9.0%	21.0%
Healthcare	8.9%	4.7%
Consumer Defensive	3.5%	11.1%
Basic Materials	3.3%	4.4%
Utilities	2.7%	1.6%
Communication Services	2.3%	1.4%
Energy	1.5%	4.9%

Return for Risk

SMLV vs. RWK — Risk / Return Rank

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

SMLV

SMLV Risk / Return Rank: 81
SMLV Sharpe Ratio Rank: 78
SMLV Sortino Ratio Rank: 79
SMLV Omega Ratio Rank: 78
SMLV Calmar Ratio Rank: 89
SMLV Martin Ratio Rank: 79

RWK

RWK Risk / Return Rank: 54
RWK Sharpe Ratio Rank: 53
RWK Sortino Ratio Rank: 59
RWK Omega Ratio Rank: 51
RWK Calmar Ratio Rank: 53
RWK Martin Ratio Rank: 52

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.

SMLV vs. RWK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SPDR SSGA US Small Cap Low Volatility Index ETF (SMLV) and Invesco S&P MidCap 400 Revenue ETF (RWK). 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.

	SMLV	RWK	Difference
Sharpe ratio: Return per unit of total volatility	1.85	1.37	+0.48
Sortino ratio: Return per unit of downside risk	2.68	2.12	+0.56
Omega ratio: Gain probability vs. loss probability	1.34	1.24	+0.10
Calmar ratio: Return relative to maximum drawdown	3.90	2.03	+1.87
Martin ratio: Return relative to average drawdown	10.99	6.54	+4.45

SMLV vs. RWK - Sharpe Ratio Comparison

The current SMLV Sharpe Ratio is 1.85, which is higher than the RWK Sharpe Ratio of 1.37. The chart below compares the historical Sharpe Ratios of SMLV and RWK, 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

SMLV vs. RWK - Drawdown Comparison

The maximum SMLV drawdown since its inception was -42.45%, smaller than the maximum RWK drawdown of -56.49%. Use the drawdown chart below to compare losses from any high point for SMLV and RWK.

Drawdown Indicators

	SMLV	RWK	Difference
Max Drawdown Largest peak-to-trough decline	-42.45%	-56.49%	+14.04%
Max Drawdown (1Y) Largest decline over 1 year	-7.34%	-11.14%	+3.80%
Max Drawdown (3Y) Largest decline over 3 years	-20.40%	-24.58%	+4.18%
Max Drawdown (5Y) Largest decline over 5 years	-20.40%	-24.58%	+4.18%
Max Drawdown (10Y) Largest decline over 10 years	-42.45%	-46.20%	+3.75%
Current Drawdown Current decline from peak	-1.59%	-1.68%	+0.09%
Average Drawdown Average peak-to-trough decline	-5.41%	-7.51%	+2.10%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.60%	3.45%	-0.85%

Volatility

SMLV vs. RWK - Volatility Comparison

SPDR SSGA US Small Cap Low Volatility Index ETF (SMLV) has a higher volatility of 3.75% compared to Invesco S&P MidCap 400 Revenue ETF (RWK) at 3.12%. This indicates that SMLV's price experiences larger fluctuations and is considered to be riskier than RWK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SMLV	RWK	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.75%	3.12%	+0.63%
Volatility (6M) Calculated over the trailing 6-month period	10.09%	11.96%	-1.87%
Volatility (1Y) Calculated over the trailing 1-year period	15.46%	16.49%	-1.03%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.23%	20.94%	-2.71%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.91%	22.88%	-1.97%

SMLV vs. RWK - Expense Ratio Comparison

SMLV has a 0.12% expense ratio, which is lower than RWK's 0.39% expense ratio.

Dividends

SMLV vs. RWK - Dividend Comparison

SMLV's dividend yield for the trailing twelve months is around 2.23%, more than RWK's 1.02% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RWK Invesco S&P MidCap 400 Revenue ETF	1.02%	1.25%	1.11%	1.05%	1.18%	0.85%	0.96%	1.09%	1.22%	0.99%	1.30%	0.92%
SMLV SPDR SSGA US Small Cap Low Volatility Index ETF	2.23%	2.74%	2.68%	2.68%	2.40%	2.12%	2.47%	2.62%	3.15%	7.92%	3.04%	2.63%

Frequently Asked Questions

Can I hold both SMLV and RWK in my portfolio?

SMLV and RWK have a correlation of 0.80, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SMLV or RWK?

SMLV has higher volatility (3.75%) compared to RWK (3.12%). In terms of maximum drawdown, SMLV dropped -42.45% vs RWK's -56.49%.

Which ETF is better, SMLV or RWK?

On 10-year performance, RWK leads with 12.69% vs 10.42% for SMLV. On fees, SMLV is cheaper at 0.12% per year. On volatility, RWK has been the lower-risk option at 3.12%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, SMLV or RWK?

Over the 10-year period, RWK has performed better with a 12.69% return vs 10.42%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, SMLV or RWK?

SMLV is cheaper with a 0.12% expense ratio, compared with 0.39% for RWK.

Which ETF pays a higher dividend yield, SMLV or RWK?

SMLV has the higher dividend yield at 2.23%, compared with 1.02% for RWK.

What is the main difference between SMLV and RWK?

SMLV is categorized as Volatility Hedged Equity, while RWK is Small Cap Blend Equities. SMLV tracks SSGA US Small Cap Low Volatility Index, while RWK tracks S&P MidCap 400 Revenue-Weighted Index. They also come from different issuers: State Street and Invesco. Their fees differ too: 0.12% for SMLV and 0.39% for RWK.

Which has better risk-adjusted returns?

SMLV currently has the higher Sharpe Ratio (1.85 vs 1.37), 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.