ISCG vs. PBW

Last updated Jun 25, 2026

ISCG (iShares Morningstar Small-Cap Growth ETF) and PBW (Invesco WilderHill Clean Energy ETF) are both Small Cap Growth Equities funds - ISCG tracks the Morningstar US Small Cap Broad Growth Extended Index while PBW tracks the The WilderHill Clean Energy Index (AMEX). Both are passively managed. Over the past 10 years, ISCG returned 11.99%/yr vs 9.59%/yr for PBW. A 0.77 correlation means they provide meaningful diversification when combined. ISCG charges 0.06%/yr vs 0.61%/yr for PBW.

Performance

ISCG vs. PBW - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Morningstar Small-Cap Growth ETF (ISCG) and Invesco WilderHill Clean Energy ETF (PBW). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ISCG achieves a 14.95% return, which is significantly lower than PBW's 24.55% return. Over the past 10 years, ISCG has outperformed PBW with an annualized return of 11.99%, while PBW has yielded a comparatively lower 9.59% annualized return.

ISCG

• 1D: 0.86%
• 1M: 3.23%
• YTD: 14.95%
• 6M: 11.88%
• 1Y: 29.63%
• 3Y*: 17.77%
• 5Y*: 4.83%
• 10Y*: 11.99%

PBW

• 1D: -2.93%
• 1M: -11.65%
• YTD: 24.55%
• 6M: 18.06%
• 1Y: 96.16%
• 3Y*: 2.81%
• 5Y*: -14.04%
• 10Y*: 9.59%

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

ISCG vs. PBW - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ISCG iShares Morningstar Small-Cap Growth ETF	14.95%	12.88%	13.35%	23.13%	-26.75%	-1.26%	43.41%	27.66%	-6.91%	24.68%
PBW Invesco WilderHill Clean Energy ETF	24.55%	53.96%	-30.77%	-20.03%	-44.55%	-29.86%	204.82%	62.58%	-14.11%	39.92%

Correlation

The correlation between ISCG and PBW is 0.73, 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	0.73
Correlation (3Y) Calculated over the trailing 3-year period	0.75
Correlation (5Y) Calculated over the trailing 5-year period	0.80
Correlation (10Y) Calculated over the trailing 10-year period	0.76
Correlation (All Time) Calculated using the full available price history since Mar 3, 2005	0.77

The correlation between ISCG and PBW has been stable across timeframes, ranging from 0.73 to 0.80 - a consistent structural relationship.

ISCG vs. PBW - Sectors Allocation Comparison

Sectors	ISCG	PBW
Industrials	24.4%	34.2%
Technology	22.0%	14.4%
Healthcare	16.8%	-
Financial Services	9.9%	1.5%
Consumer Cyclical	8.8%	14.9%
Real Estate	4.8%	-
Energy	3.3%	11.2%
Basic Materials	3.2%	16.2%
Communication Services	2.8%	-
Consumer Defensive	2.7%	1.1%
Utilities	1.1%	6.5%

Return for Risk

ISCG vs. PBW — Risk / Return Rank

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

ISCG

ISCG Risk / Return Rank: 54
ISCG Sharpe Ratio Rank: 52
ISCG Sortino Ratio Rank: 51
ISCG Omega Ratio Rank: 46
ISCG Calmar Ratio Rank: 59
ISCG Martin Ratio Rank: 62

PBW

PBW Risk / Return Rank: 73
PBW Sharpe Ratio Rank: 80
PBW Sortino Ratio Rank: 65
PBW Omega Ratio Rank: 61
PBW Calmar Ratio Rank: 88
PBW Martin Ratio Rank: 70

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.

ISCG vs. PBW - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Morningstar Small-Cap Growth ETF (ISCG) and Invesco WilderHill Clean Energy ETF (PBW). 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.

	ISCG	PBW	Difference
Sharpe ratio: Return per unit of total volatility	1.60	2.27	-0.67
Sortino ratio: Return per unit of downside risk	2.27	2.67	-0.40
Omega ratio: Gain probability vs. loss probability	1.27	1.33	-0.06
Calmar ratio: Return relative to maximum drawdown	2.60	4.55	-1.95
Martin ratio: Return relative to average drawdown	9.92	11.56	-1.64

ISCG vs. PBW - Sharpe Ratio Comparison

The current ISCG Sharpe Ratio is 1.60, which is comparable to the PBW Sharpe Ratio of 2.27. The chart below compares the historical Sharpe Ratios of ISCG and PBW, 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

ISCG vs. PBW - Drawdown Comparison

The maximum ISCG drawdown since its inception was -57.72%, smaller than the maximum PBW drawdown of -89.02%. Use the drawdown chart below to compare losses from any high point for ISCG and PBW.

Drawdown Indicators

	ISCG	PBW	Difference
Max Drawdown Largest peak-to-trough decline	-57.72%	-89.02%	+31.30%
Max Drawdown (1Y) Largest decline over 1 year	-11.43%	-21.24%	+9.81%
Max Drawdown (3Y) Largest decline over 3 years	-26.71%	-68.04%	+41.33%
Max Drawdown (5Y) Largest decline over 5 years	-37.80%	-84.50%	+46.70%
Max Drawdown (10Y) Largest decline over 10 years	-41.48%	-89.02%	+47.54%
Current Drawdown Current decline from peak	-0.33%	-68.61%	+68.28%
Average Drawdown Average peak-to-trough decline	-11.60%	-62.90%	+51.30%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.00%	8.35%	-5.35%

Volatility

ISCG vs. PBW - Volatility Comparison

The current volatility for iShares Morningstar Small-Cap Growth ETF (ISCG) is 5.91%, while Invesco WilderHill Clean Energy ETF (PBW) has a volatility of 17.67%. This indicates that ISCG experiences smaller price fluctuations and is considered to be less risky than PBW based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ISCG	PBW	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.91%	17.67%	-11.76%
Volatility (6M) Calculated over the trailing 6-month period	13.60%	31.40%	-17.80%
Volatility (1Y) Calculated over the trailing 1-year period	18.60%	42.61%	-24.01%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.03%	43.41%	-20.38%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.17%	39.03%	-15.86%

ISCG vs. PBW - Expense Ratio Comparison

ISCG has a 0.06% expense ratio, which is lower than PBW's 0.61% expense ratio.

Dividends

ISCG vs. PBW - Dividend Comparison

ISCG's dividend yield for the trailing twelve months is around 0.58%, less than PBW's 1.25% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ISCG iShares Morningstar Small-Cap Growth ETF	0.58%	0.61%	0.84%	0.77%	0.92%	0.62%	0.10%	0.27%	0.40%	0.52%	1.19%	0.64%
PBW Invesco WilderHill Clean Energy ETF	1.25%	0.79%	2.84%	3.68%	4.21%	1.71%	0.44%	1.45%	2.04%	1.28%	2.68%	1.53%

Frequently Asked Questions

Can I hold both ISCG and PBW in my portfolio?

ISCG and PBW have a correlation of 0.73, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ISCG or PBW?

PBW has higher volatility (17.67%) compared to ISCG (5.91%). In terms of maximum drawdown, ISCG dropped -57.72% vs PBW's -89.02%.

Which ETF is better, ISCG or PBW?

On 10-year performance, ISCG leads with 11.99% vs 9.59% for PBW. On fees, ISCG is cheaper at 0.06% per year. On volatility, ISCG has been the lower-risk option at 5.91%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, ISCG or PBW?

Over the 10-year period, ISCG has performed better with a 11.99% return vs 9.59%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, ISCG or PBW?

ISCG is cheaper with a 0.06% expense ratio, compared with 0.61% for PBW.

Which ETF pays a higher dividend yield, ISCG or PBW?

PBW has the higher dividend yield at 1.25%, compared with 0.58% for ISCG.

What is the main difference between ISCG and PBW?

ISCG tracks Morningstar US Small Cap Broad Growth Extended Index, while PBW tracks The WilderHill Clean Energy Index (AMEX). They also come from different issuers: iShares and Invesco. Their fees differ too: 0.06% for ISCG and 0.61% for PBW.

Which has better risk-adjusted returns?

PBW currently has the higher Sharpe Ratio (2.27 vs 1.60), 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.