CTEX vs. SMOG

Last updated Jun 4, 2026

CTEX (ProShares S&P Kensho Cleantech ETF) and SMOG (VanEck Low Carbon Energy ETF) are both Alternative Energy Equities funds - CTEX tracks the S&P Kensho Cleantech Index while SMOG tracks the MVIS Global Low Carbon Energy Index. Both are passively managed. Over the past 3 years, CTEX returned 16.51%/yr vs 10.86%/yr for SMOG. Their correlation of 0.81 suggests significant overlap in exposure. CTEX charges 0.58%/yr vs 0.61%/yr for SMOG.

Performance

CTEX vs. SMOG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ProShares S&P Kensho Cleantech ETF (CTEX) and VanEck Low Carbon Energy ETF (SMOG). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CTEX achieves a 39.97% return, which is significantly higher than SMOG's 18.16% return.

CTEX

• 1D: -4.08%
• 1M: 24.08%
• YTD: 39.97%
• 6M: 41.91%
• 1Y: 154.30%
• 3Y*: 16.51%
• 5Y*: —
• 10Y*: —

SMOG

• 1D: -1.20%
• 1M: 0.08%
• YTD: 18.16%
• 6M: 17.43%
• 1Y: 42.14%
• 3Y*: 10.86%
• 5Y*: 1.76%
• 10Y*: 12.70%

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

CTEX vs. SMOG - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
CTEX ProShares S&P Kensho Cleantech ETF	39.97%	67.74%	-20.38%	-10.25%	-20.38%	-6.68%
SMOG VanEck Low Carbon Energy ETF	18.16%	33.36%	-9.33%	1.42%	-29.92%	8.01%

Correlation

The correlation between CTEX and SMOG is 0.77, 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	0.77
Correlation (3Y) Calculated over the trailing 3-year period	0.78
Correlation (All Time) Calculated using the full available price history since Oct 1, 2021	0.81

The correlation between CTEX and SMOG has been stable across timeframes, ranging from 0.77 to 0.81 - a consistent structural relationship.

CTEX vs. SMOG - Sectors Allocation Comparison

Sectors	CTEX	SMOG
Industrials	48.9%	28.1%
Technology	34.7%	8.4%
Utilities	11.5%	33.2%
Energy	3.0%	6.6%
Consumer Cyclical	1.8%	21.7%
Basic Materials	-	1.2%
Communication Services	-	-
Consumer Defensive	-	-
Financial Services	-	0.6%
Healthcare	-	-
Real Estate	-	-

Return for Risk

CTEX vs. SMOG — Risk / Return Rank

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

CTEX

CTEX Risk / Return Rank: 88
CTEX Sharpe Ratio Rank: 94
CTEX Sortino Ratio Rank: 84
CTEX Omega Ratio Rank: 80
CTEX Calmar Ratio Rank: 94
CTEX Martin Ratio Rank: 89

SMOG

SMOG Risk / Return Rank: 66
SMOG Sharpe Ratio Rank: 62
SMOG Sortino Ratio Rank: 56
SMOG Omega Ratio Rank: 56
SMOG Calmar Ratio Rank: 86
SMOG Martin Ratio Rank: 73

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.

CTEX vs. SMOG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProShares S&P Kensho Cleantech ETF (CTEX) and VanEck Low Carbon Energy ETF (SMOG). 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.

	CTEX	SMOG	Difference
Sharpe ratio: Return per unit of total volatility	3.68	2.07	+1.61
Sortino ratio: Return per unit of downside risk	3.79	2.69	+1.10
Omega ratio: Gain probability vs. loss probability	1.48	1.35	+0.14
Calmar ratio: Return relative to maximum drawdown	7.18	4.80	+2.38
Martin ratio: Return relative to average drawdown	19.95	13.62	+6.33
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CTEX vs. SMOG - Sharpe Ratio Comparison

The current CTEX Sharpe Ratio is 3.68, which is higher than the SMOG Sharpe Ratio of 2.07. The chart below compares the historical Sharpe Ratios of CTEX and SMOG, 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

	CTEX	SMOG	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.68	2.07	+1.61
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.07	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.50	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.11	0.07	+0.04

Drawdowns

CTEX vs. SMOG - Drawdown Comparison

The maximum CTEX drawdown since its inception was -70.31%, smaller than the maximum SMOG drawdown of -84.39%. Use the drawdown chart below to compare losses from any high point for CTEX and SMOG.

Drawdown Indicators

	CTEX	SMOG	Difference
Max Drawdown Largest peak-to-trough decline	-70.31%	-84.39%	+14.08%
Max Drawdown (1Y) Largest decline over 1 year	-21.62%	-8.82%	-12.80%
Max Drawdown (3Y) Largest decline over 3 years	-56.83%	-28.72%	-28.11%
Max Drawdown (5Y) Largest decline over 5 years	—	-47.86%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-51.10%	—
Current Drawdown Current decline from peak	-4.08%	-14.61%	+10.53%
Average Drawdown Average peak-to-trough decline	-41.94%	-52.47%	+10.53%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.77%	3.10%	+4.67%

Volatility

CTEX vs. SMOG - Volatility Comparison

ProShares S&P Kensho Cleantech ETF (CTEX) has a higher volatility of 15.79% compared to VanEck Low Carbon Energy ETF (SMOG) at 7.43%. This indicates that CTEX's price experiences larger fluctuations and is considered to be riskier than SMOG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CTEX	SMOG	Difference
Volatility (1M) Calculated over the trailing 1-month period	15.79%	7.43%	+8.36%
Volatility (6M) Calculated over the trailing 6-month period	29.89%	15.46%	+14.43%
Volatility (1Y) Calculated over the trailing 1-year period	42.32%	20.49%	+21.83%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	43.30%	25.12%	+18.18%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	43.30%	25.73%	+17.57%

CTEX vs. SMOG - Expense Ratio Comparison

CTEX has a 0.58% expense ratio, which is lower than SMOG's 0.61% expense ratio.

Dividends

CTEX vs. SMOG - Dividend Comparison

CTEX's dividend yield for the trailing twelve months is around 1.50%, more than SMOG's 1.33% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CTEX ProShares S&P Kensho Cleantech ETF	1.50%	2.17%	0.57%	0.12%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
SMOG VanEck Low Carbon Energy ETF	1.33%	1.57%	1.64%	1.58%	1.32%	0.44%	0.06%	0.00%	0.62%	1.25%	2.12%	0.56%

Frequently Asked Questions

Can I hold both CTEX and SMOG in my portfolio?

CTEX and SMOG have a correlation of 0.77, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CTEX or SMOG?

CTEX has higher volatility (15.79%) compared to SMOG (7.43%). In terms of maximum drawdown, CTEX dropped -70.31% vs SMOG's -84.39%.

Which ETF is better, CTEX or SMOG?

On 3-year performance, CTEX leads with 16.51% vs 10.86% for SMOG. On fees, CTEX is cheaper at 0.58% per year. On volatility, SMOG has been the lower-risk option at 7.43%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, CTEX or SMOG?

Over the 3-year period, CTEX has performed better with a 16.51% return vs 10.86%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, CTEX or SMOG?

CTEX is cheaper with a 0.58% expense ratio, compared with 0.61% for SMOG.

Which ETF pays a higher dividend yield, CTEX or SMOG?

CTEX has the higher dividend yield at 1.50%, compared with 1.33% for SMOG.

What is the main difference between CTEX and SMOG?

CTEX tracks S&P Kensho Cleantech Index, while SMOG tracks MVIS Global Low Carbon Energy Index. They also come from different issuers: ProShares and VanEck. Their fees differ too: 0.58% for CTEX and 0.61% for SMOG.

Which has better risk-adjusted returns?

CTEX currently has the higher Sharpe Ratio (3.68 vs 2.07), 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.