Cleantech has long been a sector where policy, technology, and investor sentiment collide unpredictably. ProShares S&P Kensho Cleantech ETF (NYSEARCA:CTEX) surged 68% in 2025, far outpacing the S&P 500’s 15% gain. But with just $5.4 million in assets and a policy cliff looming in mid-2026, investors face a critical question: is this a consolidation opportunity or a momentum trap?
Built for the Green Energy Transition
CTEX targets companies developing clean energy technologies including solar, wind, energy storage, and grid infrastructure. The fund holds 30 equally weighted positions dominated by industrials (63%) and semiconductors (23%), with top holdings including T1 Energy, Energy Vault, GE Vernova, and Array Technologies. Unlike utility-heavy competitors, CTEX emphasizes equipment manufacturers and technology providers building the infrastructure.
The return engine is pure capital appreciation tied to cleantech adoption cycles. With a 30-day SEC yield of 0.02%, this ETF generates no meaningful income. Investors are betting on growth driven by decarbonization mandates, corporate net-zero commitments, and renewable energy buildouts.
Performance Validated, But Timing Matters
CTEX delivered a 68% year-to-date return through December 31, 2025. The fund’s RSI cooled from overbought levels above 80 in October to a neutral 47 by year-end, suggesting momentum has normalized after the explosive rally.
However, the fund’s $5.4 million in assets raises serious liquidity concerns. Small ETF assets can lead to wider bid-ask spreads, difficulty exiting positions, and closure risk if flows don’t materialize. The 0.58% expense ratio is reasonable for a thematic fund, but investors need conviction that AUM will grow to justify the concentration and liquidity tradeoffs.
The Policy Cliff and Speculative Holdings
CTEX faces two material risks. First, the One Big Beautiful Bill Act (OBBBA) enacted in July 2025 imposes a June 30, 2026 deadline for many clean energy tax credits. Projects must begin construction by that date to qualify for incentives that have driven solar and wind deployment.
Second, the portfolio includes deeply unprofitable speculative positions. Plug Power, the fund’s eighth-largest holding at 3.3%, posted a $2.1 billion loss in 2024 on just $629 million in revenue. The company burns nearly $1 billion annually with a negative 139% operating margin. Enphase Energy, another top holding, has seen revenue decline 43% from peak levels. These holdings amplify volatility and create permanent loss risk if hydrogen or solar markets fail to scale.
Who Should Avoid CTEX
This ETF is inappropriate for income-focused investors given the 0.02% yield. Risk-averse investors or those with short time horizons should avoid CTEX due to its tiny asset base, policy sensitivity, and exposure to cash-burning companies. The fund requires a multi-year outlook and tolerance for 50%+ drawdowns.
Consider ICLN as a Larger, More Diversified Alternative
The iShares Global Clean Energy ETF (NASDAQ:ICLN) offers similar cleantech exposure with critical advantages. ICLN manages $1.9 billion in assets versus CTEX’s $5.4 million, providing vastly superior liquidity and lower closure risk. The fund charges 0.39% annually compared to CTEX’s 0.58%, and holds 138 positions versus CTEX’s 30, reducing single-stock concentration risk.
ICLN’s portfolio tilts toward utilities (22%) alongside industrials (22%) and technology (12%), providing more defensive exposure through established renewable energy operators. Top holdings include Bloom Energy, First Solar, and Nextracker, with smaller allocations to speculative names like Plug Power (1.3% versus CTEX’s 3.3%).
CTEX works best as a small, speculative allocation for investors who believe cleantech will accelerate despite policy headwinds and can tolerate illiquidity and volatility, but the fund’s tiny asset base and concentrated exposure to money-losing companies make it a high-risk bet on sector timing rather than a core portfolio holding.
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