S&P 500 Gains and Losses Today: Solar Stocks, Airline Shares Fall; Jabil Climbs

On Tuesday, June 17, 2025, the S&P 500 fell 0.8% amid escalating Middle East tensions and President Trump's tougher stance on Iran. Renewable energy stocks, particularly solar companies like Enphase Energy (ENPH, -24%) and First Solar (FSLR, -18%), plunged following a Senate budget proposal to phase out clean-energy tax credits. Conversely, Jabil (JBL, +8.9%) soared on strong AI-driven demand, while oil refiners like Valero Energy (VLO, +2.9%) gained as crude oil prices rose.

Analysis

Major U.S. equity indices experienced a downturn on Tuesday, June 17, 2025, with the S&P 500 slipping 0.8%, the Dow Industrials declining 0.7%, and the tech-heavy Nasdaq falling 0.9%, largely attributed to escalating geopolitical tensions as President Trump adopted a more stringent stance towards Iran. This nervousness was particularly evident in the renewable energy sector, where shares plunged following a Senate budget proposal supporting a phase-out of clean-energy tax credits for solar and wind by 2028, while notably extending incentives for hydro, nuclear, and geothermal power until 2036; Enphase Energy (ENPH) shares plummeted 24%, and First Solar (FSLR) shares fell 18%, with AES Corp. (AES) also sinking 8.1%. Conversely, Jabil (JBL) shares soared 8.9% to a record high, driven by better-than-expected quarterly earnings and an uplifted full-year guidance, credited to strong AI-related demand in its Intelligent Infrastructure segment, despite softness in its EV, renewables, and 5G markets. The airline industry faced challenges, with JetBlue (JBLU) shares losing 7.9% after announcing route cuts and cost-saving measures due to soft travel demand, a sentiment that also pulled down United Airlines (UAL) by 6.2% and Delta Air Lines (DAL) by 4.3%, compounded by rising oil prices. T-Mobile US (TMUS) shares slid 4.1% following reports of SoftBank (SFTBY) selling a substantial portion of its stake, potentially to fund AI ventures. The heightened Middle East concerns, however, boosted crude oil futures, benefiting oil and gas companies like Valero Energy (VLO), whose shares advanced 2.9%. CrowdStrike Holdings (CRWD) also saw a 2.6% gain after announcing a new AI-powered incident response service for Amazon Web Services customers.

Key Decisions for Investors

• Investors should exercise increased caution due to heightened geopolitical risks potentially impacting broader market stability and specific sectors sensitive to Middle East tensions.
• Re-evaluate investments in solar and wind energy companies like ENPH and FSLR given the significant headwind from the proposed phase-out of tax credits, while noting the differentiated, more favorable proposed treatment for hydro, nuclear, and geothermal power.
• Maintain or seek exposure to companies demonstrating strong growth driven by artificial intelligence, such as Jabil (JBL) and CrowdStrike (CRWD), as this theme shows resilience even amidst market volatility.
• Closely monitor airline stocks for continued impacts from soft travel demand and fluctuating oil prices, as cost-cutting measures by carriers like JetBlue (JBLU) may indicate broader sector weakness.
• Consider the implications of large institutional stake sales, such as SoftBank's divestment from T-Mobile (TMUS), on individual stock performance and liquidity, and note the seller's strategic capital reallocation towards AI.