Auto Stock Eyes Worst Day Since March After Earnings

General Motors (GM) stock is down 7% following a disappointing Q2 profit, which fell 35% due to a $1.1 billion impact from tariffs, despite the company beating revenue expectations. This sharp decline, marking GM's worst daily drop since March, has pushed the stock into negative territory for 2025. Concurrently, options activity has surged sevenfold, indicating a significant shift towards bearish sentiment among traders, evidenced by elevated put/call volume and open interest ratios.

Analysis

General Motors (GM) is experiencing a significant stock repricing, with shares declining 7% despite the company reporting a second-quarter earnings and revenue beat. The market is focusing on the severe erosion of profitability, as quarterly profit fell 35% year-over-year, a direct result of a $1.1 billion negative impact from tariffs. This sell-off is technically significant, pushing GM stock into negative territory for the year with a 6.7% loss and marking its worst potential daily performance since March. Investor reaction has been sharp, with options volume surging to seven times the daily average. While today's flow shows a mix of call and put activity, it occurs against a backdrop of deep pre-existing bearishness. The 50-day put/call volume ratio of 1.27 and the short-term open interest ratio of 1.25, ranking in the 98th and 90th percentiles respectively, confirm that options traders have been positioned for downside risk, a sentiment now validated by the market's reaction to the tariff-driven profit decline.

Key Decisions for Investors

• Investors should re-evaluate forward earnings models to incorporate the demonstrated $1.1 billion sensitivity to tariffs, as macroeconomic headwinds are proving capable of overriding operational performance and revenue beats.
• Given the sharp price decline below key technical levels and the confirmed bearish sentiment in the options market, it may be prudent to hold off on initiating new long positions until the stock finds a stable support level.
• For those with existing positions, the elevated options volume and implied volatility could present an opportunity to hedge downside risk by purchasing puts, particularly as the market digests the negative profitability outlook.