STMicroelectronics shares slide to multi-year low on weaker Q3 revenue guidance

STMicroelectronics' (STMMI) stock fell to a price level not seen since 2025, deepening a downward trend that began around June 2026. The decline followed the company's third‑quarter guidance released on 23 July, which projected revenue of about $3.70 billion, slightly below analysts' consensus of $3.76 billion. Despite a modest improvement in the gross‑margin outlook to 37.0% (up from 34.8% in Q2), the revenue shortfall triggered a sell‑off amid broader skepticism toward the hyperscaler‑related semiconductor sector, which has also pressured the Nasdaq 100.

Market sentiment was further strained by a recent more than 10% drop in the Nasdaq 100, reflecting investors' concerns about large‑scale tech exposure. The STMicroelectronics move illustrates how earnings guidance can amplify existing market anxieties, even when the underlying performance metrics are only marginally off expectations.