Billionaire investor Stanley Druckenmiller's Duquesne Family Office boosted its position in STMicroelectronics (STM) by 18.75% during the second quarter of 2026, according to a recent SEC filing. The firm added approximately 490,000 shares, bringing its total to 3.10 million shares valued at $232.38 million as of June 30. It is important to remember that 13F filings are released with a delay and reflect positions held at the end of the previous quarter.
This move comes as STMicroelectronics experiences significant growth, particularly in its AI datacenter business, with revenues in that segment showing a substantial year-over-year increase. The company's overall sales jumped 26% in the second quarter, with management anticipating further acceleration driven by AI and satellite communication programs. While Druckenmiller has reportedly been trimming some of his more prominent AI-related holdings, this increased stake in STM suggests a targeted conviction in specific areas of the semiconductor industry.