US Stocks Stabilize on Final Day of September as PCE Data Looms and SoundThinking Surges on Buyout Deal

US equity futures steadied on September 30, 2026, the last trading day of the month, as investors positioned ahead of a closely watched PCE inflation report while Treasury yields hovered near multidecade highs. S&P 500 and Dow futures edged up roughly 0.2%, with Nasdaq-100 futures moving in a similar range, after the prior session saw megacap technology shares come under pressure from sticky inflation fears.

Apple was a notable drag, falling 2.66% in late-session trading to weigh on the Dow Jones Industrial Average, while Boeing bucked the broader weakness by gaining nearly 2% to lead Dow advancers amid ongoing commercial fleet delivery momentum. Micron also featured among premarket movers, as did Robinhood, which rose 2.3% after announcing it would allow 24-hour weekend trading of its US-listed stocks. Moderna slid in premarket action, and Concentrix dropped 10.4% after missing third-quarter revenue expectations. Walmart pulled back 1.79% alongside broader weakness in consumer staples.

The standout individual move of the morning was SoundThinking, whose shares surged more than 50% in premarket trading after Transom Capital Group announced a definitive agreement to acquire the public safety technology company for $8.00 per share in cash plus a contingent value right of up to $3.00 per share, for total potential consideration of $11.00 per share. Oracle ticked higher on continued institutional interest tied to enterprise cloud and AI infrastructure demand, while BIO-key International gained after announcing new strategic corporate partnerships.