Stock Movers: Starbucks AI Spurs Microsoft & IBM Declines; PepsiCo and Costco Fall


Bloomberg Stock Movers: Starbucks builds in-house AI software as Microsoft and IBM slide; PepsiCo reports weak Q2 domestic performance; Costco misses comps, shares drop.

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What stands out

Bloomberg highlighted a neat, messy moment: Starbucks is building in-house artificial intelligence (AI) tools that could replace software it now buys from Microsoft and International Business Machines, a move that pressured vendor stocks, while PepsiCo flagged softer domestic food and drink demand and Costco missed June comparable sales. Those three headlines compress a larger story into one trading day, namely how cost cutting, shifting consumer budgets, and AI-driven vendor churn can rearrange the winners among big-cap tech and staples.