AI news4
Leopold Aschenbrenner's $45B AI hedge fund collapses to $10B after margin calls
Situational Awareness, the fund run by ex-OpenAI researcher Leopold Aschenbrenner, was forced to unwind its entire public stock portfolio after margin calls from prime brokers, selling leveraged bets on names like SK Hynix and CoreWeave to Citadel at a discount. The fund used leverage reported as high as 400%, and its bearish bets against software companies like Adobe went wrong at the same time its bullish AI-infrastructure bets soured.
cnbc.com ↗Why it matters
it's a concrete example of how much leverage has built up around the AI trade, and how fast a high-profile fund can unwind when both sides of a bet go wrong at once.
China's MiniMax ships an open-weight video model hours before ByteDance answers with its own upgrade
MiniMax released H3 on July 30, generating up to 15-second videos in 2K resolution with native stereo sound and motion-transfer editing, with model weights due within days. ByteDance followed within hours with Seedance 2.5, adding enhanced editing features to its own video-generation line. Both moves capitalise on the commercial gap left in China's market since OpenAI suspended Sora 2 there.
bloomberg.com ↗Why it matters
video generation is now a genuine two-horse race inside China, with MiniMax betting on open weights to win developer share while ByteDance defends with a closed, feature-rich upgrade.
Microsoft and Amazon add over $1 trillion in combined market value after blockbuster earnings
Microsoft's market cap rose $616.5B and Amazon's rose $425.6B on July 31 after both companies beat expectations; Amazon became the first company ever to report over $200B in quarterly revenue ($200.61B, AWS up 37%), while Microsoft's Q4 results beat across the board. Alphabet moved the opposite direction, down as much as 15% on capex concerns.
cnbc.com ↗Why it matters
investors are now sharply rewarding AI infrastructure spend that shows revenue payoff (Microsoft, Amazon) while punishing spend that doesn't yet (Alphabet), a real-time test of which AI capex story the market actually believes.
Apple beats Q3 estimates but shares slide 6% on weak guidance and AI margin concerns
Apple reported EPS of $2.02 (vs $1.89 forecast) and revenue of $109.42B, driven by a 22% jump in iPhone sales, but stock fell more than 6% in extended trading after the company cited "supply constraints" in weak forward guidance. Analysts flagged AI-related margin pressure as a factor weighing on the outlook.
cnbc.com ↗Why it matters
it's the clearest sign yet that beating on current-quarter numbers is no longer enough for AI-exposed hardware makers if the market doubts next quarter's AI economics.