Billionaire Investing Legend Buys $4,200,000,000 of Assets in Massive Bet on AI and Tech Stocks

Billionaire Citadel CEO Ken Griffin simply poured an enormous amount of cash into massive bets on the way forward for know-how and synthetic intelligence.
For starters, Citadel’s newest 13F submitting shows Griffin ramped up stakes in six Magnificent Seven shares throughout Q3 2025, including over $4.2 billion in worth based mostly on September thirtieth closing costs.
He doubled Citadel’s Microsoft (MSFT) place with 1.99 million new shares value $1.03 billion.
Meta (META) noticed a 12,693% surge, with Citadel including 1.95 million shares valued at $1.43 billion. The agency’s Apple (AAPL) stake greater than doubled through 2.56 million shares, including $652 million.
Tesla (TSLA) elevated 279% with 1.1 million shares value $489 million. Alphabet (GOOG) holdings jumped 200% on 1.25 million shares, including $304 million.
Nvidia (NVDA) rose 21% with 1.73 million shares valued at $323 million.
In the meantime, Griffin trimmed Amazon (AMZN) by 39%, promoting 2.1 million shares value $461 million.
Exterior of the Magazine 7, Griffin added smaller positions in quantum shares Rigetti (RGTI), amounting to 51,700 shares and $1.5 million, together with D-Wave (QBTS) at 169,000 shares for $4.2 million.
Griffin additionally purchased a brand new 650,000 share stake in Summit Therapeutics (SMMT), value $13 million.
General, Citadel’s portfolio grew to $618 billion.
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