Legendary billionaire Ken Griffin makes huge bet on major tech stock

Ken Griffin usually doesn’t marque headlines with a solitary trade, but his latest determination into Meta Platforms (META) is the benignant that compels Mr.Market to beryllium up straight.

The Citadel founder, known for precision position-sizing on with a steadfast dose of skepticism toward hype cycles, went from not being progressive successful the banal astatine each to making Meta 1 of his biggest tech positions successful conscionable 1 quarter.

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That pivot usually doesn’t hap by chance, but erstwhile a legendary capitalist decides a institution is entering a caller section successful its maturation story, and he’s looking to get successful early.

Perhaps what makes his bargain adjacent much stunning is that Griffin openly warned astir “echoes of the dot-com bubble” successful today’s AI market.

Yet erstwhile determination was an opportunity, helium didn’t tally from Big Tech; helium fundamentally ran toward Meta.

Griffin’s moves substance due to the fact that hardly immoderate investors person built specified an enviable way grounds arsenic his.

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He started trading from his Harvard dorm country backmost successful the precocious 1980s, adjacent installing a outer crockery connected the extortion to person real-time quotes.

In 1990, helium launched Citadel with conscionable $4.6 million. Thirty-five years later, that fledgling startup evolved into a  multi-strategy powerhouse managing northbound of $65 cardinal successful assets, known for its quantitative firepower, world-class talent, and progressive culture.

Related: Peter Thiel dumps apical AI stock, stirring bubble fears

Griffin’s investing doctrine is elemental successful that it’s imperative to “Know your edge… if I can’t found what our competitory vantage is going to be, there’s nary constituent starting the journey.”

That subject paid disconnected immensely.

Citadel generated astir $74 cardinal successful cumulative nett profits, the astir of immoderate hedge money successful history. In 2022 alone, it posted a mind-boggling 38% return, on with a grounds $16 cardinal summation for investors.

Currently, his portfolio is worthy a jaw-dropping $608 billion.

Ken Griffin’s Meta bargain felt similar a declaration.

Citadel boosted its Meta involvement by a stellar 12,693% successful Q3 2025, going from virtually zero vulnerability to a hefty1.96 cardinal shares worthy about $1.44 billion.

For a steadfast that’s known for hazard discipline, multiplying a presumption implicit 126-fold successful conscionable 1 4th is fundamentally adjacent to Griffin getting to shouting.