Palantir’s $368B tug-of-war: One hedge fund buys in as Paul Tudor Jones bails, and bets on quantum

Palantir is turning into a Wall Street Rorschach test. Quant-focused hedge fund Quadrature Capital just bought shares of the data-and-AI company, even as billionaire investor Paul Tudor Jones dumped his entire stake in the same quarter.

The split matters because Palantir isn’t a sleepy stock. With a market value around$368.4 billion, roughly2.39 billion sharesoutstanding, and an average 10-day trading volume near55.94 million shares, big players can move in and out quickly, and sentiment can flip just as fast.

Quadrature adds exposure as institutions already control nearly half the stock

Quadrature’s purchase lands on top of an already heavy institutional footprint. Funds and other large investors hold about45.65%of Palantir’s shares, meaning nearly one out of every two shares sits in professional portfolios.

That kind of ownership can support liquidity, but it can also turbocharge reversals. When institutions crowd into the same trade, rotations can get violent when the narrative changes.

Palantir’s volatility profile reinforces that risk. The stock’sbeta of 1.72suggests it tends to swing far more than the broader market, up or down, making any new institutional buying less a simple “bullish signal” and more a decision to live with bigger price moves.

Paul Tudor Jones sells all 175,212 Palantir shares, and pivots to Rigetti

The loudest headline comes from Jones, the founder of Tudor Investment Corp. Regulatory filings show he sold his entire Palantir position in the second quarter,175,212 shares, a clean exit rather than a trim.

At the same time, Jones opened a new stake inRigetti Computing (RGTI), buying905,700 shares. The message isn’t necessarily “Palantir is doomed,” but it does look like a rotation: out of a heavily watched AI name and into a more speculative bet tied to quantum computing.

One catch: 13F filings show what a manager held at quarter’s end, not the exact timing, price, or motivation behind each trade. Still, a full liquidation paired with a fresh tech position gives investors a clear read, Jones didn’t abandon technology, he changed his angle.

A bullish counterpoint: Kevin Simpson buys despite calling the stock “very expensive”

Not everyone is heading for the exits. Investor Kevin Simpson, founder and CIO of Capital Wealth, said on CNBC that he bought Palantir after what he called “fantastic” first-quarter results, while also acknowledging the stock is “very expensive.”

That’s the classic growth-stock bargain: pay up for execution and momentum, but accept that the downside can be sharp if expectations slip. With a1.72 beta, Palantir can punish investors quickly when the market mood turns.

The Jones-versus-Simpson split is the point. Two seasoned investors can look at the same company, one sees a crowded trade worth leaving, the other sees performance strong enough to justify the premium.

Insiders have been selling, too, about $142.2 million in 90 days

Another data point feeding the debate: insider selling. Over the past90 days, insiders sold about1,054,279 sharesworth roughly$142.2 million.

Insider sales aren’t automatically bearish, executives sell for taxes, diversification, and scheduled plans. But the market watches the pace and size of those sales closely, especially when a stock is already priced for perfection.

Even after those sales, insiders reportedly still own about12.93%of the company, a meaningful stake that suggests leadership remains financially tied to Palantir’s future.

Why Palantir’s trading stats scream “fast moves”

Palantir’s scale and liquidity make it a magnet for both long-term institutions and short-term traders. With2.39 billion sharesoutstanding and nearly56 million sharestrading on an average day, money can flood in, or rush out, without much friction.

And because Palantirdoesn’t pay a dividend, the investment case rests almost entirely on growth and future expectations rather than steady income. That can amplify reactions to earnings, guidance, government-contract headlines, and any shift in how investors value AI-related companies.

The bottom line: Quadrature’s buy, Jones’ full exit, insider selling, and Simpson’s bullish TV pitch all point to the same reality, Palantir remains one of the market’s most hotly contested AI stocks, and the next big move may come from sentiment as much as fundamentals.