Ken Griffin of Citadel sold 5.1 million shares of Palantir, reducing his stake by 91%. Meanwhile, he bought 4.7 million shares of Nvidia, increasing his stake by 194%. Nvidia is the second largest position in Citadel's portfolio, excluding options contracts and index funds.

Palantir Technologies stock (NASDAQ: PLTR) has had a solid run, rising by almost 4x since the beginning of the year to about $66 presently.

For me at the moment, the stock I'm wishing I held in my portfolio is Palantir Technologies (NASDAQ: PLTR). Why do I wish I were a Palantir Technologies shareholder? There are several reasons why I'm wishing I owned Palantir Technologies.

While it is undeniable that Palantir is a high-quality data mining stock with robust AI-powered tailwinds, the company's sky-high valuation -- a price-to-sales ratio near 60 -- requires investors to exercise caution. Here's what astute investors should know about Palantir.

Other companies whose consensus 2025 revenue estimates have increased the most include BlackRock and Coterra Energy.