No sitting U.S. president had publicly endorsed a stock by its ticker symbol before Friday, April 10. Then President Donald Trump did it.
The president posted on Truth Social, praising Palantir Technologies by name and ticker. “Palantir Technologies (PLTR) has proven to have great war fighting capabilities and equipment. Just ask our enemies!!! President DJT,” he wrote. Within minutes, the stock ticked up roughly 3% from around $123, according to AOL.
It did not last. By early afternoon, Palantir was down 3.7% and sliding again, The Hill reported. Shares closed the day at $128.
The endorsement landed during a brutal stretch for the stock. Palantir had fallen 14% to 16% over the prior five trading days and was down as much as 6% on Friday alone before Trump’s post hit, according to AOL.
The stock is down approximately 24% since the start of 2026, The Hill noted.
The pressure had been building all week. Palantir had been caught up in broader software sector fears about AI disruption, and short seller Michael Burry had intensified his public criticism of the company, arguing Anthropic was eating into its enterprise market.
The post gave Palantir a short-lived boost, but not a reversal. The temporary 3% jump showed that political attention can move a stock in real time.
The fact that it could not hold the gain showed that sentiment alone does not change the underlying debate.
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That debate remains fierce. Palantir trades at approximately 109 times forward earnings against a sector median of around 21 times. Insiders have sold $432.9 million worth of shares in the past three months with zero purchases, according to AOL.
The stock hit a 52-week high of $207.52 in November 2025 and has since fallen more than 38%, Stocktwits reported.
Burry posted on Substack on April 10 that he is sticking with his short position.
He now holds June 2027 $50 puts and December 2026 $100 puts, and said flatly that Palantir “remains wildly overvalued,” according to CNBC.
Burry said he has been short since fall 2025 and has rolled the position several times. “I am not selling these today,” he wrote, according to Stocktwits.
That sets up a striking contrast. The president of the United States is publicly backing the stock, yet one of the market’s most famous short sellers is publicly betting against it.
