"Palantir Technologies (PLTR) has proven it has great war capabilities and equipment. Just ask our enemies!!!" Trump wrote on Truth Social on Friday.
When the statement was made, the share price was $124.10 on the New York Stock Exchange, but rose immediately and, just under an hour later, it was $128.60.
Palantir, founded in 2003, has built its success on software and technical AI solutions for mostly defense companies.
The company is controversial, including for its involvement in government programs to control migrants and for its ties to Israeli authorities.
