UnitedHealth has reached out to the U.S. Securities and Exchange Commission about billionaire investor Bill Ackman's now-deleted post on social media platform X that said he would take a short position in the healthcare conglomerate.

UnitedHealth Group has raised concerns with the top US securities regulator over a social media post by activist investor Bill Ackman, who claimed that the healthcare group could be inflating its profits.

Bill Ackman shared choice comments on UnitedHealth Group on his social media account before deleting his posts. Here's a look at what the hedge funder said.