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According to The Wrestling Observer Newsletter, Endeavor, the parent company of TKO (which includes WWE and UFC), has purchased $68 million of TKO stock. They now own over 59% of the company.
TKO stock price rose to $174.55 per share at closing on Thursday, which makes it worth $14.174 billion. Since Endeavor owns 59%, that would reportedly make the total value $34.570 billion, with most going to UFC and WWE. UFC would have a higher value by a small amount.