After assuming an 8.4 percent ownership stake last fall, Milton had been the largest shareholder in the Stockholm-based AIK football club.
He is reported to have sold his stock to an unknown buyer on Monday for 10.20 kronor ($1.70) per share, the same price for which he purchased the AIK shares in November.
Milton is managing director and chairman of Private Media Group, which produces and sells pornography. When he bought the shares, he said he was interested in taking over the whole club.
“I’m going to buy as many shares as possible,” he said at the time.