The sports card hobby has attracted its share of high-profile collectors in recent years, but few have a background in investing quite like Kevin O’Leary. Long before getting involved with cards, he was already collecting everything from watches to guitars, with a strong interest in alternative assets.
Kevin O’Leary just backed an $11 million baseball card sale and wants 5% of his portfolio in collectibles, but the strategy that works for a billionaire may quietly wreck a retirement account.
