According to Good Morning America, (which, incidentally, has run a number of features on unclaimed property, see here, here, and here) is reporting that a Missouri resident is about to receive the largest unclaimed property payout ever - amounting to $6.1 million. According to GMA's research, the $6.1 million might be the biggest unclaimed property owner payment in history.
The obvious question you may be asking is how in the world did someone misplace $6.1 million? Actually, they didn't. According to the article, the funds represent stock that was reported to the state "generations" ago, and continued to grow.