The ownership counter has been never updated since circa 2008 [1], and there has been a 2-for-1 stock split in 2014 so they actually own (819 * 2) stocks * 2228.55 USD per stock ~= 3.65 million USD today.
The Wayback Machine indicates that the ownership counter was steadily increasing until that point, so that's presumably the record. Of course as others pointed out in other threads, this "counter" might be just a fake as well.
[1] https://web.archive.org/web/20080814021128/http://www.gwei.o...