According to this source [2] based on the latest SEC filing, Reed Hastings owns 931,660 shares of Netflix.
Since Jay might own some original Netflix shares, with the new 900k shares addition, perhaps he has eclipsed Reed Hastings in shares ownership.
[1]: http://www.forbes.com/sites/jaysomaney/2016/08/12/why-is-jay...
[2] http://www.davemanuel.com/net-worth/reed-hastings/