I was looking at a stock recently, Gamestop GME, and noticed that the float was currently sitting at 250million shares.
https://finance.yahoo.com/quote/GME/key-statistics?p=GME
This seems like potentially a bug/issue, because the other sites are not reporting a float anywhere close to this number, and also the other values which are %'s, do not reflect the 250mil.
But, in checking other sources, they are vastly different than what Yahoo financed showed before today (around 70 million).
What factors can alter/change a stocks total float of shares?