I realize that there is probably not a source that can tell us this (or at least my 10 second google search didn't come up with anything), but isn't this important. To value worth of a stock, isn't it best to know how many shares are outstanding? How is it not the same with dollars? We found out the Fed gave out $16 trillion in loans to people all over the world, presumably out of thin air (no way they had it already just lying around). So is there a way to find how many dollars are outstanding, and if not, any guesses to what number we are at now?