Just because they exist, doesn't mean they are in circulation... They are being held by the company and their CEO has repeatedly said that it would be incredibly stupid and self-destructive to release all of them or close to that and diluting the price for those who own it (which couldn't happen if they were all in circulation). Some of them are even in special funds that are completely locked for "x" amount of months to give investors more confidence in the fact that it won't get diluted. Which again could not happen if every coin was in circulation and available for trading.