No one can tell you who is satoshi (is satoshi a man or group of developers?) but it's claimed he owns 980,000 bitcoin. How is it claimed? Well, Sergio Lerner traced first mined bitcoins, he found a single mining source and discovered someone mined 19,600 block but never sold/move any of them. Who would do this and trust bitcoin so far? Logically this person can only be Satoshi.