I don't know where to go to find that kind of information.How far under water is this guy?
I have to assume he was buying all the way down from the top and that he didn't start in mid August.
you can check the blockchain. the blockheight are listed on the left. He's using a public block explorer listed on top. You don't have to use the same one. You can build your own or google other ones
Find his address containing the amount of BTC's on the picture. See the transfers (all incoming) and the dates and figure out the $ costs
