As it currently stands, whoever it is has doubled their investment since initially buying into Bitcoin (September of 2017). They used the Chinese exchange Huobi.com to make their first deposit to this address, along with many other transactions.
https://www.walletexplorer.com/wallet/e8fb61953c163500
thats why the chart of bitcoin and the other altcoins went up. if its really the wall street then we get bloody days
Please don't be a shiller by speculating why prices of Bitcoin goes up or down. This had very little to do with the price of Bitcoin. If you look at the address and its history, you'll see that there has been trading every month since December, right around the middle of the month. Even during the huge dips in mid-January, this address was still active with transactions.
Either way, whoever owns this account is now a Bitcoin billionaire.
If I'm going to make an educated guess, I'm thinking that the address belongs to a financial firm in China that operates as a hedge or collective; I don't believe that this address belongs to a single individual. And some of the recent microtransactions make me believe that there is definitely some sort of automation happening, as well.