No idea who the owner is, but they appear have a solid 2600+ BTC in that address... making payments of between 0.1-0.9 BTC to multiple addresses.
For whatever reason, they have chosen not to create a multi-output transaction, (ie. 1 input -> Several Outputs) but have created individual transactions for each output (1 input -> 1 output excl. change).
Given that there a groups of payments with the same value, my best guess would be that they are some sort of coin exchange, and people just happen to be converting/buying the same value of BTC so they end up with the same amounts... ie. several people buying USD$300.00 worth of BTC, several buying $200.00 etc.
Or they could be an investment operator processing withdrawl or payment requests for a number of people who have the same number of shares or whatever, so they end up with the same payout amount...
Or it could just be a very rich person sending money to his friends and family... that is kind of the beauty of BTC... it helps hide a lot of the "who/what/why"