It's unusual in that someone seems to be splitting his coins into wallets, rather than transferring to exchanges, which has been a bit more common with recent price changes. All his movements and splittings are very anal methodical, so in a way it's easier to say 'it's just one guy'.
If it's not an exchange, it's a rarity, a segwit guy with 200k coins. Some are saying he's european and active since 2011.
itfa i've no idea, just nosey intrigued. it may be being looked properly at on other threads but i've not looked about much.