They are probably Steem co-founders and developers, pseudo Steemit accounts. They are not investors with almost high certainty. Why are not they powering down like @dan or @ned, **most probably these are Steemit Inc's pseudo accounts and STINC is selling, moving and rearranging with other big accounts such as @Steemit2, @alpha etc.**

The big investors, from my own observation, who bought Steem are @ranchorolexo aka @haejin, @trafalgar, @theycallmedan, @fyrstikken, @adsactly, @livingfree, @slowwalker, 	@ngc aka @berniesanders, @donkeypong,  @steemmonsters	(all have 400K or above number of SP).

It is shame that we did not have large number of big investors who have bought Steem from the open market. More ironically, if it was ICO, then will have large number of investors than current numbers.

**However, there are 50M steems in exchanges, most probably 80-90% are bought for investing and trading purpose.**