Antpool and F2Pool stay almost supernaturally at 25% each, never deviating by more than a few blocks. With the amount hashrate has changed lately for that to remain true collusion is likely.

Antpool is bitmain's pool and F2Pool is discuss fish. Both chinese companies. One a hardware manufacturer and one a hardware consumer.For the last few months despite the hash rate changing wildly both have managed to stay in near perfect lockstep of each having 25% and both adding up to 50%. Never getting off by more than 3%.It seems very likely to me that at this point they are simply one pool or are working as one pool and now control 50% of the network and have found a 25% split between two apparent pools the most appealing option.What other explanation is there? The rapid change in hashrate should have disturbed their perfect 25/25 distribution at least a little bit but they hold it nearly perfectly. With no jockeying that would indicate they are reacting to each other and no gain or loss relative to the other pools. via /r/Bitcoin http://bit.ly/1OoYotI