compare 12.4% in 4 days vs 18.4% in 24 hr
https://blockchain.info/pools?timespan=4days
https://blockchain.info/pools?timespan=24hours
maybe they will soon be at saturation and will release chips, finally?
It's not unheard of for a pool to have a run of good luck like that. A period of a couple of weeks would be a better indicator.
they were at less than 10% on July 10, so it is already a putative "ramp" of at least 11 days.