This reedditor looks at trading volume to show eos seems to be aggressively dumping the eth it raised and leading to an eth sell off.
If they are doing this on purpose (which I do not think they are doing) it's very smart.
##1) they lock in the money raised by the ico
2) they benefit from future rebound in eth
they ensure subsequent eos rounds will raise eth at a lower price and they could benefit from a rebound in eth while they still hold fiat reserves.
3) they hurt a competitor (ethereum)
by holding down market cap
4) they hurt competitors( all other blockchains)
making it harder for them to ico (as people fear dumping) and compete with eos.