ITG Starting to BuyITG has bought small (relatively speaking... I mean for an instituional buyer) numbers of shares periodically in the past and pushed the bid this morning. Maybe Geologic's involvement reinforced their own DD and they'll start to accumulate more shares.
Not sure how many shares they'll want but the pickings are pretty slim. Then again, anonymous might unload 500 shares every 30 minutes for a long time yet.