Hard to say. I certainly don't know enough to offer my own valuation. According to the articles I posted a little while ago, most seem to think fair value would be somewhere between $2.50 and $3 a share. But of course much depends on whether they sell the whole company or break it up; sentiment seems to favor the sale of the whole thing at the moment.
And I have no idea what difference it'll make if Getco and Virtu start a bidding war.