Was idly pondering who would be right about MDX given there is both a long and short tip for this one. After Friday's trade, it could end up being a winner for both. Occasionally we do have long and short tips for the same stock but I've never really taken notice of the outcome so I don't know if there has ever been a situation where both have been "winners". Probably easier to achiever than it initially appears, given the volatility of some stocks.
