Very odd, same question from me! There does not seem to be any news out there available to the average investor. First the stock runs consistently up all year to above $50, then suddenly without any news to speak of, it drops 10% to 45! And this happens while the other X-change are doing just fine and dandy (ICE). So it's not clear. Last time I will ever invest in an options X-change. They are not transparent!!
Nope. Maybe just short sellers trying to push it down. It is frustrating to think that maybe someone knows something but there does not seem to be any actual news event and other MLPs are not reacting to this extreme.