I have searched all over the internet on the sec filings site, edgar, message boards, business wire several paid news subscriptions and i see NO news on this stock. Someone is selling the hell out of it after hours right now down 6%. The only thing I can come up with is the WWE lowered their earnings guidance slightly but I dont know if that would move MSG stock price more than WWE? So if thats not the case then someon has some non public information and is trading on it. TIme will tell.
Hmmm it is suspcious that a few minutes after I posted this the seller has stopped offering the stock down. He was offering an unkown amount that never depleted as people bought it. He was displaying 2900 shares at 23.10 and traded a whole lot of stock. Where is the SEC on these slam dunk easy cases of insider trading? Here is a link to the prints.