As I see it. Friday there was an inducement for some to sell ptsc stock. Enough to easily bundle 600 thousand shares for sale in Germany by some market maker. Remember the reason for Knight Capital"s survival, was there secret technology. I believe it is nothing more than the ability to serve kool aid when they feel it necessary. Buying or selling. It is the abilities of the market makers to control ptsc. Beat them at that. Hold and don't sell.