It's interesting to watch a stock that is touted by one of the great gurus...or even just positively commented on... then look out the next day. Note their letters usually don't come out during the day but after hours. This is likely to give all equal opportunity but it also maximizes the lift. The subscribers move in like ants and buy up the sp. It's like an oasis in the desert to those who know how to capitalize on this. They monitor the Gurus, their stock picks and watch for the cue, buying in the next day if they don't have shares already, then like clockwork they sell at days end to collect their near guaranteed profit. Note that the sp drops a fair bit on this action. It's just one of the many reasons why the sp of any number of companies takes a dive at the end of the day. Now that's just phase one. Next is taking advantage of it on day two or three or four as sentiment is still hot on the stock and subscribers see this as a chance to get in cheap. After all it was just a healthy "pullback" or profit taking right? The second day these folks are even better prepared to play the buyers and note that the stock yet again takes a drop at the end of the day. This is an exciting time for the players who basically are like cats with the mouse between the paws. Shareholders are wondering what the heck is going on and cursing those who sold at the days end. The sp seems to keep pingponging when it should go up. Go figure. Guess why it doesn't. Now the momentum begins to die down and the game begins afresh at a later time when something new comes to ignite excitement. It's likely partially responsible for how phrases like "buy on rumour sell on news" became codes by which to invest/trade for many.