Assuming your question is serious, there was no event to cause the price drop. We've had a nice run up for the last couple weeks, and a brief shakeout was inevitable. It's a speed bump. If you have any powder available, buy more. i am at every level and it is working out quite nicely.
because all good news was priced in, all the heavenly expectations of approval, endless sales, miraculous cures, etc... all that was already priced in, baked in good in the stock price.
so there is no other news or expectation to take it higher anymore. well unless they make a pill for eternal youth, then all bets are off. then it can rally more, but until then, you have to tell yourself: a stock that went up from $4 to $30 has already priced in heaven and earth and everything in between