Barron's says "it is just a passing squall" ... Andrew Bary
"HISTORY SUGGESTS THAT STOCKS MAY DO WELL in the next two months. There have been 38 days since 1979 when the S&P 500 has suffered a single-session loss of 3% or more. The average gain in the ensuing 60 days has been 6.9%, with the index rising in 31 of the 38 cases, according to Citigroup research." ....
More than that:
Look at the charts of OSIP, late April, 2004.
The share price almost tripled from 38 to the intraday high of 98.7 when Tarceva trial result was announced. It was a mediocre outcome since the drug prolonged the median survival of lung cancer patients only by several months.
This can happen with VRTX shares too on April 10th (only 5 wks to go) provided the present oversold condition continues through that time and PROVE 1 12wk SVR is better than 75%. I am optimistic.