BIO is an interesting stock to watch because it seems to trade in a 10 point range. We hit the high end of the range (80) and recently briefly breached 70. My sense is that it will challenge the 80 mark again and the catalyst for that will be the earnings report that's due in a couple of weeks.
Look at the curve for BIO by choosing the "Max" option when looking at that chart. This is a company that has done very well over the years. It began with Norman and now his family basically runs the company. They recently hit the billion dollar mark. This is a company Warren Buffett would buy and hold. Buy and hold it forever or sell it when it peaks, but make no mistake this is a great company. They continue to make profits and are very careful to keep it that way.