We wrote this article mid July 2018:
Terrific acceleration at BioLife and it's no surprise that the share price has gone parabolic. Revenue growth is accelerating, gross margins are increasing, there is a great deal of operational leverage and the company generates cash. Unfortunately, valuation is already such that we can't advice buying at this time.
BioLife Is Going Parabolic - BioLife Solutions, Inc. (NASDAQ:BLFS) | Seeking Alpha
But looking at this chart, it has come off its highs considerably and is becoming very interesting..
