Prohost Letter #380 Investors Concerns, Excitments and Expectations PART 2  REGENERON On Friday, July 24, Regeneron (REGN) stock closed at $541.l85 DOWN $14.76. The reason for loss was good news announcing that the FDA approved its cholesterol-lowering drug Praluent! Before the unreasonable sell on good news phenomenon, Regeneron had scored a new all time high on proven accomplishments (Read articles posted in past Prohost Letters). …