It isn't likely with Sanofi owning 22E% of REGN and doing a lot of joint development with it.
I agree, Every time it has dropped below the lower Bollinger Band in the last year has been a buying opportunity. Usually good for 30 to 40 points in a month.
I have a double in a small position and am still holding. Have a dtrailing stop well above entry price, but expect LGCY to survive and resume dividends on the O's at some point, as well as pay the arrearages. JMHO