 Shares of PagerDuty Inc. PD, -4.36 were falling about 1 in premarket trading Friday after Monness, Crespi, Hardt Co. analyst Brian White downgraded the stock to neutral from buy. The last several months have been an especially painful experience for those next-gen, software companies still young to the capital markets, and we believe the path forward will prove treacherous, White wrote. 