Sezzle plunges on quarterly results; top analyst says 'bar was higher'

** BNPL firm Sezzle's SEZL.O shares slide 19.7% to $111.90 premarket

** SEZL Q2 results beat expectations on Thursday after market hours

** Northland Capital analyst Mike Grondahl who is the joint top rated analyst for SEZL, per LSEG data, says it demonstrated continued growth but adds that the "bar was higher"

** Not a "beat and raise" quarter we have been accustomed to - Grondahl

** Maintains "outperform" rating, lowers PT to $150 from $180

** All 3 brokerages covering stock rate it "buy" or higher; median PT $180 - data compiled by LSEG

** As of last close, SEZL stock up 226.8% YTD