BUZZ — Stitch Fix plunges after downbeat revenue forecast
* Shares of online personal styling service firm Stitch Fix fall 19% to $2.3 in premarket trading * Co forecasts Q1 revenue between $323 mln and $328 mln, lower than analysts' estimates of $343.2 mln - LSEG data * SFIX also posts Q4 revenue of $324.4 mln, missing analysts' estimates of $325.6 mln as active clients decl