$Farmmi (FAMI.US)$ Is this stock using pre-market trading to...

$Farmmi (FAMI.US)$ Is this stock using pre-market trading to wash the plate? Yesterday, there was a big drop before the market, with a maximum drop of 20 points, but the closing price still rose. Trading this stock is buying before the market opens, and then taking advantage of the rise during the session to make a quick trade.