 Shares of Alerus Financial Co. NASDAQ:ALRS gapped up before the market opened on Tuesday . The stock had previously closed at 18.90, but opened at 20.80. Alerus Financial shares last traded at 20.80, with a volume of 12 shares changing hands. Separately, Piper Sandler reduced their target price on Alerus Financial from 22.00 to 21.00 ... 