Why Is Swarmer ( $SWMR ) Stock Down -13.89% Today? (Find out why any stock moved today on Tickeron.) Swarmer (SWMR) shares fell roughly 13.89% on Monday, pulling back sharply after a 10% surge in the prior session. The decline largely erased Friday's rally, which had been driven by enthusiasm over the company's planned acquisition of Ukrainian robotics maker Ratel Robotics. $MSFT $ORCL $PANW $CRWD $XYZ $NTAP $TWLO $MDB $OKTA $ZS