SIEGY - Maxwell Tech +3% on Siemens grid energy system deal September, 05 2018 06:01 PM Siemens AG ADR Maxwell Technologies (NASDAQ:MXWL) is up 3% after hours after announcing a partnership with Siemens (OTCPK:SIEGY) on a new grid energy storage subsystem. More news on: Maxwell Technologies, Inc., Siemens AG ADR, Tech stocks news, Stocks on the move, Read more ...