Icagen Inc. (Nasdaq: ICGN) ballooned in price 43.6 percent to $3.26 Wednesday afternoon. Volume of 3,889,370 shares dwarfed a full-day volume average of around 300,000. MLV Capital Tuesday upgraded ICGN from Hold to Buy.

Microsoft Corporation (Nasdaq: MSFT) traded Wednesday in 33,974,878 shares, better than half its full-day average of 54,463,100. Prices for the stock dipped 1.1 percent to $28.36.

TESSCO Technologies Incorporated (Nasdaq: TESS) toppled 17.1 percent Wednesday to $13.40. Volume for the stock was 127,818 shares, seven times its normal daily volume. TESSCO and GE announced Wednesday they would work together to produce crash-avoidance systems that stop trains without an engineer’s intervention.