Williams Companies Inc. (NYSE: WMB) shares gained 7% to $29.71. Share volume was 27.3 million, or better than quadruple its daily average, a day after it said it would divide its pipeline and exploration business into two separate public companies.

Brocade Communication Systems (Nasdaq: BRCD) sold like hotcakes Thursday, trading in 28.5 million shares Thursday, already doubling its daily average. BRCD prices grew 5.3% to $6.03, with earnings set to be released after Thursday’s closing bell.

UltraLife Corporation (Nasdaq: ULBI) plummeted 11.1% in price Thursday to $5.44. Volume was 395,000 shares, better than triple its daily average, on reporting quarterly operating income of $1.6 million on revenue of $50.4 million.