Genoptix Inc. (Nasdaq: GXDX) shares rose 25.8% to $24.85 after Swiss drug maker Novartis AG (NYSE: NVS) said it would buy the cancer-diagnostic specialist for $470 million. Volume for the stock was 18.75 million shares, compared to a daily average of 461,835.
General Electric Company (NYSE: GE) dealt in 58.5 million shares Monday, surpassing its full-day average of 57 million. Share prices moved higher 1.4 percent to $20.02.
American Apparel Inc. (AMEX: APP) dropped 13.2 percent to $1.12 Monday. Volume for the stock was 794,910 shares, beating out its daily average of 578,569. The apparel maker is in talks to bring in an external restructuring adviser to try to revive growth and appease creditors.