Legacy Bancorp Inc. (Nasdaq: LEGC) added 42.21 percent in price Wednesday to $12.23. Volume of 140,153 shares towered over its daily average of 5,931. The Pittsfield, Mass., bank-holding company will acquired by Berkshire Hills Bancorp Inc. for $13 a share in stock and cash.

Citgroup Inc. (NYSE: C) traded in 146,817,000 shares, making it a volume leader as it made progress against its daily average of 554,823,000. Share prices slid 0.74% to $4.70.

CAMAC Energy Inc. (Amex: CAK) gave back 24.24 percent in price Wednesday to $2.00, on volume of 2,872,639 shares, nearly six times its full-day average. The energy firm entered into definitive agreements yesterday to sell in a registered direct offering an aggregate of approximately 9.09 million shares of its common stock at a price of $2.20 per share.