Tarragon

( TARR) gained after the New York-based homebuilder said it had achieved major milestones on four projects, two of which are in New Jersey and two in Connecticut. Shares were trading up 90 cents, or 8%, to $12.14.

Open Solutions

(OPEN)

surged after the Glastonbury, Conn.-based company, which makes software for banks, thrifts and credit unions, agreed to be acquired by two private equity firms, Carlyle Group and Providence Equity Partners, in a transaction valued at more than $1.3 billion, including the assumption of debt. Shares were trading up $6.88, or 22.72%, to $37.16.

Greenbrier

(GBX) - Get Report

was higher after the Lake Oswego, Ore., railroad company agreed to acquire Meridian Rail Holdings for $227.5 million in cash. The deal is expected to close within the next 30 days and add to Greenbrier's fiscal 2007 earnings. Shares were trading up $1.81, or 5.8%, to $33.06.

U.S. Shipping Partners

( USS) slipped after the Edison, N.J.-based marine-transportation company was downgraded by Citigroup to sell from hold. Shares fell 71 cents, or 3.7%, to $18.30.

Delta Apparel

(DLA) - Get Report

lost ground after the Duluth, Ga., company cut its first-quarter guidance. The company now expects first-quarter revenue in the range of $61 million to $63 million, down from its earlier guidance of $64 million to $68 million. Delta Apparel's shares were losing $2.38, or 11.6%, to $18.12.

Maidenform

(MFB)

fell after the Bayonne, N.J.-based seller of bras and underwear was downgraded by Goldman Sachs to sell from neutral. Shares lost $1.65, or 8.1%, to $18.65.