Stocks saw mixed trading after the bell Wednesday, and among the big winners was WCI Communities( WCI).

Shares soared 18.9% after the battered homebuilder said it had succeeded in modifying, suspending, or waiving certain covenants in its senior secured revolving credit and term loan agreements through June 30 of next year.

Florida-based WCI also said it had cut down the total commitment available under the revolving credit contract and converted part of it to non-revolving status. The firm furthermore reduced the outstanding amount owed under the term loan agreement and bumped up the pricing on the loans, it said. Shares were up 46 cents to $2.90 in recent late trading.

Oil-and-gas driller

SandRidge Energy

(SD) - Get Report

, of Oklahoma City, upped its 2008 production guidance to 95 billion cubic feet of natural gas equivalent, up 3 Bcfe from its last outlook. The company also raised its capital expenditure budget for the year to $1.25 billion from the prior $1.1 billion. Shares were recently up 1.5% to $32 in light extended trading.

And electronics retailer

Circuit City

(CC) - Get Report

gained 1.3% after

hiring John Harlow as chief operating officer. Shares of the Richmond, Va., company were trading a nickel higher at $3.79.

Other late winners included chipmaker

Marvell Technology

(MRVL) - Get Report

, recently up 1.9% to $11.19; fellow tech name

Sun Microsystems

( JAVA), which tacked on 1% to $15.68; and metals miner

Hecla Mining

(HL) - Get Report

, lately up 1.8% to $9.11.

As for after hours losers, molybdenum miner

General Moly

(GMO) - Get Report

lost 2.1% to $9.58; chipmaker

ASML

(ASML) - Get Report

gave up 1.8% to $25.13; and retailer

Dick's Sporting Goods

(DKS) - Get Report

was off 1.1% to $27.71 in recent trading.