UPWARD MOVERS:
CME Group Inc., (NYSE CME) +$11.70; Experienced record volume yesterday in several of its most actively traded financial contracts, marking its second highest trading day for combined total and electronic trading volume. Total trading volume for Thursday was 23,341,621 futures and options on futures contracts. Electronic volume reached 19,092,834 contracts for the day.

RARE Hospitality Int'l (NASDAQ: RARE) +$9.74: Darden Restaurants, Inc. (NYSE: DRI) will make a tender offer to purchase RARE\'s outstanding common stock for $38.15 per share in cash, or approximately $1.4 billion in total purchase price. RARE closed at $27.14 per share today.

Precision Castparts Corp. (NYSE: PCP) +$6.90; Stock seeing slight rebound after dropping for 6 straight sessions.

Leap Wireless (NASDAQ: LEAP) +$6.55; JP Morgan adds Leap to the 'Focus List'.

Ambac Financial Group, Inc. (NYSE: ABK) +$5.00; Stock bouncing back after share price has been slashed 32% since the beginning of July.


DOWNWARD MOVERS:
Accuray Incorporated (NASDAQ: ARAY) -$3.37; Reports Q4 non-GAAP EPS of $0.05, 2 cents better than estimates. Revenues were $44.0 million vs. $44.1 million consensus.

American Railcar Industries (NASDAQ: ARII) -$2.31; Longbow Research downgrades American Railcar Industries from Neutral to Sell.

Sotheby's (NYSE: BID) -$1.95; Stock dropping with no specific news releases.

Cognizant Technology Solutions Corp. (NASDAQ: CTSH) -$1.50; Stock losing ground with no specific news releases.

Darden Restaurants, Inc. (NYSE: DRI) -$1.50; Stock falls after company announces it will acquire RARE.