Here’s what’s hot in the market today: Pharmaceutical company Icagen got a major boost from hints that Pfizer would purchase the company; EXCO Resources dropped as shareholders grew shifty waiting for big changes; Universal Forest Products was hurt by poor trends in the lumber industry; and toy company LeapFrog got a boost from playing coy with potential bidders.

Continucare (NYSE: CNU), a healthcare company that operates primary care medical centers nationwide, was up more than 30% on nearly 11 million shares.  Metropolitan Health Networks (AMEX: MDF) said it would pay $416 million in cash and stock for Continucare and its shares were trading above $6.

Icagen (NASDAQ: ICGN) was up nearly 130% on almost 3 million shares. Shares were trading around $5 after a Friday report from the AP suggested that Pfizer (NYSE: PFE) is considering acquiring Icagen. The acquisition still hasn’t been confirmed.

EXCO Resources (NYSE: XCO) fell about 9% on nearly 9 million shares traded in the oil and gas company. EXCO CEO Douglas Miller is attempting to take the company private, but according to The Wall Street Journal

, he is having problems financing the take over. Shares were trading around $17.

LeapFrog Enterprises (NYSE: LF) was up more than 3% on more than 850,000 shares. LF, a toy and educational products company, saw shares climb above $4 after CEO John Barbour said at the Reuters Global Consumer and Retail Summit that the company was open to acquisition

Universal Forest Products (NASDAQ: UFPI) announced on Friday it would seek to lower costs through layoffs following a drop in net sales this year and lower prices for lumber. The stock fell almost 11% to trade below $24.

As of this writing, Anthony John Agnello did not own a position in any of the stocks named here. Follow him on Twitter at @ajohnagnello and become a fan of InvestorPlace on Facebook.