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.