VIDEO: Analyst Moves: OPEN, AMG

OpenTable (OPEN) was downgraded by Oppenheimer (OPY) from outperform to perform with a price target of $54 as the firm believes the stock price is fully valued, and competing products may take away some market share from the company. Shares are lower by about four percent.

VIDEO: Analyst Moves: TSN, BIIB

Tyson Foods (TSN) was upgraded by Bank of America/Merrill Lynch (BAC) to buy from underperform with a price target of $27, as improved fundamentals in the beef and chicken market should add to the bottom line. Shares are higher by about 1.4 percent.