Shares of Bristol-Myers rose to $ 28 in electronic trading from the $ 26.90 close on the New York Stock Exchange .
Bristol shares rose $ 1.30 , or 5 percent , to $ 28.20 , after closing at $ 26.90 on the New York Stock Exchange .
Full classes of 48 each are booked through the end of next month , he said , and the agency plans to double its classes in January .