McGraw-Hill Faces Breakup Pressure as Jana Discloses Stake

McGraw-Hill Cos. may accelerate its plan to spin off businesses, under pressure from hedge fund Jana Partners LLC, which bought a stake in the textbook publisher and owner of Standard & Poor’s.

McGraw-Hill’s breakup value would be about $55 a share, according to analysts at Lazard Capital Markets and JPMorgan Chase & Co. That’s 33 percent more than the company’s $41.41 closing price yesterday on the New York Stock Exchange. McGraw-Hill rose $3.02, or 7.3 percent, to $44.43 at 4 p.m. today, the biggest advance since September 2009.