VALLEY FORGE, Pa.--(BUSINESS WIRE)--AmerisourceBergen Corporation (NYSE:ABC) today reported that in its fiscal year 2012 second quarter, ended March 31, 2012, diluted earnings per share were $0.81, a 5.2 percent increase. Revenue in the quarter was $20.1 billion, up 1.6 percent. The Company also reiterated its expectations for fiscal year 2012 diluted earnings per share in the range of $2.74 to $2.84. All the results are presented in accordance with U.S. generally accepted accounting principles (GAAP).