From Pearson’s 2012 half-year results press release:
Penguin’s worldwide profits totaled £441 million for the first half of 2012, dipping by £16 million (-4%) compared to the same period last year.
Penguin ebook revenues up 33% and now almost 20% of Penguin’s revenues.
. . . .
Penguin’s first half trading was affected by three factors: a lighter publishing schedule, the exceptional performance of competitor bestsellers The Hunger Games and Fifty Shades of Grey and continued pressure on physical book publishing and retailing. We expect Penguin’s publishing and its competitive performance to be stronger in the second half of the year, and we expect the structural change to continue. In the second half, Penguin will continue to take action to adapt to the rapidly-changing industry environment and will be expensing integration costs associated with its acquisition of Author Solutions.
Link to the rest at Pearson