Quarter Ending March 31st
Hachette Book Group – eBooks accounted for 22% of revenue
Harlequin – Digital sales accounted for 13.6% of total revenue
HarperCollins – eBook sales accounted for 19% of sales in the United States and 11% of sales worldwide. (Source: 10-Q Filing with SEC)
Simon & Schuster – Digial sales accounted for 18% of revenue in the first quarter. 17% was from sales of eBooks and 1% was due to digital sales of audio books.