This one is a doozy. Not only because three reports taken at 3-month increments all agree with one another, but because the myth of self-publishing only working in certain genres is busted. Turns out that indies do indeed dominate in those genres, but they have taken significant share everywhere else as well.
I have indie friends who think we are crazy to urge Hachette to lower their ebook prices and be reasonable for the sake of their readers and their authors, and you can see why in this data. Indie authors are producing great works at unbeatable prices, and readers are rewarding them with market share. In this snapshot, indies as a cohort have overtaken all Big 5 authors combined when it comes to daily royalties earned on the Kindle Store. Unreal.
Also some info on DRM here. Short version: It’s worse than useless; it might be hurting your sales.