After Michael Lewis’s much-buzzed about 60 Minutes appearance at the beginning of the month, Flash Boys, the author’s exploration of high-speed trading on Wall Street, was the most-talked about book on social media in April. Flash Boys bucked the trend of women dominating digital conversations about books, with men originating 61% of the commentary about the title.

“This is the first time that a book without a movie tie-in has topped the list since last October when Allegiant was the top book,” said Jeff Costello, v-p of CoverCake, which measures how books are faring on social media.

However, movie tie-ins still showed strong overall in online chatter last month. John Green’s The Fault in Our Stars hit #2 in the leadup to the hotly anticipated June premiere of the film adaptation. Following at #3 was Divergent, still enjoying windfall from the March 21 release of the movie version of Veronica Roth’s book. Todd Burpo’s Heaven Is for Real landed at #9 after the adaptation hit theaters April 16.

Rank Title Author BookScan* Scale** Male Female
1 Flash Boys Michael Lewis 18 10 61% 39%
2 The Fault in Our Stars John Green 23 9 41 59
3 Divergent Veronica Roth 31 8 42 58
4 Allegiant Veronica Roth 6 6 38 62
5 Natchez Burning Greg Iles N/A 5 44 56
6 Let’s Just Say It Wasn’t Pretty Diane Keaton N/A 4 44 56
7 Think Like a Freak Steven D. Levitt N/A 4 58 42
8 Gone Girl Gillian Flynn 9 3 45 55
9 Heaven Is for Real Todd Burpo 7 2 33 67
10 Smart Money Smart Kids Dave Ramsey 1 1 48 60

* For the week ended april 27. if the book was not published before april 27, it is listed as not available.

** How many conversations took place about the book in question for every 10 comments about book #1