Miles 2 Go used to be the one who would regularly create these threads, so I figured I'd fill in.
Sales figures for the month of May are fully released up on Comichron now;
6. Amazing Spider-Man 21 - 92,538
10. Amazing Spider-Man 22 - 78,102
15. Venom 14 - 66,858
22. Amazing Spider-Man 20.HU - 52,728
23. Symbiote Spider-Man 2 - 52,088
46. Spider-Man Life Story 3 - 37,771
52. Miles Morales Spider-Man 6 - 33,538
63. Friendly Neighborhood Spider-Man 6 - 30,752
78. War of Realms Spider-Man & League of Realms 1 - 26,255
86. Spider-Gwen Ghost Spider 8 - 24,423
90. Spider-Man City At War 3 - 23,674
93. War of Realms Spider-Man & League of Realms 2 - 23,367
95. Spider-Man/Deadpool 50 - 22,760
96. Superior Spider-Man 6 - 22,580
101. War of Realms Journey Into Mystery 2 - 21,919
106. War of Realms Journey Into Mystery 3 - 20,955
114. Champions 5 - 19,336
128. Marvel Team-Up 2 - 17,513
Interesting takeaway is that both Gwen's and especially Miles' books experienced bumps this month. I'm assuming the announcement that Gwen is going to be (partially) added to the 616 is going to do her favors.