"A complete list revealing the top-downloaded girl groups in 2015 has surfaced on Instiz, with some surprising results! The download figures were pulled from the Gaon Chart."
1. Red Velvet:
1st Mini Album “Ice Cream Cake” (1,081,868) +
1st Full Album “Dumb Dumb” (1,220,337) +
Digital Single “Wish Tree” (110,830)
= 2,412,935
2. Girls’ Generation:
Digital Single “Catch Me If You Can” (152,373) +
2nd Single Album “PARTY” (937,716) +
5th Full Album “Lion Heart” (1,188,138)
= 2,278,227
3. SISTAR:
3rd Mini Album “SHAKE IT” (1,652,340)
4. EXID:
2nd Mini Album “AH YEAH” (1,165,825) +
Digital Single “HOT PINK” (461,509)
= 1,627,334
5. miss A:
3rd Mini Album “Colors” (1,328,093)
= 1,328,093
6. GFRIEND:
1st Mini Album “Season of Glass” (681,925) +
2nd Mini Album “Flower Bud” (1,013,776)
= 1,284,363
7. AOA:
3rd Mini Album “Heart Attack” (1,268,506)
8. A Pink:
Digital Single “Promise U” (81,625) +
2nd Full Album “Pink MEMORY” (1,134,477)
= 1,216,102
9. MAMAMOO:
2nd Mini Album “Pink Funky” (1,188,720)
10. Wonder Girls:
3rd Full Album “REBOOT” (1,084,248)
11. f(x):
4th Full Album “4Walls” (986,828) +
Digital Single “12:25 Wish List” (85,013)
= 1,071,841
12. Girl’s Day:
Digital Single “Hello Bubble” (224,252) +
2nd Full Album “LOVE” (835,296)
= 1,059,548
13. 4Minute:
Digital Single “Cold Rain” (147,424) +
6th Mini Album “Crazy” (703,242)
= 850,666
http://www.soompi.com/2016/01/19/2015-girl-group-music-download-rankings/