Big shots — they may gather at Davos (6)
I believe the answer is:
skiers
This clue is a double definition.
'big shots' is the first definition.
(a skier is a high shot in cricket)
'they may gather at davos' is the second definition.
(Davos is a Swiss ski resort)
(Other definitions for skiers that I've seen before include "They race on snow" , "Winter sportsmen" , "They glide on the piste" , "They glide across snow for sport" , "Persons on the slopes" .)