GDX SEPT 2 25.50 call has 11.685 volume @ 22 cent on 1949 open interest
GDX Sept 2 26.50 call has. 15,483 calls @ 7 cents on. 2608 o.i.
GDX sept 9 27.00 call has 1611 calls @ 12 cent on. 1772 o.i.
Sept 16 GDX calls have 2 strike with over 1000 calls volume