DFT band structure calculations of zincblende CdS, CdSe, CdTe, HgS, HgSe, HgTe with PBE, PBE+SOC, and HSE+SOC. Dense sampling about the Gamma, L, X, and K high-symmetry points are included for calculation of effective masses. Relaxed structures and optical properties of symmetrically unique configurations of zincblende Hg(x)Cd(1-x)S and Hg(x)Cd(1-x)Se alloys with a 16-atom supercell. The GQCA weights at 300K are also provided.