About 50 companies, including Bharat Bijlee, Biocon, Century Enka, Colgate, Edelweiss, Hatsun Agro, ICRA, Jindal Saw, Jyothy Laboratories, Kokuyo, KRBL, Mphasis, NIIT, Nelco, Newgen, Onward Tech, Pfizer, PNB Housing, Punjab Chem, PVR, Quess Corp, RPower, Sagar Cements, Sintex Ind, Sharda Cropchem, Sterlite Tech, Supreme Ind, Suntech Realty, UltraTech Cement, VST Industries, YES Bank and Zee Media will declare their September-December quarter results on Thursday.