a) Stock-broker b) Share transfer agent, c) Banker to an issue, d) Trustee of trust deed, e) Registrar to an issue, f) Merchant banker, g) Underwriter, h) Portfolio manager, i) Investment adviser j) Depository, k) Depository Participant l) Custodian of securities, m) Foreign institutional investor, n) Credit rating agency or o) Venture capital funds, p) Mutual fund