National Securities Clearing Corporation (NSCC) A subsidiary of the DTCC that provides centralized clearing, information, and settlement services to the financial industry. Investopedia Says: The NSCC and DTC play a major part in the settlement and clearing of securities transactions. They are the largest providers of these services worldwide. Related Terms: Clearing Clearing House Depository Trust & Clearing Corporation - DTCC Depository Trust Company - DTC Threshold List |