CASSIDICompetitive Analysis and Structure Source Instrument for Depository Institutions (CASSIDI) is a tool for performing competitive analysis. CASSIDI contains information for the entire country and is updated on a regular basis.Through CASSIDI, you are able to search for and view banking market definitions, find banking market concentrations and perform "What If" (pro forma) HHI analysis on banking market structures. CASSIDI also offers an array of mapping options, enabling you to view banking market boundaries, find depository institutions and compare market concentrations across banking markets.