DTCC’s ETF Portfolio Composition File includes more than 1,900 U.S.-listed ETFs, along with the portfolios’ constituents. To facilitate trend and performance analysis of standard portfolios, DTCC also offers the ETF Historical Portfolio Composition File. You can obtain the entire historical data file (from 11/1/2007 to the present), or have on-demand access to historical data in one-year increments. In addition, for timelier portfolio updates, DTCC offers the ETF PCF Near-Real-Time Supplemental file.