A few month ago I released the SP500 and Nasdaq100 survivorship bias free index constitution (link). The data is build on NORGATE premiumdata my preferred data vendor. I’m considering creating and releasing this for CSI data as well. Making that fit the CSI symbology is quite an effort. In order to do that I would like to better gauge the demand for such a product under the same commercial conditions. Please send me an email hassler.frank (at) gmail.com in case you are interested.