Bug Fixes : If Index is formed relatively new then it will compare with broader market index.
e.g. IF index is NIFTY_OIL_AND_GAS which do not have weekly level data for the Magic (SI) yet as data is available for lesser period. Hence we will compare stocks under this Index with Larger Market Index line CNX500.
And if you need to use another index than CNX500, then you can always change it in input parameter.