I used to do a lot of studies on these before. I remembered the highest prediction power variable that predicts the “pop” return is the dollar amount, not the days of $adv. also, TSX 60 is a small index. For SP500, such add is about 10% pop. For SP400, maybe 4%. You can look at historical what the “pop” is for past index adds to TSX. I suspect it’s not much.