Cumulative returns shows the returns by decile or quantile (you can select with the “slice” drop down in the top right corner) for the stocks in the universe. These are equal weight returns for each quantile (20%) or decile (10%), meaning if you had 100 stocks in your universe Decile 1 (D1) would be stocks ranked 1 through 10 and Decile 2 (D2) would be stocks ranked 11 through 20.
The stocks in each decile or quantile are recalculated as of each rebalance period and their returns are compounded on a daily basis until the next rebalance period.
