You can sort any existing report by any column in the report by clicking the column. So for example on the Winnings tab if you click on a day and choose the "Daily Hands" report for the very bottom tab then click the Amount Won column it will sort by that amount (click it again to reverse the sort).
If that is sufficient you are all set, otherwise you'll need to create a custom report. I do believe there is a report that will get you your hands sorted by win or loss amount within a certain range in the
repository that you should be able to download, though.