Huh, I hadn’t noticed that they didn’t tie up the potential fees on your winnings. Hypotheses:
bug introduced when they moved from gross margining to net margining years and didn’t reconsider fees withholding
doesn’t actually matter; they don’t give up ~anything by letting some people carrying small balances make free trades
it’s really hard to abuse this into free trades repeatedly
the withholding here is too complicated and feel-bad to explain
other
Huh, I hadn’t noticed that they didn’t tie up the potential fees on your winnings. Hypotheses:
bug introduced when they moved from gross margining to net margining years and didn’t reconsider fees withholding
doesn’t actually matter; they don’t give up ~anything by letting some people carrying small balances make free trades
it’s really hard to abuse this into free trades repeatedly
the withholding here is too complicated and feel-bad to explain
other