Dunno which bank but it occurred to me to size the overnight interest:
SHIBOR's showing 1.8480% for O/N money for today. Assume still roughly accurate for last Thursday. US$9.4bn, 1 day, 365 day year = US$471,591.02 income.
Re "killing" i.e. Profit, you'd need to know their funding rate.
Biting the hand that feeds IT
