How can outfits like "American Express" (whatever the f*ck that is) offer "1.5% APY Savings Accounts", when niggas like me can borrow from Interactive Brokers for 0.75%/annum? Yes, I have to pledge
collateral to IB -- but just how does IB get its funding anyways? Because certainly IB is out there competing for deposits to fund the margin accounts as well. Someone plz explain. Can IB...