Comment Comment by pooper The whole concept makes no sense for me.If someone deposits cash, don't offer any interest. Keep it as cash (or something backed by the US dollar).I can give Vanguard USD 5000 and feel safe thinking I can buy VTSAX anytime.This is all these exchanges need to do. Just execute lots of trades and you will make a few pennies every time.Why is it so difficult? parent pooper 3 years ago
If someone deposits cash, don't offer any interest. Keep it as cash (or something backed by the US dollar).
I can give Vanguard USD 5000 and feel safe thinking I can buy VTSAX anytime.
This is all these exchanges need to do. Just execute lots of trades and you will make a few pennies every time.
Why is it so difficult?