US Treasuries that have less than 6 months till maturity allow for 100x leverage, as the regulatory requirement is to put 1% of the market value down for each bond.
So a $1,000,000 account could hold $100,000,000 of 3 month bonds and earn 1.06% a year. No need to mention that the risk of the bond declining merely 1% in value would destroy the account.
Could that same purchase be used as collateral for 30 year bonds, which yield 2.90%?
Somehow I think I'm getting the process backwards, but could you borrow 100 times an account's worth at 1.06% and invest at 2.90%? where you would continually roll over the 3 month maturity bonds, and ultimately pocket the difference for 1.84% annually on $100,000,000 USD. Making your return on $1,000,000 to be 184%, for an extra $1,840,000 per year.
If not, I will have a followup question