Negative Rates Do Not Invalidate Bond Mathematics
Gross says negative yields are surprising but do not require rewriting duration or net-present-value mathematics. Investors may rationally pay governments for secure custody, but practical rate cuts are limited because physical cash in a mattress becomes an alternative once charges become sufficiently negative.
- Negative yields were once considered theoretically implausible
- Investors may pay for government custody of money
- Duration and bond mathematics still hold
- Physical cash creates a practical lower bound on rates
“I don't think you have to to over ruled Macaulay and duration a considerations that you know, the mathematics will always hold.”
“Ultimately, you can you can just put your money in a mattress and not pay a fee.”