Rates

A Guide to the World’s New Benchmarks After Libor

Here’s how to make sense of the dizzying array of acronyms that have sprung up in major markets.

For about 50 years, the London interbank offered rate has helped determine the cost of borrowing around the world, from student loans and mortgages to interest-rate swaps and collateralized loan obligations.

Libor, derived from a daily survey of bankers who estimate how much they would charge each other to borrow, was simple, effective, ubiquitous, and seemingly reliable.