What is Lehman Brothers Aggregate Bond Index?
Investopedia says:”The index constructed by Lehman Brothers is considered to be the best total market bond index, as it is used by more than 90% of investors in the United States. Along with the aggregate index, Lehman also has bond indexes tailored to European and Asian investors. This index cannot be purchased, but it is tracked by bond index funds; there also has an iShare exchanged-traded fund (ETF) that tracks the index”.