As of late 2018, investment-grade corporate bonds offered an average yield of 4.25%, according to Moody's Seasoned AAA Corporate Bond Yield figures. This represents a substantial increase from the Bond-Yields.com – 12 Month Recap Year-In-Review: July 1, 2015 to June 30, 2016 Here is the overall summary of the 42 bond reviews and recommendations (from 35 different issuers) that were sent to our clients over the past twelve months, between July 1, 2015 and June 30, 2016. The HQM yield curve uses data from a set of high quality corporate bonds rated AAA, AA, or A that accurately represent the high quality corporate bond market. The HQM methodology projects yields beyond 30 years maturity out to 100 years maturity to get discount rates for long-dated pension liabilities.