On March 18, Reuters noted something I have been following of late:
Concerns about the impact of the coronavirus on corporate America’s balance sheets has tripled the premium investors are demanding to hold even the highest-rated corporate bonds. The difference between the average yield of investment-grade U.S. bonds over virtually risk-free Treasuries widened to 303 basis points (bps) on Wednesday, according to the ICE/BofA investment grade index. That’s up from 101 bps at the start of the year and the highest since July 2009, For riskier high-yield securities, the average spread over Treasuries on Wednesday was 904 bps, the highest since October 2011, and more than 2-1/2 times the rate at the start of the year, using the ICE/BofA high-yield index … This hit to earnings has come at a time when U.S. corporate debt is near all-time highs, as is the size of the so-called triple-B segment of the market – companies one notch above junk status.
The spread between long-term corporate bond rates with credit rating BBB and long-term government bond rates jumped very quickly to almost 4%, which was not quite as high as the 5% or more spreads observed after the collapse of Lehman Brothers. FRED provides a series entitled ICE BofA BBB US Corporate Index Option-Adjusted Spread that dates back to 1997 when this spread was modest. It hit sort of a tidal wave during the turn of the millennium with the collapse of the internet/computer/telecommunication boom and a host of notorious bankruptcies. What happened after the collapse of Lehman Brothers was a tsunami. I did find some Thomson Reuters discussion entitled the implications of the credit crunch for intercompany loans, which talked about market interest rates as of February 2009: