by Calculated Risk on 3/09/2009 01:02:00 PM

Branden suggests Buffett is looking at the Merrill Lynch Corporate Master Index OAS (Option adjusted spread).

Click on table for larger image in new window.

This graph shows the OAS for the index for the last 2 years.

This is a broad index of investment grade corporate debt:

The Merrill Lynch US Corporate Index tracks the performance of US dollar denominated investment grade corporate debt publicly issued in the US domestic market.

This does show widening spreads.