Ironically (?) after reading all the criticism of private sector lenders relying on ratings agencies rather than internal analysis I see this:
By Rachel Layne and Scott Lanman
The Fed is setting up the special fund to buy commercial paper, and will start the program on Oct. 27. The U.S. Treasury will make a $50 billion deposit into the fund as an indication of support. The Fed said the maximum amount of commercial paper that could be funded by the facility is about $1.8 trillion.
The central bank will buy only debt with the top short-term ratings of A-1, F1 and P-1 given by Standard & Poor’s, Fitch Ratings and Moody’s Investors Service respectively. The facility provides for 90-day borrowing which may help lengthen the time periods for which liquidity is available.