Hi cclose1,
there are two golden accounting rules. Unfortunately I don't know any. :-(
But I can tell you that at the start of the conservatorship the FHFA suspended the statutory requirements for Fannie. And the company now has such a high accumulated deficit that it would exceed the SPSPA line of credit.
Good that you are here now - bright thoughts! Especially the shrinking book value of the SPS is an interesting point, which I have already noticed positively as well. Unfortunately, the value of the SPS has increased recently.
If an exercise of the warrant brings in the book value of the SPS, then Mnuchin can well argue that he gave nothing away by cancelling the SPS. Very important - assuming we continue to lose in court.
GLTY