An interesting thing happened when we were combing through the Fed's Maiden Lane 1 portfolio. After going through holding after holding of crap, that would make junk indignant if one were to call the Fed's adopted holdings of muni CDS, Subprime mezz bonds, and Agency CMO such, we ended up looking at the rate hedges section. As is disclosed by the Fed, the FRBNY holds 5000 TYM0 puts, 3825 TYH0 puts, short 4000 FVH0, short 7828 TYH0, short 2240 USH0, and is short a bunch of eurodollar positions. Also, the interest rate exposure is in thousands so the Fed has about 3 trillion in notional swap exposure. Now Maiden Lane is supposed to be an adopted, run off (or, as Geithner likes to boast, run on) portfolio, presumably without active management. Which is why we were surprised by the presence of the TYH0 and TYM0 positions: these did not exist at the time the Fed created Maiden Lane I! In fact TYM0 did not exist until March of 2009!
And that's just the beginning: why is the Fed concerned about interest rate risk on a tiny $25 billion MBS portfolio, when its DV01 on its $2.4 trillion in SOMA holdings is $1 billion, and is very much actively unmanaged.