We all know the news by now: "MF reported its biggest quarterly loss ever yesterday, after having its credit ratings cut a day earlier by Moody’s Investors Service on concern that the broker won’t meet earnings targets and may not be able to manage investments in European sovereign debt. The company’s shares fell 48 percent. “It’s aggregated risk,” said Richard Repetto, an analyst at Sandler O’Neill & Partners LP. The positions in Europe, the further downgrade potential and the quarterly loss, combined to discourage investors, he said." Here is where it gets worse: "Analysts at KBW Inc., led by Niamh Alexander, wrote in a note yesterday that the Moody’s downgrade and lower earnings could cause a ripple effect on the company, raising borrowing costs and triggering collateral calls. “It also exposes MF to collateral calls of up to $5 million,” the note said. “We believe it could also prompt lenders to reduce financing, clients to withdraw assets and trigger the need to recognize losses on certain bilateral over- the-counter and off-balance sheet transactions." Well, judging by the bond yield chart below, MF is done (further confirmed by WSJ reporting that the company has hired restructuring expert Evercore Partners). The only question is whether that ever so handy uber collateral puller, Goldman Sachs, so critical in the extinction of Dexia and of course AIG, will be the party responsible for the death of MF Global? Considering who the current head of MF is, and his "key man status" in the prospectus of the company's recently bonds (which are plummeting today), we somehow doubt it.