State Space Models

All state space models are written and estimated in the R programming language. The models are available here with instructions and R procedures for manipulating the models here here.

Thursday, November 3, 2011

The Collapse of MF Global and Maybe Jefferies

The Random Stock Walker is always interested in the collapse of Wall Street firms. When MF Global declared bankruptcy this week, the event caught our attention. The primary question is "Could the collapse have been predicted by the stock's history?" Investors are always in the position of having really very little information about critical activities that might get a firm in trouble, the unknown unknowns.

Someone out there in the market probably knows about the unknowns it's just not you, the individual investor. Jim Cramer of CNBC makes the argument that the "smart money" is more likely to know and that since the smart money drives the market, retail investors have to comb through the entrails of stock prices, analyst statements and conference calls to figure out which way the smart money and thus the market is moving. In other words, there should be some evidence of impending collapse in historical stock prices.

The time plot above graphs the dynamic attractor for MF Global (MF). The attractor is primarily driven by the world economy and, what is more, the attractor is very sensitive to world oil prices. On the Google stock page (here), MF global is described as a "...broker in markets for commodities and listed derivatives." The current description of "the trade that killed MF Global" (here) involves are "repo-to-maturity" trade in EU sovereign debt. This may well be the tipping point trade that brought down the house of cards but the Random Stock Walker models suggest that activities in the oil market would have eventually killed the firm also.
The reason that the Jefferies Group, an investment bank (JEF), became involved in the MF Global collapse is that JEF was involved in the financing of the sovereign debt deal. As a result, JEF was downgraded by the Eagan-Jones Rating Agency and questions began to swirl around Jefferies. One of the questions involved "lack of transparency," those unknown unknowns again.

The Random Stock Walker attractor model shows a similar fate for JEF and a similar linkage to world commodity markets creating the collapse. Of course, it will be difficult to verify all this and it's only a statistical result. Regardless, there isn't really any reason for retail investors to be in either of these two stocks after the 2007 Financial Crisis.

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