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Industry Open-Sources Model For Infamous CDS

GlobalEcho writes "Credit default swaps (CDS) are infamous for bringing down AIG and requiring a bailout of hundreds of billions of dollars. Because the market for these was so murky, the US government has insisted that Wall Street create a clearinghouse for these contracts. In a fresh twist, part of the deal is that the models used to price CDS have been standardized, and that the pricing code was made open source, under a somewhat BSD-like license. The source code (originally written by JPMorgan) provides the basic pricing routines, plus an Excel interface. To my knowledge this is the first significant migration of an investment bank product platform from its usual super-secret proprietary home to the rest of the world."

7 of 161 comments (clear)

  1. Grumble - "work" email address only by tqft · · Score: 3, Informative

    Tried to download the source from www.cdsmodel.com (where the TFA) points you.

    Wants an email address

    "I Accept

    Please keep me Informed about changes to the Standard Model:
    Email Address:

    "
    If you choose not to be informed it asks for an address anyway.

    If you add an email address - I used a gmail address - it asks for a work address. emailsucks@jpmorganblows.com now has a copy of the source.

    --
    The Singularity is closer than you think
    Quant
  2. Not a big deal by snax · · Score: 5, Informative

    I work in this area, and this isn't really that big of a deal, regardless of the spin they put in the announcement.

    This is about publishing a reference implementation of an already widely published model so that when party A does a particular calculation, related to a settlement amount for a particular trade, and party B does the same calculation, the values match.

    Qualitatively, and to a large extent quantitatively, everybody on the street has been using the same model all along. The idea of publishing a reference implementation is meant to minimize conflicts in settling trades.

    The accuracy of the valuation model here is not at the heart of any of the problems that AIG -- or any other firm, for that matter -- have experienced. That's more aligned with a simple lack of oversight on exposure.

  3. Re:Oh noes, not Excel! by ianare · · Score: 3, Informative

    Everyone, without exception, uses excel in the banking world. A lot of backend stuff runs on OSS though. And the source code to the calculator is in C, and includes a Linux makefile.

  4. Re:But... but... by maxume · · Score: 3, Informative

    You are mistaken. The government received senior bonds in exchange for the money. Today, Citigroup asked the government to convert those bonds to equity, and the government now owns 36% of Citigroup (under the bond structure, Citi had to pay the government interest; apparently, that was a problem, so they converted them to equity; hopefully they got a reasonable price).

    It may end up that the government investment disappears, or it may turn a profit (I would guess that the government will recoup a significant percentage of the money), but it didn't disappear down some rabbit hole, it was in exchange for financial instruments obligating the banks to pay the government back.

    Starting a new bank with a clean balance sheet probably would have been more effective, but they choose to bail out people who had deposited funds at existing banks (that's almost everybody...).

    --
    Nerd rage is the funniest rage.
  5. government bailout != communism by jpate · · Score: 4, Informative

    This is an important point that people don't seem to understand, probably because Marxist theory is not really taught except in specialist university level classes.

    Here's the basic idea. Under Capitalism, business owners make a profit by paying their workers less than their labor is worth (so all profit is exploitation), and the business owners are able to do this because racism &c. divides the workers. Eventually, the exploitation of workers gets so bad that they develop a class consciousness on the basis of their economic status that trumps racial &c. divides, and they (forcefully) take power from the business owners. The final stage of Marxist communism is really a form of anarchy, where the means of production are owned by workers in a distributed fashion.

    Agree with Communism or not, at least keep in mind that any top-down government aid paid for by workers to huge corporations is basically the opposite of Communism.

  6. What's the big deal? by richieb · · Score: 3, Informative
    Pricing a CDS is not that hard. See CDS. The papers that described the various methods have been widely publicized.

    ...richie

    --
    ...richie - It is a good day to code.