The fact that one lovable rogue in London misplaced UBS’s bonus pool for the year has people talking again about the Volcker rule, which would ban proprietary trading at banks. I still don’t really understand that, and I’m not alone. Here is a thing about the Volcker rule and “Delta desks” (what?):
Yet the definition of what constitutes proprietary trading can be fuzzy. Many on Wall Street consider proprietary trading, or prop trading, to involve only trades made by dedicated traders who are using the bank’s capital and do not have access to client information. The trading done on Delta desks, they contend, is done on behalf of clients.
Those boundaries, however, can blur. A bank may buy a derivative or security from a client in order to make a market, then decide it is worth hanging onto, turning it into a proprietary bet.
The Volcker rule of the Dodd-Frank act is named after Paul A. Volcker, the former Federal Reserve chairman who proposed it. It is intended to prevent American banks from taking on too much risk. The fine print, however, has yet to be worked out, and regulators are debating just how comprehensive to make the definition of proprietary.
This is sort of correct but nicely embodies the conceptual confusion that I suspect lies behind the Volcker rule. Let’s spend four hours talking about it, shall we?
Continue reading »




