To: Frank A. Coluccio who wrote (31582 ) 10/5/2009 1:19:10 PM From: axial Read Replies (1) | Respond to of 46821 Actually, I think that's very reasonable. '“Now it’s an arms race,” said Andrew Lo, director of the Massachusetts Institute of Technology’s Laboratory for Financial Engineering. “Everyone is building more sophisticated algorithms, and the more competition exists, the smaller the profits.”' en.wikipedia.org However, there are other questions about the practice to which we don't have answers. Again, what are the macro effects? What about systemic risk? In the aggregate, do such trades accentuate or distort trends?"Dispersion desks can handle significant volatility risks in the same way that a basket desk can handle extremely large deltas per instrument or a cap/floor vs. swaption trader can handle extremely large volatility risks per underlying. As a matter of fact, a dispersion trader is essentially a cap/floor vs. swaptions trader, albeit somewhat less structured. Dispersion traders can come into a single stock and sometimes sell signifcant vegas (read: millions) before anyone knows what is happening ." And later... 'Dispersion allows for the mixing of index (basket) volatility and constituent member volatility. It’s a fairly complex trade where a single book can consist of hundreds (thousands) of positions. For this reason, one needs to have a certain amount of back-office and risk management capability to make it worth one’s while. Also it helps to have decent access to (internal) market makers, as trying to profit from dispersion as a market taker where you are giving up one or two percent in annualized dispersion terms is hard.' nuclearphynance.com What happens when these trades are leveraged 20 or 30 times? --- We've seen claims that such trading (which represents significant capital diverted to non-productive trading, as opposed to investing, and the virtuous circle of economic recirculation) is perpetuated only for the profit of houses involved, including banks. That derivatives (for example) do not effectively mitigate risk like insurance, but rather, generate profits while increasing systemic risk. Again in a macro sense, is this the way we want to use capital in our economy? Especially these days, when companies are starving for credit? Your response is quite logical. However in a larger sense, there are questions about other financial and trading practices that should be answered. JMO, Jim