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http://ssrn.com/abstract=1717163
 
 

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'P' Versus 'Q': Differences and Commonalities between the Two Areas of Quantitative Finance


Attilio Meucci


SYMMYS

January 22, 2011

GARP Risk Professional, pp. 47-50, February 2011

Abstract:     
There exist two separate branches of finance that require advanced quantitative techniques: the "Q" area of derivatives pricing, whose task is to "extrapolate the present"; and the "P" area of quantitative risk and portfolio management, whose task is to "model the future."

We briefly trace the history of these two branches of quantitative finance, highlighting their different goals and challenges. Then we provide an overview of their areas of intersection: the notion of risk premium; the stochastic processes used, often under different names and assumptions in the Q and in the P world; the numerical methods utilized to simulate those processes; hedging; and statistical arbitrage.

Number of Pages in PDF File: 8

Keywords: Risk Neutral, Real Measure, Sell-Side, Buy-Side, Asset Pricing, No-Arbitrage, Martingale, Calibration, Estimation, Ito Calculus, PDE, Time-Series, Econometric, Portfolio Theory, Delta-Hedging, Alpha, Statistical Arbitrage, Levy Processes, ARMA, Ornstein-Uhlenbeck, GARCH, Stochastic, Heston

JEL Classification: C1, G11

Accepted Paper Series


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Date posted: January 23, 2011  

Suggested Citation

Meucci, Attilio, 'P' Versus 'Q': Differences and Commonalities between the Two Areas of Quantitative Finance (January 22, 2011). GARP Risk Professional, pp. 47-50, February 2011. Available at SSRN: http://ssrn.com/abstract=1717163

Contact Information

Attilio Meucci (Contact Author)
SYMMYS ( email )
HOME PAGE: http://www.symmys.com
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