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Tag Archive | "efficient market"

Zombie Ideas

Thursday, February 5, 2009

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The casualties of the financial crisis aren’t just institutions, homeowners, and the newly unemployed: some ideas have taken a beating as well.  John Quiggin (Queensland) collects some of his work on refuted economic doctrines, and they’re really well executed (both the articles and the ideas, if you’ll pardon the pun): #1 The efficient markets hypothesis #2 The case for privatisation #3 The Great Moderation #4 Individual retirement accounts #5 Trickle down For those with ears to hear and eyes to see, some of those ideas have…

Market Neutral, Not Delta Neutral

Tuesday, August 12, 2008

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There are plenty of ways to put on option trades that have a neutral outlook: straddles, strangles, condors, etc.  Whereas stock and futures traders are limited to whatever price action the market gives you, options let you take a view on implied volatility (vega), the passage of time (theta), and the rate of change of the rate of change of the option per unit move in the underlying (gamma).  Okay, that last one isn’t so obvious, but the idea is…

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