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Leverage Causes Fat Tails and Clustered Volatility

Abstract:

We build a simple model of leveraged asset purchases with margin calls. Investment funds use what is perhaps the most basic financial strategy, called "value investing," i.e. systematically attempting to buy underpriced assets. When funds do not borrow, the price fluctuations of the asset are normally distributed and uncorrelated across time. All this changes when the funds are allowed to leverage, i.e. borrow from a bank, to purchase more assets than their wealth would otherwise permit...

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Institution:
University of Oxford
Division:
MPLS
Department:
Mathematical Institute
Role:
Author
Keywords:
Subtype:
Scholarly edition
Pubs id:
pubs:387707
UUID:
uuid:90f792ec-ab5a-4b13-849f-f382c0e6276a
Local pid:
pubs:387707
Source identifiers:
387707
Deposit date:
2013-11-16

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