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Risk management

Quant ideas: Do we need realistic models?

It is often assumed that realistic models are a prerequisite for successful risk management, but this is not necessarily true. While using any model blindly can be extremely dangerous, simple Black-Scholes or Ornstein-Uhlenbeck models are more than…

Anatomy of a model: Valuation of physical assets

This paper dissects the layers of valuation models for physical assets. While their joint functioning is crucial, the integrity of the layers is not always well understood. Rossen Roussev warns of the trend to over-engineer the parts and mis-model the…

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