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Thomas Roos, a London-based consultant specialising in derivatives, talks about models that produce arbitrageable swaptions prices and the crude methods firms currently use to fix them.
Giorgia Callegaro, Lucio Fiorin and Martino Grasselli, authors of 'American quantized calibration in stochastic volatility', introduce a pricing model for European and American-style options with stochastic volatility.
Damiano Brigo, chair of mathematical finance at Imperial College London, shares his thoughts on the lost causes, the present role and the future prospects of quantitative finance.