Can a Machine Correct Option Pricing Models?
机器学习能否修正期权定价模型?AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要直接修正参数化期权定价模型,并预测隐含波动率曲面,因此归入资产定价和波动率。
机器学习能否修正期权定价模型?AI 解读 ↓
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We introduce a novel two-step approach to predict implied volatility surfaces. Given any fitted parametric option pricing model, we train a feedforward neural network on the model-implied pricing errors to correct for mispricing and boost performance. Using a large dataset of S&P 500 options, we test our nonparametric correction on several parametric models ranging from ad-hoc Black–Scholes to structural stochastic volatility models and demonstrate the boosted performance for each model. Out-of-sample prediction exercises in the cross-section and in the option panel show that machine-corrected models always outperform their respective original ones, often by a large extent. Our method is relatively indiscriminate, bringing pricing errors down to a similar magnitude regardless of the misspecification of the original parametric model. Even so, correcting models that are less misspecified usually leads to additional improvements in performance and also outperforms a neural network fitted directly to the implied volatility surface.