Hedging with memory: shallow and deep learning with signatures
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909730406924288 |
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| author | Jaber, Eduardo Abi Gérard, Louis-Amand |
| author_facet | Jaber, Eduardo Abi Gérard, Louis-Amand |
| contents | We investigate the use of path signatures in a machine learning context for hedging exotic derivatives under non-Markovian stochastic volatility models. In a deep learning setting, we use signatures as features in feedforward neural networks and show that they outperform LSTMs in most cases, with orders of magnitude less training compute. In a shallow learning setting, we compare two regression approaches: the first directly learns the hedging strategy from the expected signature of the price process; the second models the dynamics of volatility using a signature volatility model, calibrated on the expected signature of the volatility. Solving the hedging problem in the calibrated signature volatility model yields more accurate and stable results across different payoffs and volatility dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_02759 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Hedging with memory: shallow and deep learning with signatures Jaber, Eduardo Abi Gérard, Louis-Amand Machine Learning Computational Finance Mathematical Finance 60L10, 91G20, 91G60 We investigate the use of path signatures in a machine learning context for hedging exotic derivatives under non-Markovian stochastic volatility models. In a deep learning setting, we use signatures as features in feedforward neural networks and show that they outperform LSTMs in most cases, with orders of magnitude less training compute. In a shallow learning setting, we compare two regression approaches: the first directly learns the hedging strategy from the expected signature of the price process; the second models the dynamics of volatility using a signature volatility model, calibrated on the expected signature of the volatility. Solving the hedging problem in the calibrated signature volatility model yields more accurate and stable results across different payoffs and volatility dynamics. |
| title | Hedging with memory: shallow and deep learning with signatures |
| topic | Machine Learning Computational Finance Mathematical Finance 60L10, 91G20, 91G60 |
| url | https://arxiv.org/abs/2508.02759 |