Learning to Learn Financial Networks for Optimising Momentum Strategies

• URL: http://arxiv.org/abs/2308.12212v1
• Date: Wed, 23 Aug 2023 15:51:29 GMT
• Title: Learning to Learn Financial Networks for Optimising Momentum Strategies
• Authors: Xingyue (Stacy) Pu, Stefan Zohren, Stephen Roberts, and Xiaowen Dong
• Abstract summary: Network momentum provides a novel type of risk premium, which exploits the interconnections among assets in a financial network to predict future returns. We propose L2GMOM, an end-to-end machine learning framework that simultaneously learns financial networks and optimises trading signals for network momentum strategies. Backtesting on 64 continuous future contracts demonstrates a significant improvement in portfolio profitability and risk control, with a Sharpe ratio of 1.74 across a 20-year period.
• Score: 14.049479722250835
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Network momentum provides a novel type of risk premium, which exploits the interconnections among assets in a financial network to predict future returns. However, the current process of constructing financial networks relies heavily on expensive databases and financial expertise, limiting accessibility for small-sized and academic institutions. Furthermore, the traditional approach treats network construction and portfolio optimisation as separate tasks, potentially hindering optimal portfolio performance. To address these challenges, we propose L2GMOM, an end-to-end machine learning framework that simultaneously learns financial networks and optimises trading signals for network momentum strategies. The model of L2GMOM is a neural network with a highly interpretable forward propagation architecture, which is derived from algorithm unrolling. The L2GMOM is flexible and can be trained with diverse loss functions for portfolio performance, e.g. the negative Sharpe ratio. Backtesting on 64 continuous future contracts demonstrates a significant improvement in portfolio profitability and risk control, with a Sharpe ratio of 1.74 across a 20-year period.

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