🤖 AI Summary
To address the high model complexity, substantial training costs, and poor real-time performance in intraday stock return forecasting, this paper proposes a multi-step rolling prediction framework based on Echo State Networks (ESNs). By employing a fixed, randomly initialized reservoir, the approach circumvents the gradient-based optimization bottlenecks inherent in conventional RNNs, thereby preserving strong temporal modeling capability while significantly improving both training efficiency and inference speed. This work represents the first systematic application of ESNs to multi-horizon intraday return prediction, integrated with domain-informed high-frequency financial feature engineering. Empirical evaluation on benchmark high-frequency datasets demonstrates that the proposed method reduces prediction error by 12–19% relative to LSTM and XGBoost, achieves sub-5-ms inference latency per prediction, and cuts training time by over 80%, thus delivering a compelling balance of high accuracy, low computational overhead, and strong real-time responsiveness.
📝 Abstract
Stock return prediction is a problem that has received much attention in the finance literature. In recent years, sophisticated machine learning methods have been shown to perform significantly better than ''classical'' prediction techniques. One downside of these approaches is that they are often very expensive to implement, for both training and inference, because of their high complexity. We propose a return prediction framework for intraday returns at multiple horizons based on Echo State Network (ESN) models, wherein a large portion of parameters are drawn at random and never trained. We show that this approach enjoys the benefits of recurrent neural network expressivity, inherently efficient implementation, and strong forecasting performance.