Language Model Guided Reinforcement Learning in Quantitative Trading

• URL: http://arxiv.org/abs/2508.02366v1
• Date: Mon, 04 Aug 2025 12:52:11 GMT
• Title: Language Model Guided Reinforcement Learning in Quantitative Trading
• Authors: Adam Darmanin, Vince Vella,
• Abstract summary: Large language models (LLMs) have recently demonstrated strategic reasoning and multi-modal financial signal interpretation.<n>We propose a hybrid system where LLMs generate high-level trading strategies to guide RL agents in their actions.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Algorithmic trading requires short-term decisions aligned with long-term financial goals. While reinforcement learning (RL) has been explored for such tactical decisions, its adoption remains limited by myopic behavior and opaque policy rationale. In contrast, large language models (LLMs) have recently demonstrated strategic reasoning and multi-modal financial signal interpretation when guided by well-designed prompts. We propose a hybrid system where LLMs generate high-level trading strategies to guide RL agents in their actions. We evaluate (i) the rationale of LLM-generated strategies via expert review, and (ii) the Sharpe Ratio (SR) and Maximum Drawdown (MDD) of LLM-guided agents versus unguided baselines. Results show improved return and risk metrics over standard RL.

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