Guanzheng Zhao, Kenny Zhang. From Earnings Calls to Earnings Events: An LLM-Guided Separation of Discretionary and Systematic Volatility Trading Signals. JACS [Internet]. 2024 Mar. 24 [cited 2026 Jun. 20];4(3):126-43. Available from: https://scipublication.com/index.php/JACS/article/view/401