KAI ZHANG; GUANZHENG ZHAO; ERIC ZHOU . Volatility Regime-Adaptive Spread Widening for ETF Option Market Making: Evidence from a 2024 SPY, QQQ, and IWM Panel. Journal of Advanced Computing Systems , [S. l.], v. 4, n. 6, p. 86–103, 2024. DOI: 10.69987/JACS.2024.40607. Disponível em: https://scipublication.com/index.php/JACS/article/view/391.. Acesso em: 15 jun. 2026.