TY - JOUR AU - fadaei, Ebrahim AU - dadashi, iman AU - zare bahnamiri, Mohammad javad AU - azinfar, kaveh TI - Predicting negative stock price shocks based on the Meta heuristic approach JO - Financial Knowledge of Securities Analysis VL - 14 IS - 50 SP - 99 EP - 108 PY - 2021 DO - ER -