Wang, Jiarui; Yang, Haijun; Liu, Shancun - In: Financial innovation : FIN 11 (2025), pp. 1-25
We construct a model to examine the time-varying ambiguity of investors. When ambiguity occurs concerning recent news, long (short) position investors who are averse to ambiguity reduce (increase) their holdings, resulting in price drops (rises). We empirically analyze how the "two sessions," a...