“…First, the paper relates to the literature on the information production of investors. Among other things, this literature classifies the type of information that investors use, e.g., by aggregation level (e.g., Kacperczyk, Nieuwerburgh, and Veldkamp (2014)), softness and complexity (e.g., Stein (2002), Gargano, Rossi, and Wermers (2016)), or source (e.g., Coval and Moskowitz (2001), Seru (2007), Fang, Peress, andZheng (2014)). I contribute to this literature by identifying product market linkages as hard-to-process information that offers valuable trading opportunities for investors.…”