We find that single-name options trading increases the absolute level of information content of prices (stock price informativeness). We confirm our results through instrumental variable approach to control for potential endogeneity. We further show causality by using a difference-in-difference...

Equity option markets can have a dual effect on firm's' cost of debt. On one hand, options attract more informed investors that increase price informativeness and reduce information asymmetries in the market, facilitating firm financing. On the other, by attracting more informed investors that...