The effective transaction cost rates (TCRs) facing large institutional investors often depend on their trading speeds. We propose a continuous time work-horse model to study optimal trading strategies with speed-dependent TCRs. Unlike the existing literature, our model allows the TCRs to be a...

We show that option prices predict future stock returns only when stock returns are ex-ante predictable using public signals from the stock market itself. Directional option trading cannot explain these results, suggesting that they are not driven by informed trading or superior ability of...