This paper investigates the effects of an increase in tick size on order and trading flow across market fee venues. Using the pilot firms in the SEC's Tick Size Pilot Program, we document trade and order volume declines significantly on maker-taker fee venues after the tick size implementation....

We study the levels of lit and dark fragmentation in IPOs. Using a sample of 451 IPOs, we find that measures of dark and lit fragmentation are higher in underpriced issues. We further test the claim that IPO price uncertainty is not fully resolved at the offering and that this ex-post...

We examine the effects of an order cancellation fee on limit order flow and execution quality in the PHLX options market. The cancellation fee on professional order flow is effective in reducing the rate at which limit orders are canceled. While the cancellation fee discourages the submission of...