We investigate how and why relative tick sizes influence traders' order strategies, and how this affects liquidity provision in the market. Using unique NYSE data, we find that a larger relative tick size benefits HFT market makers: they leave orders in the book longer, trade more aggressively,...

A goal for stock exchanges is to increase participation by firms and investors. We show how specific features of the microstructure can reduce perceived ambiguity, and induce participation by both investors and issuers. We develop a model with sophisticated traders, who we view as expected...

Beginning in early 2021, surging volume in Berkshire Hathaway A (BRK.A) has captured the attention of market watchers. Averaging volume of just 375 shares a day over the previous decade, the market’s most expensive stock routinely traded additional volume equivalent to more than a billion...