Using over eight trillion observations of market data, we use a regression discontinuity design to analyze the effect of increasing the minimum price variation (MPV) for quoting equity securities in light of recent proposals to increase the MPV from $0.01 to $0.05. We show that a larger MPV...

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...

Prevailing research posits that liquidity providers bypass long queue lines on exchanges by offering liquidity in dark venues with de minimis sub-penny price improvement, thus exploiting an exception to the penny quote rule. We show that (a) the SEC enforces the quote rule to prevent sub-penny...