I show that frequent batch auctions for stocks have the potential to reduce the severity
of stock price crashes when they occur. For a given sequence of orders from a
continuous electronic limit order book market, matching orders using one-second
apart batch auctions results in nearly the same trades and prices. Increasing the
time interval between auctions to one minute significantly reduces the severity of stock
price crashes. In spite of this and other advantages pointed out in the literature, frequent batch auctions have not caught on. There is a need for carefully designed
market experiments to understand why and what aspect of reality academic research
may be missing.