Batch auctions don&#x27;t deal with the main area of &quot;high frequency shenanigans&quot; which is cross exchange arbitrage.  There isn&#x27;t &quot;a market&quot; there are lots of little ones, geographically dispersed and across jurisdictions.<p>Further, there are already pro-rata matching engines, and they also have &quot;high frequency shenanigans&quot;.  In fact, they actually can encourage more gaming as you <i>have</i> to put in more quantity than you want, so you have to do something else to manage your risk.