Some 33% of US stock trading activity takes place outside of exchanges. Four years ago, only 20% of trading did. What does that mean? Now, only two-thirds of trading actually sets the price of a stock that zips along the ticker, down from 80% in 2007. Where has all the trading gone?
Call it high frequency trading or automated market making or any number of other monikers, but trading isn’t happening on the exchanges. Instead, they might be traded within a dark pool, through a crossing network, or absorbed within the platform of a broker-dealer. The prices in these venues, however, don’t make it to the tape, and we are left with a question: is that a good thing? Read the rest of this entry »


