There are no execution quality data records in 2015
Execution Quality Monthly Reports
The BATS Exchanges make the following market quality information publicly available to demonstrate the impact of BATS’ significant undisplayed liquidity, including true midpoint orders, on the economics of trading.
All calculated metrics are based on trades and quotes received from the Consolidated Tape during normal trading hours. Internal or external issues that result in dropped messages could affect the results of these reports. Please note that Excel Formatted files have multiple tabs.