Nanex Research

Nanex ~ 19-Dec-2012 ~ Systemic Dark Pool Tardiness

During market wide momentum ignition events: where trades execute in hundreds of symbols at the same millisecond, we've noticed the dark pool trades always, always, always come quite a bit after lit market trades. The 3 charts plot trade execution prices (y-axis) between 0 and $145 during a 6 second period of time starting at 11:21:11 on December 19, 2012. Each pixel width corresponds to 5 milliseconds of time. SPY trades show up near the top at $145. What these charts show, is that dark pool trade execution are consistently reported late for all symbols. We think traders and investors that use consolidated market data deserve better.

See also Tardy Trade Reports in Apple, and Light before Dark.

Click Start/Stop to run a slide show of all 3 images, or Prev/Next to step through them one at a time.


Nanex Research