Nanex ~ 19-Dec-2012 ~ How Algos Say Goodbye
Every day, right after market close, many trading algorithms begin fading their bid and
offer prices (lower bid price and raise ask prices): sometime to extreme prices.
For example, the ask price for a stock might be raised from $50 to $5000 a few cents
at a time, and maybe 100 times each second.
The charts below show ask prices for all
8000 NMS Stocks for a 27 second period starting right before market close. Each chart
zooms out in price from the previous one.
Click Start/Stop to run a slide show of all 5 images, or Prev/Next to step through them one
at a time.