January 29, 2013
[Copyrighted material redacted. Author cites:
http://tech.fortune.cnn.com/2013/01/27/apple-high-frequency-trading-algorithms/]
what do you think? price manipulation in the last few seconds of a trading day?
http://www.nanex.net/FlashCrash/OngoingResearch.html
and many more instances here. every day. all the time.