http://www.bloomberg.com/apps/news?pid=20601087&sid=ahZh1lKYXD8w&refer=home
Is GS preparing for something?
Is GS preparing for something?

Quote from Spectre2007:
Some of the most destructive patterns are mindloops in trading, price cascades, when recursive/positive feedback loops get set off.
These are set off on purpose to trigger wide range ATR stops. They are mostly computer driven, the trading curbs mitigate this to some effect.
The last pattern was the preceding Friday. It will be advantageous for the big houses to start them earlier in the day, since the amount of time left that the exchange is open is what determines their finality.
'87 was a similar mindloop, and it started on the open. These things primarily destroy small fry traders. And some retail investors who use stoplosses on investment portfolios instead of maintaining buy n hold multiyear strategy.
It can set off a multisession destructive pattern.