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Re:The invisible hand that pushed Apple up and down for six ... by miralabs on Friday December 20, 2013 @08:28AM (#6941260)
some institutional trades aren't available for the public to see..

http://en.wikipedia.org/wiki/Dark_liquidity#Dark_pools

Re:The invisible hand that pushed Apple up and down for six ... by ahfttrader on Friday December 20, 2013 @08:44AM (#6941307)
False. Some institutional ORDERS aren't available to see. The trades must be reported.
Re:The invisible hand that pushed Apple up and down for six ... by miralabs on Friday December 20, 2013 @09:07AM (#6941416)
agreed they need to be reported but its only after, you won't be able to see them via the normal bid/ask volume from your broker for example.
Re:The invisible hand that pushed Apple up and down for six ... by ahfttrader on Friday December 20, 2013 @04:24PM (#6944138)
The normal bid/ask is not trades. It is orders.

This is the same as OTC, which is not a new technological development.