日期:2014/01/20
Any time the other side knows your positions, you're in grave danger. That happens for most people in currencies and options and other markets run by people named doc. They know what your limits are, what your margins are, whether you've been good or bad, what your proclivities to go with or go against are.
The drastic moves to 530 EST to the gold and currency fixings without any volume in between show how a vacuum to do one in can develop. The situation in options is often worse as in addition to all the other problems, the people on the other side make the margins and have specials dispensations for themselves.
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