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枫下家园 / 理财投资税务 / 各位用AmeriTrade的，stream上怎么有时会出现bid高于ask的情况？奇怪。
-southnorth(2nd);
2003-10-10
(#1407569@0)
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This happens when market changes violatently: (1) bid/ask prices are reported asynchronously. (2) BIG MM intentionally raises bid higher than ask to wipe out ALL resistences quickly.
-accord86(accord);
2003-10-10
(#1407783@0)