offical explanation or rumor?

來源: vikings 於 2010-05-06 21:24:28 [] [舊帖] [給我悄悄話] 本文已被閱讀： 次 (215 bytes)
回答: today's news--Nasdaq to cancel trades 由 戲雨飛鷹 於 2010-05-06 16:22:06
the official news is program trading error caused market sudden drop and protection mechanism exist in many High-frequency trading firms shut down trading machines exaggerated the situation.

The rumor is ..
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