as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
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investments - huge drop in bid price versus last close
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depends on when you are seeing these bids & asks-- off hours, many market makers pull their bid & ask prices entirely.  in a lightly traded stock there may just be no market except during the regular trading day.
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