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Technology Stocks : Qwest Communications (Q) (formerly QWST)
Q 75.80+1.2%Nov 21 9:30 AM EST

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To: Howard Hoffman who wrote (1054)4/1/1998 9:11:00 AM
From: SJS  Read Replies (3) of 6846
 
Yes, I've seen it before with other stocks. I wonder what model you use? Are these the closing prices, or are you doing your computations with the bid/ask (you should use the bid prices...) during market hours?

You may be seeing stale quotes as the problem sometimes occurs with non heavily traded options that the closing prices are older that current bid/ask if they don't get traded for a few days.
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