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Strategies & Market Trends : From the Trading Desk

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To: g_m10 who wrote (2721)	3/19/1998 5:38:00 AM
From: steve goldman	Read Replies (1) of 4969

Hi GM! Options often trade on several exchanges, ie. Amex, Chicago, Pcoast, est. I believe that each exchange tracks it own open interest in the securities taht trade on its exchange. SO it could be that the piece of 250 was done a different exchange. You can check different prices on various exchanges by entering the quote as SEGAB.O (consoldiated) SEGFR.PO (pcoae) SEGFR.AO (amex options) etc. Put a .*O at the end. The other reason you might not have seen it was that someone closed a position. Ie....right after he that person bot 250, someone sold 110...to close....etc. Regards, Steve@yamner.com

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