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Technology Stocks : USRX
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To: David Rosenberg who wrote (16890)3/27/1997 9:23:00 AM
From: Janice Shell   of 18024
 
David--

Rules of thumb (if this is of any use):

1. Open interest increases when a new long buys from a new short.

2. OI decreases when an old long sells to an old short.

3. OI does not change when a new long buys from an old long or a new short sells to an old short, as the new player simply replaces the old player.

Janice
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