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To: Henry J Costanzo who wrote (128600)1/29/2006 11:52:08 AM
From: Shack  Read Replies (1) | Respond to of 209892
 
The ISE is the largest options exchange by dollar volume amongst the 6 exchanges. They do about 35% of all dollar volume.

Weird, both of our first posts today were within one second of each other.



To: Henry J Costanzo who wrote (128600)1/29/2006 12:18:42 PM
From: Win-Lose-Draw  Respond to of 209892
 
About 30% of the volume through ISE is taggeed as "individual" related. ISE's share of the index option trading pie is ~5% (ignoring options on futures), their share of equity options is ~25-30%. They are the volume (but not dollar) leader in US issues.

Combining all that, their sentiment reading is based on roughly 5% of all vanilla options trading.


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