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Date/Time: Fri, 12 Sep 2025 07:40:49 +0000



Post From: SPX/Index Volumes

[2024-08-14 13:56:20]
PolandSpringer - Posts: 33
For the SPX_CGI symbol on the new CBOE feed I am able to see volume studies & time/sales. What is this data based off since there is no trading on the underlying itself?