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Cboe Open-Close Volume Summary - Subscription
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Open-Close data is a volume summary file for option trading activity on Cboe exchanges (BZX, C1, C2, EDGX). Available in 10-minute intervals or as an end-of-day summary, it aggregates and buckets the volume by origin (customer, professional customer, broker-dealer, and market maker), buying/selling, and opening/closing position. The customer and professional customer volumes are further broken down into trade size buckets (fewer than 100 contracts, 100-199 contracts, greater than 199 contracts). Fields 10-17 (OHLC prices, total volume, open interest) will only be available in the end-of-day files and will not be populated in the 10-minute intervals. It contains all series in an underlying security's chain if it has volume on the exchange.

Select one or more exchanges when purchasing. Data files are delivered per exchange.

Reference:

Detailed end-of-day file information:
EOD file specification
Legacy EOD file specification (C1)

Detailed 10-minute interval file information:
Interval file specification

This data set is exclusive to Cboe and Fee Schedules have been filed with the SEC (see “LiveVol Fees”)

Subscription:

End-of-day data is delivered overnight after midnight U.S. Eastern. 10-minute files are delivered intraday a few minutes after each interval closes.

For EOD data, there will be one file per exchange.

For interval data, there will be one file per exchange, per 10-minute interval time stamp

Historical Data:

Historical data can be found here

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Warning: Data is unavailable for either specific dates or symbols from your selection. Show excluded symbols and dates here.
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