OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

BG $40.00 Put

BG280121P00040000

Latest saved OI351Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BG $40.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3511750 2026-10-02: 156 OI2026-10-05: 156 OI2026-10-06: 156 OI2026-10-07: 156 OI2026-10-08: 156 OI2026-10-09: 156 OI2026-10-13: 156 OI2026-10-14: 156 OI2026-10-15: 254 OI2026-10-16: 254 OI2026-10-21: 351 OI2026-10-23: 351 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

BG contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3510
Oct 21, 2026351+97
Oct 16, 20262540
Oct 15, 2026254+98
Oct 14, 20261560
Oct 13, 20261560
Oct 09, 20261560
Oct 08, 20261560
Oct 07, 20261560
Oct 06, 20261560
Oct 05, 20261560
Oct 02, 2026156No prior observation