OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

B $39.00 Put

B270319P00039000

Latest saved OI153Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $39.00 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. 153760 2026-10-02: 148 OI2026-10-05: 150 OI2026-10-06: 150 OI2026-10-07: 150 OI2026-10-08: 153 OI2026-10-09: 153 OI2026-10-13: 153 OI2026-10-14: 153 OI2026-10-15: 153 OI2026-10-16: 153 OI2026-10-21: 153 OI2026-10-23: 153 OI Oct 02, 2026Oct 23, 2026

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

B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1530
Oct 21, 20261530
Oct 16, 20261530
Oct 15, 20261530
Oct 14, 20261530
Oct 13, 20261530
Oct 09, 20261530
Oct 08, 2026153+3
Oct 07, 20261500
Oct 06, 20261500
Oct 05, 2026150+2
Oct 02, 2026148No prior observation