OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

B $36.00 Put

B270319P00036000

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 $36.00 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: 109 OI2026-10-05: 128 OI2026-10-06: 128 OI2026-10-07: 128 OI2026-10-08: 151 OI2026-10-09: 151 OI2026-10-13: 151 OI2026-10-14: 151 OI2026-10-15: 152 OI2026-10-16: 152 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, 2026153+1
Oct 16, 20261520
Oct 15, 2026152+1
Oct 14, 20261510
Oct 13, 20261510
Oct 09, 20261510
Oct 08, 2026151+23
Oct 07, 20261280
Oct 06, 20261280
Oct 05, 2026128+19
Oct 02, 2026109No prior observation