OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

B $35.00 Put

B261120P00035000

Latest saved OI1,744Oct 23, 2026
Last change+76vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $35.00 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. 1,7448720 2026-10-02: 1,113 OI2026-10-05: 1,143 OI2026-10-06: 1,143 OI2026-10-07: 1,166 OI2026-10-08: 1,618 OI2026-10-09: 1,618 OI2026-10-13: 1,642 OI2026-10-14: 1,647 OI2026-10-15: 1,639 OI2026-10-16: 1,640 OI2026-10-21: 1,668 OI2026-10-23: 1,744 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, 2026Viewing1,744+76
Oct 21, 20261,668+28
Oct 16, 20261,640+1
Oct 15, 20261,639-8
Oct 14, 20261,647+5
Oct 13, 20261,642+24
Oct 09, 20261,6180
Oct 08, 20261,618+452
Oct 07, 20261,166+23
Oct 06, 20261,1430
Oct 05, 20261,143+30
Oct 02, 20261,113No prior observation