OITracker Cboe delayed data

Contract OI history

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Oct 23, 2026 EXPIRATION

NB $3.50 Put

NB261023P00003500

Latest saved OI111Oct 23, 2026
Last change-31vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
NB $3.50 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 142710 2026-10-09: 37 OI2026-10-13: 92 OI2026-10-14: 92 OI2026-10-16: 142 OI2026-10-21: 142 OI2026-10-23: 111 OI Oct 09, 2026Oct 23, 2026

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

NB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing111-31
Oct 21, 20261420
Oct 16, 2026142+50
Oct 14, 2026920
Oct 13, 202692+55
Oct 09, 202637No prior observation