OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

IBKR $100.00 Put

IBKR280121P00100000

Latest saved OI142Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
IBKR $100.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 143710 2026-10-09: 143 OI2026-10-13: 143 OI2026-10-14: 143 OI2026-10-15: 143 OI2026-10-16: 142 OI2026-10-21: 142 OI2026-10-23: 142 OI Oct 09, 2026Oct 23, 2026

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

IBKR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1420
Oct 21, 20261420
Oct 16, 2026142-1
Oct 15, 20261430
Oct 14, 20261430
Oct 13, 20261430
Oct 09, 2026143No prior observation