OITracker Cboe delayed data

Contract OI history

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Nov 06, 2026 EXPIRATION

PFE $27.00 Put

PFE261106P00027000

Latest saved OI326Oct 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
PFE $27.00 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. 4022010 2026-10-02: 91 OI2026-10-05: 115 OI2026-10-06: 251 OI2026-10-07: 254 OI2026-10-08: 254 OI2026-10-09: 309 OI2026-10-13: 349 OI2026-10-14: 349 OI2026-10-15: 385 OI2026-10-16: 383 OI2026-10-21: 402 OI2026-10-23: 326 OI Oct 02, 2026Oct 23, 2026

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

PFE contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing326-76
Oct 21, 2026402+19
Oct 16, 2026383-2
Oct 15, 2026385+36
Oct 14, 20263490
Oct 13, 2026349+40
Oct 09, 2026309+55
Oct 08, 20262540
Oct 07, 2026254+3
Oct 06, 2026251+136
Oct 05, 2026115+24
Oct 02, 202691No prior observation