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Contract OI history

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Oct 23, 2026 EXPIRATION

PFE $28.00 Put

PFE261023P00028000

Latest saved OI2,862Oct 23, 2026
Last change+68vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $28.00 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. 2,8621,4310 2026-10-02: 362 OI2026-10-05: 376 OI2026-10-06: 473 OI2026-10-07: 399 OI2026-10-08: 399 OI2026-10-09: 792 OI2026-10-13: 973 OI2026-10-14: 973 OI2026-10-15: 928 OI2026-10-16: 1,459 OI2026-10-21: 2,794 OI2026-10-23: 2,862 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, 2026Viewing2,862+68
Oct 21, 20262,794+1,335
Oct 16, 20261,459+531
Oct 15, 2026928-45
Oct 14, 20269730
Oct 13, 2026973+181
Oct 09, 2026792+393
Oct 08, 20263990
Oct 07, 2026399-74
Oct 06, 2026473+97
Oct 05, 2026376+14
Oct 02, 2026362No prior observation