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Contract OI history

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Nov 06, 2026 EXPIRATION

PFE $28.00 Put

PFE261106P00028000

Latest saved OI628Oct 23, 2026
Last change-10vs 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. 6383190 2026-10-02: 72 OI2026-10-05: 131 OI2026-10-06: 199 OI2026-10-07: 244 OI2026-10-08: 244 OI2026-10-09: 252 OI2026-10-13: 290 OI2026-10-14: 290 OI2026-10-15: 618 OI2026-10-16: 622 OI2026-10-21: 638 OI2026-10-23: 628 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, 2026Viewing628-10
Oct 21, 2026638+16
Oct 16, 2026622+4
Oct 15, 2026618+328
Oct 14, 20262900
Oct 13, 2026290+38
Oct 09, 2026252+8
Oct 08, 20262440
Oct 07, 2026244+45
Oct 06, 2026199+68
Oct 05, 2026131+59
Oct 02, 202672No prior observation