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Contract OI history

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Dec 18, 2026 EXPIRATION

PFE $27.00 Put

PFE261218P00027000

Latest saved OI40,691Oct 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. 40,76720,3830 2026-10-02: 12,102 OI2026-10-05: 12,294 OI2026-10-06: 12,474 OI2026-10-07: 13,475 OI2026-10-08: 13,475 OI2026-10-09: 13,553 OI2026-10-13: 13,576 OI2026-10-14: 13,576 OI2026-10-15: 40,115 OI2026-10-16: 40,197 OI2026-10-21: 40,767 OI2026-10-23: 40,691 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, 2026Viewing40,691-76
Oct 21, 202640,767+570
Oct 16, 202640,197+82
Oct 15, 202640,115+26,539
Oct 14, 202613,5760
Oct 13, 202613,576+23
Oct 09, 202613,553+78
Oct 08, 202613,4750
Oct 07, 202613,475+1,001
Oct 06, 202612,474+180
Oct 05, 202612,294+192
Oct 02, 202612,102No prior observation