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Contract OI history

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Dec 17, 2027 EXPIRATION

PFE $20.00 Put

PFE271217P00020000

Latest saved OI11,941Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $20.00 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. 12,0036,0010 2026-10-02: 12,003 OI2026-10-05: 11,981 OI2026-10-06: 11,981 OI2026-10-07: 11,981 OI2026-10-08: 11,981 OI2026-10-09: 11,971 OI2026-10-13: 11,971 OI2026-10-14: 11,971 OI2026-10-15: 11,971 OI2026-10-16: 11,942 OI2026-10-21: 11,941 OI2026-10-23: 11,941 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, 2026Viewing11,9410
Oct 21, 202611,941-1
Oct 16, 202611,942-29
Oct 15, 202611,9710
Oct 14, 202611,9710
Oct 13, 202611,9710
Oct 09, 202611,971-10
Oct 08, 202611,9810
Oct 07, 202611,9810
Oct 06, 202611,9810
Oct 05, 202611,981-22
Oct 02, 202612,003No prior observation