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Contract OI history

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Jan 19, 2029 EXPIRATION

PFE $20.00 Put

PFE290119P00020000

Latest saved OI53Oct 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. 65320 2026-10-02: 50 OI2026-10-05: 52 OI2026-10-06: 59 OI2026-10-07: 65 OI2026-10-08: 65 OI2026-10-09: 65 OI2026-10-13: 54 OI2026-10-14: 54 OI2026-10-15: 53 OI2026-10-16: 53 OI2026-10-21: 53 OI2026-10-23: 53 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, 2026Viewing530
Oct 21, 2026530
Oct 16, 2026530
Oct 15, 202653-1
Oct 14, 2026540
Oct 13, 202654-11
Oct 09, 2026650
Oct 08, 2026650
Oct 07, 202665+6
Oct 06, 202659+7
Oct 05, 202652+2
Oct 02, 202650No prior observation