OITracker Cboe delayed data

Contract OI history

Back to PFE

Mar 19, 2027 EXPIRATION

PFE $19.00 Put

PFE270319P00019000

Latest saved OI576Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $19.00 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. 5772880 2026-10-02: 538 OI2026-10-05: 538 OI2026-10-06: 537 OI2026-10-07: 537 OI2026-10-08: 537 OI2026-10-09: 577 OI2026-10-13: 577 OI2026-10-14: 577 OI2026-10-15: 577 OI2026-10-16: 577 OI2026-10-21: 577 OI2026-10-23: 576 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, 2026Viewing576-1
Oct 21, 20265770
Oct 16, 20265770
Oct 15, 20265770
Oct 14, 20265770
Oct 13, 20265770
Oct 09, 2026577+40
Oct 08, 20265370
Oct 07, 20265370
Oct 06, 2026537-1
Oct 05, 20265380
Oct 02, 2026538No prior observation