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Contract OI history

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Nov 13, 2026 EXPIRATION

PFE $27.50 Call

PFE261113C00027500

Latest saved OI354Oct 23, 2026
Last change-21vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $27.50 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3751870 2026-10-02: 0 OI2026-10-05: 72 OI2026-10-06: 297 OI2026-10-07: 306 OI2026-10-08: 306 OI2026-10-09: 344 OI2026-10-13: 370 OI2026-10-14: 370 OI2026-10-15: 370 OI2026-10-16: 371 OI2026-10-21: 375 OI2026-10-23: 354 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, 2026Viewing354-21
Oct 21, 2026375+4
Oct 16, 2026371+1
Oct 15, 20263700
Oct 14, 20263700
Oct 13, 2026370+26
Oct 09, 2026344+38
Oct 08, 20263060
Oct 07, 2026306+9
Oct 06, 2026297+225
Oct 05, 202672+72
Oct 02, 20260No prior observation