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Contract OI history

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Sep 17, 2027 EXPIRATION

PFE $40.00 Call

PFE270917C00040000

Latest saved OI257Oct 23, 2026
Last change-4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $40.00 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. 2611300 2026-10-02: 235 OI2026-10-05: 235 OI2026-10-06: 236 OI2026-10-07: 241 OI2026-10-08: 241 OI2026-10-09: 241 OI2026-10-13: 247 OI2026-10-14: 247 OI2026-10-15: 250 OI2026-10-16: 252 OI2026-10-21: 261 OI2026-10-23: 257 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, 2026Viewing257-4
Oct 21, 2026261+9
Oct 16, 2026252+2
Oct 15, 2026250+3
Oct 14, 20262470
Oct 13, 2026247+6
Oct 09, 20262410
Oct 08, 20262410
Oct 07, 2026241+5
Oct 06, 2026236+1
Oct 05, 20262350
Oct 02, 2026235No prior observation