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Contract OI history

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Dec 17, 2027 EXPIRATION

PFSI $55.00 Put

PFSI271217P00055000

Latest saved OI796Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFSI $55.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 7963980 2026-10-02: 791 OI2026-10-05: 791 OI2026-10-06: 791 OI2026-10-07: 792 OI2026-10-08: 792 OI2026-10-09: 792 OI2026-10-13: 792 OI2026-10-14: 796 OI2026-10-16: 796 OI2026-10-20: 796 OI2026-10-23: 796 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

PFSI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20267960
Oct 20, 2026Viewing7960
Oct 16, 20267960
Oct 14, 2026796+4
Oct 13, 20267920
Oct 09, 20267920
Oct 08, 20267920
Oct 07, 2026792+1
Oct 06, 20267910
Oct 05, 20267910
Oct 02, 2026791No prior observation