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Contract OI history

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Dec 18, 2026 EXPIRATION

PFSI $80.00 Put

PFSI261218P00080000

Latest saved OI994Oct 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 $80.00 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. 1,3086540 2026-10-02: 1,308 OI2026-10-05: 1,308 OI2026-10-06: 1,308 OI2026-10-07: 1,308 OI2026-10-08: 1,308 OI2026-10-09: 1,308 OI2026-10-13: 1,216 OI2026-10-14: 994 OI2026-10-16: 994 OI2026-10-20: 994 OI2026-10-23: 994 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, 20269940
Oct 20, 2026Viewing9940
Oct 16, 20269940
Oct 14, 2026994-222
Oct 13, 20261,216-92
Oct 09, 20261,3080
Oct 08, 20261,3080
Oct 07, 20261,3080
Oct 06, 20261,3080
Oct 05, 20261,3080
Oct 02, 20261,308No prior observation