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Contract OI history

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Dec 18, 2026 EXPIRATION

PFSI $85.00 Put

PFSI261218P00085000

Latest saved OI42Oct 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 $85.00 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. 189940 2026-10-02: 189 OI2026-10-05: 189 OI2026-10-06: 189 OI2026-10-07: 189 OI2026-10-08: 42 OI2026-10-09: 42 OI2026-10-13: 42 OI2026-10-14: 42 OI2026-10-16: 42 OI2026-10-20: 42 OI2026-10-23: 42 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, 2026420
Oct 20, 2026Viewing420
Oct 16, 2026420
Oct 14, 2026420
Oct 13, 2026420
Oct 09, 2026420
Oct 08, 202642-147
Oct 07, 20261890
Oct 06, 20261890
Oct 05, 20261890
Oct 02, 2026189No prior observation