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Contract OI history

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May 21, 2027 EXPIRATION

PFSI $65.00 Put

PFSI270521P00065000

Latest saved OI18Oct 23, 2026
Last change+2vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFSI $65.00 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. 1890 2026-10-02: 0 OI2026-10-05: 0 OI2026-10-06: 3 OI2026-10-07: 3 OI2026-10-08: 9 OI2026-10-09: 9 OI2026-10-13: 9 OI2026-10-14: 9 OI2026-10-16: 12 OI2026-10-20: 16 OI2026-10-23: 18 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, 202618+2
Oct 20, 2026Viewing16+4
Oct 16, 202612+3
Oct 14, 202690
Oct 13, 202690
Oct 09, 202690
Oct 08, 20269+6
Oct 07, 202630
Oct 06, 20263+3
Oct 05, 202600
Oct 02, 20260No prior observation