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Contract OI history

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Nov 20, 2026 EXPIRATION

PSA $280.00 Put

PSA261120P00280000

Latest saved OI37Oct 23, 2026
Last change+3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PSA $280.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 37180 2026-10-02: 7 OI2026-10-05: 9 OI2026-10-06: 9 OI2026-10-07: 25 OI2026-10-08: 25 OI2026-10-09: 25 OI2026-10-13: 33 OI2026-10-14: 33 OI2026-10-15: 33 OI2026-10-16: 33 OI2026-10-21: 34 OI2026-10-23: 37 OI Oct 02, 2026Oct 23, 2026

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

PSA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 202637+3
Oct 21, 2026Viewing34+1
Oct 16, 2026330
Oct 15, 2026330
Oct 14, 2026330
Oct 13, 202633+8
Oct 09, 2026250
Oct 08, 2026250
Oct 07, 202625+16
Oct 06, 202690
Oct 05, 20269+2
Oct 02, 20267No prior observation