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Contract OI history

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Nov 20, 2026 EXPIRATION

PS $40.00 Put

PS261120P00040000

Latest saved OI1,572Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PS $40.00 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. 1,5727860 2026-10-02: 1,463 OI2026-10-05: 1,463 OI2026-10-06: 1,464 OI2026-10-07: 1,503 OI2026-10-08: 1,518 OI2026-10-09: 1,521 OI2026-10-13: 1,544 OI2026-10-14: 1,547 OI2026-10-16: 1,565 OI2026-10-21: 1,572 OI2026-10-23: 1,572 OI Oct 02, 2026Oct 23, 2026

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

PS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20261,5720
Oct 21, 2026Viewing1,572+7
Oct 16, 20261,565+18
Oct 14, 20261,547+3
Oct 13, 20261,544+23
Oct 09, 20261,521+3
Oct 08, 20261,518+15
Oct 07, 20261,503+39
Oct 06, 20261,464+1
Oct 05, 20261,4630
Oct 02, 20261,463No prior observation