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Contract OI history

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Nov 20, 2026 EXPIRATION

PS $55.00 Put

PS261120P00055000

Latest saved OI158Oct 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 $55.00 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. 170850 2026-10-02: 94 OI2026-10-05: 94 OI2026-10-06: 94 OI2026-10-07: 162 OI2026-10-08: 170 OI2026-10-09: 168 OI2026-10-13: 169 OI2026-10-14: 158 OI2026-10-16: 158 OI2026-10-21: 158 OI2026-10-23: 158 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, 20261580
Oct 21, 2026Viewing1580
Oct 16, 20261580
Oct 14, 2026158-11
Oct 13, 2026169+1
Oct 09, 2026168-2
Oct 08, 2026170+8
Oct 07, 2026162+68
Oct 06, 2026940
Oct 05, 2026940
Oct 02, 202694No prior observation