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Contract OI history

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Mar 19, 2027 EXPIRATION

PSO $17.50 Call

PSO270319C00017500

Latest saved OI429Oct 23, 2026
Last change0vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PSO $17.50 call open interest history 10 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4292140 2026-10-02: 409 OI2026-10-05: 429 OI2026-10-06: 429 OI2026-10-07: 429 OI2026-10-09: 429 OI2026-10-13: 429 OI2026-10-14: 429 OI2026-10-16: 429 OI2026-10-20: 429 OI2026-10-23: 429 OI Oct 02, 2026Oct 23, 2026

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

PSO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20264290
Oct 20, 2026Viewing4290
Oct 16, 20264290
Oct 14, 20264290
Oct 13, 20264290
Oct 09, 20264290
Oct 07, 20264290
Oct 06, 20264290
Oct 05, 2026429+20
Oct 02, 2026409No prior observation