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Contract OI history

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Mar 19, 2027 EXPIRATION

O $57.50 Put

O270319P00057500

Latest saved OI346Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
O $57.50 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. 3501750 2026-10-02: 328 OI2026-10-05: 329 OI2026-10-06: 343 OI2026-10-07: 343 OI2026-10-08: 343 OI2026-10-09: 343 OI2026-10-13: 349 OI2026-10-14: 350 OI2026-10-15: 350 OI2026-10-16: 345 OI2026-10-21: 346 OI2026-10-23: 346 OI Oct 02, 2026Oct 23, 2026

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

O contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3460
Oct 21, 2026346+1
Oct 16, 2026345-5
Oct 15, 20263500
Oct 14, 2026350+1
Oct 13, 2026349+6
Oct 09, 20263430
Oct 08, 20263430
Oct 07, 20263430
Oct 06, 2026343+14
Oct 05, 2026329+1
Oct 02, 2026328No prior observation