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Contract OI history

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Jan 21, 2028 EXPIRATION

O $55.00 Put

O280121P00055000

Latest saved OI673Oct 23, 2026
Last change+46vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
O $55.00 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. 6733360 2026-10-02: 556 OI2026-10-05: 556 OI2026-10-06: 552 OI2026-10-07: 552 OI2026-10-08: 552 OI2026-10-09: 552 OI2026-10-13: 584 OI2026-10-14: 583 OI2026-10-15: 583 OI2026-10-16: 577 OI2026-10-21: 627 OI2026-10-23: 673 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, 2026Viewing673+46
Oct 21, 2026627+50
Oct 16, 2026577-6
Oct 15, 20265830
Oct 14, 2026583-1
Oct 13, 2026584+32
Oct 09, 20265520
Oct 08, 20265520
Oct 07, 20265520
Oct 06, 2026552-4
Oct 05, 20265560
Oct 02, 2026556No prior observation