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Contract OI history

Back to XXI

Jan 21, 2028 EXPIRATION

XXI $2.50 Put

XXI280121P00002500

Latest saved OI79Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
XXI $2.50 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. 79390 2026-10-02: 76 OI2026-10-05: 76 OI2026-10-06: 77 OI2026-10-07: 77 OI2026-10-08: 77 OI2026-10-09: 77 OI2026-10-13: 77 OI2026-10-14: 77 OI2026-10-15: 77 OI2026-10-16: 78 OI2026-10-21: 78 OI2026-10-23: 79 OI Oct 02, 2026Oct 23, 2026

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

XXI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 202679+1
Oct 21, 2026Viewing780
Oct 16, 202678+1
Oct 15, 2026770
Oct 14, 2026770
Oct 13, 2026770
Oct 09, 2026770
Oct 08, 2026770
Oct 07, 2026770
Oct 06, 202677+1
Oct 05, 2026760
Oct 02, 202676No prior observation