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Contract OI history

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Nov 20, 2026 EXPIRATION

ARDT $12.50 Call

ARDT261120C00012500

Latest saved OI194Oct 21, 2026
Last change+17vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ARDT $12.50 call open interest history 11 saved observations from 2026-10-02 to 2026-10-21. Exact values and changes are listed in the table below. 194970 2026-10-02: 146 OI2026-10-05: 146 OI2026-10-06: 146 OI2026-10-07: 146 OI2026-10-08: 146 OI2026-10-09: 146 OI2026-10-13: 148 OI2026-10-14: 178 OI2026-10-15: 177 OI2026-10-16: 177 OI2026-10-21: 194 OI Oct 02, 2026Oct 21, 2026

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

ARDT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 21, 2026Viewing194+17
Oct 16, 20261770
Oct 15, 2026177-1
Oct 14, 2026178+30
Oct 13, 2026148+2
Oct 09, 20261460
Oct 08, 20261460
Oct 07, 20261460
Oct 06, 20261460
Oct 05, 20261460
Oct 02, 2026146No prior observation