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Contract OI history

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Nov 20, 2026 EXPIRATION

CIA $2.50 Put

CIA261120P00002500

Latest saved OI1,726Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CIA $2.50 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,7268630 2026-10-02: 1,706 OI2026-10-05: 1,706 OI2026-10-06: 1,706 OI2026-10-07: 1,706 OI2026-10-08: 1,706 OI2026-10-09: 1,706 OI2026-10-13: 1,706 OI2026-10-14: 1,706 OI2026-10-16: 1,706 OI2026-10-20: 1,726 OI2026-10-23: 1,726 OI Oct 02, 2026Oct 23, 2026

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

CIA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,7260
Oct 20, 20261,726+20
Oct 16, 20261,7060
Oct 14, 20261,7060
Oct 13, 20261,7060
Oct 09, 20261,7060
Oct 08, 20261,7060
Oct 07, 20261,7060
Oct 06, 20261,7060
Oct 05, 20261,7060
Oct 02, 20261,706No prior observation