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Contract OI history

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Jan 19, 2029 EXPIRATION

CIA $2.50 Put

CIA290119P00002500

Latest saved OI1,300Oct 23, 2026
Last change+194vs 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. 1,3006500 2026-10-02: 106 OI2026-10-05: 106 OI2026-10-06: 107 OI2026-10-07: 108 OI2026-10-08: 109 OI2026-10-09: 110 OI2026-10-13: 114 OI2026-10-14: 1,106 OI2026-10-16: 1,106 OI2026-10-20: 1,106 OI2026-10-23: 1,300 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, 2026Viewing1,300+194
Oct 20, 20261,1060
Oct 16, 20261,1060
Oct 14, 20261,106+992
Oct 13, 2026114+4
Oct 09, 2026110+1
Oct 08, 2026109+1
Oct 07, 2026108+1
Oct 06, 2026107+1
Oct 05, 20261060
Oct 02, 2026106No prior observation