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Contract OI history

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Dec 18, 2026 EXPIRATION

CIEN $290.00 Put

CIEN261218P00290000

Latest saved OI499Oct 23, 2026
Last change+2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CIEN $290.00 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. 5812900 2026-10-02: 581 OI2026-10-05: 512 OI2026-10-06: 500 OI2026-10-07: 499 OI2026-10-08: 499 OI2026-10-09: 495 OI2026-10-13: 517 OI2026-10-14: 517 OI2026-10-15: 495 OI2026-10-16: 498 OI2026-10-21: 497 OI2026-10-23: 499 OI Oct 02, 2026Oct 23, 2026

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

CIEN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing499+2
Oct 21, 2026497-1
Oct 16, 2026498+3
Oct 15, 2026495-22
Oct 14, 20265170
Oct 13, 2026517+22
Oct 09, 2026495-4
Oct 08, 20264990
Oct 07, 2026499-1
Oct 06, 2026500-12
Oct 05, 2026512-69
Oct 02, 2026581No prior observation