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Contract OI history

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Dec 18, 2026 EXPIRATION

CIEN $300.00 Put

CIEN261218P00300000

Latest saved OI527Oct 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
CIEN $300.00 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. 7713850 2026-10-02: 771 OI2026-10-05: 582 OI2026-10-06: 515 OI2026-10-07: 515 OI2026-10-08: 515 OI2026-10-09: 514 OI2026-10-13: 526 OI2026-10-14: 526 OI2026-10-15: 531 OI2026-10-16: 528 OI2026-10-21: 528 OI2026-10-23: 527 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, 2026Viewing527-1
Oct 21, 20265280
Oct 16, 2026528-3
Oct 15, 2026531+5
Oct 14, 20265260
Oct 13, 2026526+12
Oct 09, 2026514-1
Oct 08, 20265150
Oct 07, 20265150
Oct 06, 2026515-67
Oct 05, 2026582-189
Oct 02, 2026771No prior observation