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Contract OI history

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Dec 18, 2026 EXPIRATION

CIEN $400.00 Put

CIEN261218P00400000

Latest saved OI273Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CIEN $400.00 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. 2761380 2026-10-02: 258 OI2026-10-05: 261 OI2026-10-06: 271 OI2026-10-07: 271 OI2026-10-08: 271 OI2026-10-09: 276 OI2026-10-13: 272 OI2026-10-14: 272 OI2026-10-15: 271 OI2026-10-16: 272 OI2026-10-21: 273 OI2026-10-23: 273 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, 2026Viewing2730
Oct 21, 2026273+1
Oct 16, 2026272+1
Oct 15, 2026271-1
Oct 14, 20262720
Oct 13, 2026272-4
Oct 09, 2026276+5
Oct 08, 20262710
Oct 07, 20262710
Oct 06, 2026271+10
Oct 05, 2026261+3
Oct 02, 2026258No prior observation