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Contract OI history

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Dec 18, 2026 EXPIRATION

CIEN $340.00 Put

CIEN261218P00340000

Latest saved OI236Oct 23, 2026
Last change+3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CIEN $340.00 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. 2361180 2026-10-02: 178 OI2026-10-05: 177 OI2026-10-06: 197 OI2026-10-07: 201 OI2026-10-08: 201 OI2026-10-09: 209 OI2026-10-13: 211 OI2026-10-14: 211 OI2026-10-15: 211 OI2026-10-16: 224 OI2026-10-21: 233 OI2026-10-23: 236 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, 2026Viewing236+3
Oct 21, 2026233+9
Oct 16, 2026224+13
Oct 15, 20262110
Oct 14, 20262110
Oct 13, 2026211+2
Oct 09, 2026209+8
Oct 08, 20262010
Oct 07, 2026201+4
Oct 06, 2026197+20
Oct 05, 2026177-1
Oct 02, 2026178No prior observation