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Contract OI history

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Nov 20, 2026 EXPIRATION

CIEN $290.00 Put

CIEN261120P00290000

Latest saved OI343Oct 23, 2026
Last change+5vs 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. 3431710 2026-10-02: 172 OI2026-10-05: 176 OI2026-10-06: 177 OI2026-10-07: 177 OI2026-10-08: 177 OI2026-10-09: 157 OI2026-10-13: 160 OI2026-10-14: 160 OI2026-10-15: 172 OI2026-10-16: 186 OI2026-10-21: 338 OI2026-10-23: 343 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, 2026Viewing343+5
Oct 21, 2026338+152
Oct 16, 2026186+14
Oct 15, 2026172+12
Oct 14, 20261600
Oct 13, 2026160+3
Oct 09, 2026157-20
Oct 08, 20261770
Oct 07, 20261770
Oct 06, 2026177+1
Oct 05, 2026176+4
Oct 02, 2026172No prior observation