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Contract OI history

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Dec 18, 2026 EXPIRATION

CIEN $320.00 Put

CIEN261218P00320000

Latest saved OI268Oct 23, 2026
Last change+4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CIEN $320.00 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. 2681340 2026-10-02: 176 OI2026-10-05: 178 OI2026-10-06: 180 OI2026-10-07: 179 OI2026-10-08: 179 OI2026-10-09: 186 OI2026-10-13: 229 OI2026-10-14: 229 OI2026-10-15: 258 OI2026-10-16: 256 OI2026-10-21: 264 OI2026-10-23: 268 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, 2026Viewing268+4
Oct 21, 2026264+8
Oct 16, 2026256-2
Oct 15, 2026258+29
Oct 14, 20262290
Oct 13, 2026229+43
Oct 09, 2026186+7
Oct 08, 20261790
Oct 07, 2026179-1
Oct 06, 2026180+2
Oct 05, 2026178+2
Oct 02, 2026176No prior observation