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Contract OI history

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Oct 30, 2026 EXPIRATION

CIEN $320.00 Put

CIEN261030P00320000

Latest saved OI177Oct 23, 2026
Last change+53vs 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. 177880 2026-10-02: 63 OI2026-10-05: 62 OI2026-10-06: 62 OI2026-10-07: 62 OI2026-10-08: 62 OI2026-10-09: 61 OI2026-10-13: 89 OI2026-10-14: 89 OI2026-10-15: 89 OI2026-10-16: 89 OI2026-10-21: 124 OI2026-10-23: 177 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, 2026Viewing177+53
Oct 21, 2026124+35
Oct 16, 2026890
Oct 15, 2026890
Oct 14, 2026890
Oct 13, 202689+28
Oct 09, 202661-1
Oct 08, 2026620
Oct 07, 2026620
Oct 06, 2026620
Oct 05, 202662-1
Oct 02, 202663No prior observation