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Contract OI history

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Nov 20, 2026 EXPIRATION

CLS $320.00 Put

CLS261120P00320000

Latest saved OI649Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CLS $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. 7093540 2026-10-02: 458 OI2026-10-05: 489 OI2026-10-06: 490 OI2026-10-07: 487 OI2026-10-08: 509 OI2026-10-09: 709 OI2026-10-13: 640 OI2026-10-14: 640 OI2026-10-15: 661 OI2026-10-16: 658 OI2026-10-21: 648 OI2026-10-23: 649 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

CLS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing649+1
Oct 21, 2026648-10
Oct 16, 2026658-3
Oct 15, 2026661+21
Oct 14, 20266400
Oct 13, 2026640-69
Oct 09, 2026709+200
Oct 08, 2026509+22
Oct 07, 2026487-3
Oct 06, 2026490+1
Oct 05, 2026489+31
Oct 02, 2026458No prior observation