OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

CLS $320.00 Put

CLS270115P00320000

Latest saved OI507Oct 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. 5112550 2026-10-02: 504 OI2026-10-05: 504 OI2026-10-06: 501 OI2026-10-07: 502 OI2026-10-08: 502 OI2026-10-09: 502 OI2026-10-13: 504 OI2026-10-14: 504 OI2026-10-15: 511 OI2026-10-16: 511 OI2026-10-21: 508 OI2026-10-23: 507 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, 2026Viewing507-1
Oct 21, 2026508-3
Oct 16, 20265110
Oct 15, 2026511+7
Oct 14, 20265040
Oct 13, 2026504+2
Oct 09, 20265020
Oct 08, 20265020
Oct 07, 2026502+1
Oct 06, 2026501-3
Oct 05, 20265040
Oct 02, 2026504No prior observation