OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

OSS $17.50 Put

OSS270115P00017500

Latest saved OI100Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
OSS $17.50 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 110550 2026-10-08: 110 OI2026-10-09: 110 OI2026-10-13: 101 OI2026-10-14: 100 OI2026-10-16: 100 OI2026-10-20: 100 OI2026-10-23: 100 OI Oct 08, 2026Oct 23, 2026

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

OSS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1000
Oct 20, 20261000
Oct 16, 20261000
Oct 14, 2026100-1
Oct 13, 2026101-9
Oct 09, 20261100
Oct 08, 2026110No prior observation