OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

IA $17.50 Put

IA270115P00017500

Latest saved OI66Oct 19, 2026
Last change0vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
IA $17.50 put open interest history 6 saved observations from 2026-10-08 to 2026-10-19. Exact values and changes are listed in the table below. 66330 2026-10-08: 65 OI2026-10-09: 66 OI2026-10-13: 66 OI2026-10-14: 66 OI2026-10-16: 66 OI2026-10-19: 66 OI Oct 08, 2026Oct 19, 2026

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

IA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 19, 2026Viewing660
Oct 16, 2026660
Oct 14, 2026660
Oct 13, 2026660
Oct 09, 202666+1
Oct 08, 202665No prior observation