OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

SION $5.00 Put

SION270115P00005000

Latest saved OI595Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SION $5.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 5952970 2026-10-09: 594 OI2026-10-13: 594 OI2026-10-14: 595 OI2026-10-15: 595 OI2026-10-16: 595 OI2026-10-20: 595 OI2026-10-23: 595 OI Oct 09, 2026Oct 23, 2026

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

SION contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20265950
Oct 20, 2026Viewing5950
Oct 16, 20265950
Oct 15, 20265950
Oct 14, 2026595+1
Oct 13, 20265940
Oct 09, 2026594No prior observation