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Contract OI history

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Dec 18, 2026 EXPIRATION

YSS $22.50 Put

YSS261218P00022500

Latest saved OI0Oct 23, 2026
Last change0vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
YSS $22.50 put open interest history 10 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2171080 2026-10-02: 217 OI2026-10-05: 217 OI2026-10-06: 217 OI2026-10-07: 217 OI2026-10-09: 27 OI2026-10-13: 27 OI2026-10-14: 27 OI2026-10-16: 27 OI2026-10-20: 0 OI2026-10-23: 0 OI Oct 02, 2026Oct 23, 2026

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

YSS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing00
Oct 20, 20260-27
Oct 16, 2026270
Oct 14, 2026270
Oct 13, 2026270
Oct 09, 202627-190
Oct 07, 20262170
Oct 06, 20262170
Oct 05, 20262170
Oct 02, 2026217No prior observation