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Contract OI history

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Jan 19, 2029 EXPIRATION

YSS $17.50 Put

YSS290119P00017500

Latest saved OI100Oct 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 $17.50 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. 3881940 2026-10-02: 6 OI2026-10-05: 6 OI2026-10-06: 8 OI2026-10-07: 8 OI2026-10-09: 9 OI2026-10-13: 9 OI2026-10-14: 9 OI2026-10-16: 388 OI2026-10-20: 100 OI2026-10-23: 100 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, 2026Viewing1000
Oct 20, 2026100-288
Oct 16, 2026388+379
Oct 14, 202690
Oct 13, 202690
Oct 09, 20269+1
Oct 07, 202680
Oct 06, 20268+2
Oct 05, 202660
Oct 02, 20266No prior observation