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Contract OI history

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Nov 20, 2026 EXPIRATION

YSS $2.50 Put

YSS261120P00002500

Latest saved OI600Oct 23, 2026
Last change+161vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
YSS $2.50 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. 6003000 2026-10-02: 21 OI2026-10-05: 21 OI2026-10-06: 21 OI2026-10-07: 21 OI2026-10-09: 21 OI2026-10-13: 31 OI2026-10-14: 31 OI2026-10-16: 439 OI2026-10-20: 439 OI2026-10-23: 600 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, 2026Viewing600+161
Oct 20, 20264390
Oct 16, 2026439+408
Oct 14, 2026310
Oct 13, 202631+10
Oct 09, 2026210
Oct 07, 2026210
Oct 06, 2026210
Oct 05, 2026210
Oct 02, 202621No prior observation