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Contract OI history

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Dec 18, 2026 EXPIRATION

YSS $10.00 Put

YSS261218P00010000

Latest saved OI509Oct 23, 2026
Last change-24vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
YSS $10.00 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. 5432710 2026-10-02: 542 OI2026-10-05: 542 OI2026-10-06: 542 OI2026-10-07: 542 OI2026-10-09: 543 OI2026-10-13: 543 OI2026-10-14: 543 OI2026-10-16: 533 OI2026-10-20: 533 OI2026-10-23: 509 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, 2026Viewing509-24
Oct 20, 20265330
Oct 16, 2026533-10
Oct 14, 20265430
Oct 13, 20265430
Oct 09, 2026543+1
Oct 07, 20265420
Oct 06, 20265420
Oct 05, 20265420
Oct 02, 2026542No prior observation