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Contract OI history

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Nov 20, 2026 EXPIRATION

OSS $12.50 Put

OSS261120P00012500

Latest saved OI9Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
OSS $12.50 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 86430 2026-10-08: 86 OI2026-10-09: 76 OI2026-10-13: 74 OI2026-10-14: 74 OI2026-10-16: 9 OI2026-10-20: 9 OI2026-10-23: 9 OI Oct 08, 2026Oct 23, 2026

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

OSS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing90
Oct 20, 202690
Oct 16, 20269-65
Oct 14, 2026740
Oct 13, 202674-2
Oct 09, 202676-10
Oct 08, 202686No prior observation