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Contract OI history

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Dec 18, 2026 EXPIRATION

GAP $20.00 Put

GAP261218P00020000

Latest saved OI5,705Oct 23, 2026
Last change-49vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
GAP $20.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5,9122,9560 2026-10-02: 5,887 OI2026-10-05: 5,887 OI2026-10-06: 5,912 OI2026-10-07: 5,911 OI2026-10-08: 5,783 OI2026-10-09: 5,783 OI2026-10-13: 5,783 OI2026-10-14: 5,783 OI2026-10-15: 5,783 OI2026-10-16: 5,783 OI2026-10-21: 5,754 OI2026-10-23: 5,705 OI Oct 02, 2026Oct 23, 2026

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

GAP contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5,705-49
Oct 21, 20265,754-29
Oct 16, 20265,7830
Oct 15, 20265,7830
Oct 14, 20265,7830
Oct 13, 20265,7830
Oct 09, 20265,7830
Oct 08, 20265,783-128
Oct 07, 20265,911-1
Oct 06, 20265,912+25
Oct 05, 20265,8870
Oct 02, 20265,887No prior observation