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Contract OI history

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Dec 18, 2026 EXPIRATION

W $77.50 Put

W261218P00077500

Latest saved OI66Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
W $77.50 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. 66330 2026-10-02: 58 OI2026-10-05: 58 OI2026-10-06: 58 OI2026-10-07: 58 OI2026-10-08: 58 OI2026-10-09: 58 OI2026-10-13: 58 OI2026-10-14: 58 OI2026-10-15: 56 OI2026-10-16: 66 OI2026-10-21: 66 OI2026-10-23: 66 OI Oct 02, 2026Oct 23, 2026

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

W contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026660
Oct 21, 2026Viewing660
Oct 16, 202666+10
Oct 15, 202656-2
Oct 14, 2026580
Oct 13, 2026580
Oct 09, 2026580
Oct 08, 2026580
Oct 07, 2026580
Oct 06, 2026580
Oct 05, 2026580
Oct 02, 202658No prior observation