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Contract OI history

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Nov 20, 2026 EXPIRATION

WAT $390.00 Call

WAT261120C00390000

Latest saved OI24Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WAT $390.00 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 24120 2026-10-02: 10 OI2026-10-05: 10 OI2026-10-06: 10 OI2026-10-07: 10 OI2026-10-08: 10 OI2026-10-09: 10 OI2026-10-14: 23 OI2026-10-15: 24 OI2026-10-16: 24 OI2026-10-21: 24 OI2026-10-23: 24 OI Oct 02, 2026Oct 23, 2026

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

WAT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026240
Oct 21, 2026Viewing240
Oct 16, 2026240
Oct 15, 202624+1
Oct 14, 202623+13
Oct 09, 2026100
Oct 08, 2026100
Oct 07, 2026100
Oct 06, 2026100
Oct 05, 2026100
Oct 02, 202610No prior observation