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Contract OI history

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Dec 18, 2026 EXPIRATION

TTEK $40.00 Call

TTEK261218C00040000

Latest saved OI520Oct 23, 2026
Last change+8vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
TTEK $40.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 5202600 2026-10-09: 459 OI2026-10-13: 509 OI2026-10-14: 509 OI2026-10-15: 509 OI2026-10-16: 509 OI2026-10-21: 512 OI2026-10-23: 520 OI Oct 09, 2026Oct 23, 2026

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

TTEK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing520+8
Oct 21, 2026512+3
Oct 16, 20265090
Oct 15, 20265090
Oct 14, 20265090
Oct 13, 2026509+50
Oct 09, 2026459No prior observation