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Contract OI history

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Nov 20, 2026 EXPIRATION

TWST $220.00 Call

TWST261120C00220000

Latest saved OI1,323Oct 23, 2026
Last change+2vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
TWST $220.00 call open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 1,4547270 2026-10-09: 1,208 OI2026-10-13: 1,450 OI2026-10-14: 1,454 OI2026-10-16: 1,452 OI2026-10-21: 1,321 OI2026-10-23: 1,323 OI Oct 09, 2026Oct 23, 2026

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

TWST contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,323+2
Oct 21, 20261,321-131
Oct 16, 20261,452-2
Oct 14, 20261,454+4
Oct 13, 20261,450+242
Oct 09, 20261,208No prior observation