OITracker Cboe delayed data

Contract OI history

Back to TWST

Jan 15, 2027 EXPIRATION

TWST $220.00 Call

TWST270115C00220000

Latest saved OI149Oct 23, 2026
Last change+100vs 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. 149740 2026-10-09: 48 OI2026-10-13: 47 OI2026-10-14: 48 OI2026-10-16: 49 OI2026-10-21: 49 OI2026-10-23: 149 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, 2026Viewing149+100
Oct 21, 2026490
Oct 16, 202649+1
Oct 14, 202648+1
Oct 13, 202647-1
Oct 09, 202648No prior observation