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Contract OI history

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Nov 20, 2026 EXPIRATION

TWST $155.00 Put

TWST261120P00155000

Latest saved OI261Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
TWST $155.00 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2611300 2026-10-09: 167 OI2026-10-13: 167 OI2026-10-14: 235 OI2026-10-16: 238 OI2026-10-21: 261 OI2026-10-23: 261 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, 2026Viewing2610
Oct 21, 2026261+23
Oct 16, 2026238+3
Oct 14, 2026235+68
Oct 13, 20261670
Oct 09, 2026167No prior observation