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Contract OI history

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Jan 21, 2028 EXPIRATION

GTLB $27.50 Call

GTLB280121C00027500

Latest saved OI261Oct 23, 2026
Last change-62vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
GTLB $27.50 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. 3351670 2026-10-09: 335 OI2026-10-13: 323 OI2026-10-14: 323 OI2026-10-15: 323 OI2026-10-16: 323 OI2026-10-21: 323 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.

GTLB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing261-62
Oct 21, 20263230
Oct 16, 20263230
Oct 15, 20263230
Oct 14, 20263230
Oct 13, 2026323-12
Oct 09, 2026335No prior observation