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Contract OI history

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Jan 21, 2028 EXPIRATION

GTLB $17.50 Put

GTLB280121P00017500

Latest saved OI9,981Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
GTLB $17.50 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 10,0175,0080 2026-10-09: 10,017 OI2026-10-13: 9,981 OI2026-10-14: 9,981 OI2026-10-15: 9,981 OI2026-10-16: 9,981 OI2026-10-21: 9,981 OI2026-10-23: 9,981 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, 2026Viewing9,9810
Oct 21, 20269,9810
Oct 16, 20269,9810
Oct 15, 20269,9810
Oct 14, 20269,9810
Oct 13, 20269,981-36
Oct 09, 202610,017No prior observation