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Contract OI history

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May 21, 2027 EXPIRATION

DEFT $500.00 Call

DEFT270521C00000500

Latest saved OI72Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
DEFT $500.00 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. 72360 2026-10-09: 71 OI2026-10-13: 72 OI2026-10-15: 72 OI2026-10-16: 72 OI2026-10-20: 72 OI2026-10-23: 72 OI Oct 09, 2026Oct 23, 2026

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

DEFT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing720
Oct 20, 2026720
Oct 16, 2026720
Oct 15, 2026720
Oct 13, 202672+1
Oct 09, 202671No prior observation