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Contract OI history

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Nov 20, 2026 EXPIRATION

REFR $2.50 Call

REFR261120C00002500

Latest saved OI529Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
REFR $2.50 call open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 5292640 2026-10-08: 529 OI2026-10-09: 529 OI2026-10-13: 529 OI2026-10-14: 529 OI2026-10-16: 529 OI2026-10-20: 529 OI2026-10-23: 529 OI Oct 08, 2026Oct 23, 2026

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

REFR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5290
Oct 20, 20265290
Oct 16, 20265290
Oct 14, 20265290
Oct 13, 20265290
Oct 09, 20265290
Oct 08, 2026529No prior observation