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Contract OI history

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Mar 19, 2027 EXPIRATION

REFR $2.50 Call

REFR270319C00002500

Latest saved OI437Oct 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. 4372180 2026-10-08: 436 OI2026-10-09: 436 OI2026-10-13: 437 OI2026-10-14: 437 OI2026-10-16: 437 OI2026-10-20: 437 OI2026-10-23: 437 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, 2026Viewing4370
Oct 20, 20264370
Oct 16, 20264370
Oct 14, 20264370
Oct 13, 2026437+1
Oct 09, 20264360
Oct 08, 2026436No prior observation