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Contract OI history

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Dec 18, 2026 EXPIRATION

REFR $2.50 Call

REFR261218C00002500

Latest saved OI160Oct 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. 160800 2026-10-08: 150 OI2026-10-09: 150 OI2026-10-13: 152 OI2026-10-14: 155 OI2026-10-16: 157 OI2026-10-20: 160 OI2026-10-23: 160 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, 2026Viewing1600
Oct 20, 2026160+3
Oct 16, 2026157+2
Oct 14, 2026155+3
Oct 13, 2026152+2
Oct 09, 20261500
Oct 08, 2026150No prior observation