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Contract OI history

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Dec 18, 2026 EXPIRATION

ERAS $17.50 Call

ERAS261218C00017500

Latest saved OI828Oct 23, 2026
Last change+36vs previous saved observation
Saved market days8Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
ERAS $17.50 call open interest history 8 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 9014500 2026-10-08: 901 OI2026-10-09: 781 OI2026-10-13: 781 OI2026-10-14: 781 OI2026-10-15: 780 OI2026-10-16: 780 OI2026-10-21: 792 OI2026-10-23: 828 OI Oct 08, 2026Oct 23, 2026

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

ERAS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing828+36
Oct 21, 2026792+12
Oct 16, 20267800
Oct 15, 2026780-1
Oct 14, 20267810
Oct 13, 20267810
Oct 09, 2026781-120
Oct 08, 2026901No prior observation