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Contract OI history

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Dec 18, 2026 EXPIRATION

ERAS $22.50 Call

ERAS261218C00022500

Latest saved OI181Oct 23, 2026
Last change0vs previous saved observation
Saved market days8Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
ERAS $22.50 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. 181900 2026-10-08: 80 OI2026-10-09: 180 OI2026-10-13: 181 OI2026-10-14: 181 OI2026-10-15: 181 OI2026-10-16: 181 OI2026-10-21: 181 OI2026-10-23: 181 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, 2026Viewing1810
Oct 21, 20261810
Oct 16, 20261810
Oct 15, 20261810
Oct 14, 20261810
Oct 13, 2026181+1
Oct 09, 2026180+100
Oct 08, 202680No prior observation