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Contract OI history

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Dec 17, 2027 EXPIRATION

ERAS $22.50 Call

ERAS271217C00022500

Latest saved OI943Oct 23, 2026
Last change+4vs 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. 9434710 2026-10-08: 896 OI2026-10-09: 896 OI2026-10-13: 939 OI2026-10-14: 939 OI2026-10-15: 939 OI2026-10-16: 939 OI2026-10-21: 939 OI2026-10-23: 943 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, 2026Viewing943+4
Oct 21, 20269390
Oct 16, 20269390
Oct 15, 20269390
Oct 14, 20269390
Oct 13, 2026939+43
Oct 09, 20268960
Oct 08, 2026896No prior observation