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Contract OI history

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Nov 20, 2026 EXPIRATION

ERAS $12.50 Put

ERAS261120P00012500

Latest saved OI3,196Oct 23, 2026
Last change-1vs previous saved observation
Saved market days8Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
ERAS $12.50 put open interest history 8 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 3,9521,9760 2026-10-08: 3,952 OI2026-10-09: 3,371 OI2026-10-13: 3,374 OI2026-10-14: 3,254 OI2026-10-15: 3,258 OI2026-10-16: 3,183 OI2026-10-21: 3,197 OI2026-10-23: 3,196 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, 2026Viewing3,196-1
Oct 21, 20263,197+14
Oct 16, 20263,183-75
Oct 15, 20263,258+4
Oct 14, 20263,254-120
Oct 13, 20263,374+3
Oct 09, 20263,371-581
Oct 08, 20263,952No prior observation