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Contract OI history

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Nov 20, 2026 EXPIRATION

ERAS $17.50 Call

ERAS261120C00017500

Latest saved OI25,317Oct 23, 2026
Last change+13vs 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. 25,32712,6630 2026-10-08: 14,577 OI2026-10-09: 25,281 OI2026-10-13: 25,325 OI2026-10-14: 25,325 OI2026-10-15: 25,321 OI2026-10-16: 25,327 OI2026-10-21: 25,304 OI2026-10-23: 25,317 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, 2026Viewing25,317+13
Oct 21, 202625,304-23
Oct 16, 202625,327+6
Oct 15, 202625,321-4
Oct 14, 202625,3250
Oct 13, 202625,325+44
Oct 09, 202625,281+10,704
Oct 08, 202614,577No prior observation