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Contract OI history

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Dec 18, 2026 EXPIRATION

CERS $1.50 Call

CERS261218C00001500

Latest saved OI259Oct 23, 2026
Last change-1vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CERS $1.50 call open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2711350 2026-10-09: 271 OI2026-10-13: 266 OI2026-10-14: 265 OI2026-10-16: 260 OI2026-10-20: 260 OI2026-10-23: 259 OI Oct 09, 2026Oct 23, 2026

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

CERS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing259-1
Oct 20, 20262600
Oct 16, 2026260-5
Oct 14, 2026265-1
Oct 13, 2026266-5
Oct 09, 2026271No prior observation