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Contract OI history

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Dec 18, 2026 EXPIRATION

ZS $320.00 Call

ZS261218C00320000

Latest saved OI255Oct 23, 2026
Last change+11vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ZS $320.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2551270 2026-10-09: 244 OI2026-10-12: 244 OI2026-10-14: 244 OI2026-10-15: 243 OI2026-10-16: 243 OI2026-10-21: 244 OI2026-10-23: 255 OI Oct 09, 2026Oct 23, 2026

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

ZS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing255+11
Oct 21, 2026244+1
Oct 16, 20262430
Oct 15, 2026243-1
Oct 14, 20262440
Oct 12, 20262440
Oct 09, 2026244No prior observation