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Contract OI history

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Jan 21, 2028 EXPIRATION

OLN $17.50 Call

OLN280121C00017500

Latest saved OI399Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
OLN $17.50 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4002000 2026-10-02: 122 OI2026-10-05: 122 OI2026-10-06: 123 OI2026-10-07: 123 OI2026-10-08: 123 OI2026-10-09: 163 OI2026-10-13: 399 OI2026-10-14: 399 OI2026-10-15: 399 OI2026-10-16: 399 OI2026-10-21: 400 OI2026-10-23: 399 OI Oct 02, 2026Oct 23, 2026

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

OLN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing399-1
Oct 21, 2026400+1
Oct 16, 20263990
Oct 15, 20263990
Oct 14, 20263990
Oct 13, 2026399+236
Oct 09, 2026163+40
Oct 08, 20261230
Oct 07, 20261230
Oct 06, 2026123+1
Oct 05, 20261220
Oct 02, 2026122No prior observation