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Contract OI history

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Jan 21, 2028 EXPIRATION

OLN $17.50 Put

OLN280121P00017500

Latest saved OI1,613Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
OLN $17.50 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,6158070 2026-10-02: 1,495 OI2026-10-05: 1,496 OI2026-10-06: 1,496 OI2026-10-07: 1,496 OI2026-10-08: 1,496 OI2026-10-09: 1,561 OI2026-10-13: 1,615 OI2026-10-14: 1,615 OI2026-10-15: 1,615 OI2026-10-16: 1,613 OI2026-10-21: 1,613 OI2026-10-23: 1,613 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, 2026Viewing1,6130
Oct 21, 20261,6130
Oct 16, 20261,613-2
Oct 15, 20261,6150
Oct 14, 20261,6150
Oct 13, 20261,615+54
Oct 09, 20261,561+65
Oct 08, 20261,4960
Oct 07, 20261,4960
Oct 06, 20261,4960
Oct 05, 20261,496+1
Oct 02, 20261,495No prior observation