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Contract OI history

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Nov 20, 2026 EXPIRATION

OLN $27.50 Put

OLN261120P00027500

Latest saved OI200Oct 23, 2026
Last change-14vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
OLN $27.50 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. 3331660 2026-10-02: 333 OI2026-10-05: 319 OI2026-10-06: 302 OI2026-10-07: 280 OI2026-10-08: 255 OI2026-10-09: 223 OI2026-10-13: 222 OI2026-10-14: 222 OI2026-10-15: 222 OI2026-10-16: 222 OI2026-10-21: 214 OI2026-10-23: 200 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, 2026Viewing200-14
Oct 21, 2026214-8
Oct 16, 20262220
Oct 15, 20262220
Oct 14, 20262220
Oct 13, 2026222-1
Oct 09, 2026223-32
Oct 08, 2026255-25
Oct 07, 2026280-22
Oct 06, 2026302-17
Oct 05, 2026319-14
Oct 02, 2026333No prior observation