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Contract OI history

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May 21, 2027 EXPIRATION

OLN $20.00 Put

OLN270521P00020000

Latest saved OI265Oct 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 $20.00 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. 2651320 2026-10-02: 104 OI2026-10-05: 104 OI2026-10-06: 104 OI2026-10-07: 104 OI2026-10-08: 104 OI2026-10-09: 114 OI2026-10-13: 265 OI2026-10-14: 265 OI2026-10-15: 265 OI2026-10-16: 265 OI2026-10-21: 265 OI2026-10-23: 265 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, 2026Viewing2650
Oct 21, 20262650
Oct 16, 20262650
Oct 15, 20262650
Oct 14, 20262650
Oct 13, 2026265+151
Oct 09, 2026114+10
Oct 08, 20261040
Oct 07, 20261040
Oct 06, 20261040
Oct 05, 20261040
Oct 02, 2026104No prior observation