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Contract OI history

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Mar 19, 2027 EXPIRATION

GBX $40.00 Put

GBX270319P00040000

Latest saved OI118Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
GBX $40.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 118590 2026-10-02: 107 OI2026-10-05: 107 OI2026-10-06: 107 OI2026-10-07: 112 OI2026-10-08: 113 OI2026-10-09: 113 OI2026-10-13: 113 OI2026-10-14: 113 OI2026-10-16: 113 OI2026-10-20: 118 OI2026-10-23: 118 OI Oct 02, 2026Oct 23, 2026

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

GBX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1180
Oct 20, 2026118+5
Oct 16, 20261130
Oct 14, 20261130
Oct 13, 20261130
Oct 09, 20261130
Oct 08, 2026113+1
Oct 07, 2026112+5
Oct 06, 20261070
Oct 05, 20261070
Oct 02, 2026107No prior observation