OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

CSX $40.00 Put

CSX270319P00040000

Latest saved OI1,704Oct 23, 2026
Last change-1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CSX $40.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 1,7108550 2026-10-09: 1,710 OI2026-10-13: 1,705 OI2026-10-14: 1,705 OI2026-10-15: 1,705 OI2026-10-16: 1,705 OI2026-10-21: 1,705 OI2026-10-23: 1,704 OI Oct 09, 2026Oct 23, 2026

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

CSX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,704-1
Oct 21, 20261,7050
Oct 16, 20261,7050
Oct 15, 20261,7050
Oct 14, 20261,7050
Oct 13, 20261,705-5
Oct 09, 20261,710No prior observation