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Contract OI history

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Nov 20, 2026 EXPIRATION

CSX $42.50 Put

CSX261120P00042500

Latest saved OI499Oct 23, 2026
Last change-5vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CSX $42.50 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. 5092540 2026-10-09: 509 OI2026-10-13: 506 OI2026-10-14: 506 OI2026-10-15: 506 OI2026-10-16: 504 OI2026-10-21: 504 OI2026-10-23: 499 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, 2026Viewing499-5
Oct 21, 20265040
Oct 16, 2026504-2
Oct 15, 20265060
Oct 14, 20265060
Oct 13, 2026506-3
Oct 09, 2026509No prior observation