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Contract OI history

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Dec 18, 2026 EXPIRATION

CSX $50.00 Put

CSX261218P00050000

Latest saved OI563Oct 23, 2026
Last change+25vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CSX $50.00 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. 5632810 2026-10-09: 538 OI2026-10-13: 538 OI2026-10-14: 538 OI2026-10-15: 538 OI2026-10-16: 538 OI2026-10-21: 538 OI2026-10-23: 563 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, 2026Viewing563+25
Oct 21, 20265380
Oct 16, 20265380
Oct 15, 20265380
Oct 14, 20265380
Oct 13, 20265380
Oct 09, 2026538No prior observation