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Contract OI history

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Jan 21, 2028 EXPIRATION

PTLO $4.00 Put

PTLO280121P00004000

Latest saved OI13,413Oct 23, 2026
Last change-19vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
PTLO $4.00 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 13,4556,7270 2026-10-08: 4,469 OI2026-10-09: 4,469 OI2026-10-13: 4,469 OI2026-10-14: 4,469 OI2026-10-16: 13,455 OI2026-10-20: 13,432 OI2026-10-23: 13,413 OI Oct 08, 2026Oct 23, 2026

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

PTLO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing13,413-19
Oct 20, 202613,432-23
Oct 16, 202613,455+8,986
Oct 14, 20264,4690
Oct 13, 20264,4690
Oct 09, 20264,4690
Oct 08, 20264,469No prior observation