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Contract OI history

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Jan 15, 2027 EXPIRATION

PTCT $50.00 Put

PTCT270115P00050000

Latest saved OI15Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
PTCT $50.00 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. 1570 2026-10-08: 14 OI2026-10-09: 14 OI2026-10-13: 14 OI2026-10-14: 14 OI2026-10-16: 14 OI2026-10-20: 14 OI2026-10-23: 15 OI Oct 08, 2026Oct 23, 2026

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

PTCT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 202615+1
Oct 20, 2026Viewing140
Oct 16, 2026140
Oct 14, 2026140
Oct 13, 2026140
Oct 09, 2026140
Oct 08, 202614No prior observation