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Contract OI history

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Jan 21, 2028 EXPIRATION

PTCT $75.00 Call

PTCT280121C00075000

Latest saved OI59Oct 23, 2026
Last change+6vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
PTCT $75.00 call open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 59290 2026-10-08: 46 OI2026-10-09: 46 OI2026-10-13: 49 OI2026-10-14: 49 OI2026-10-16: 49 OI2026-10-20: 53 OI2026-10-23: 59 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, 202659+6
Oct 20, 2026Viewing53+4
Oct 16, 2026490
Oct 14, 2026490
Oct 13, 202649+3
Oct 09, 2026460
Oct 08, 202646No prior observation