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Contract OI history

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Nov 20, 2026 EXPIRATION

PRTA $9.00 Call

PRTA261120C00009000

Latest saved OI1,028Oct 23, 2026
Last change+985vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
PRTA $9.00 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. 1,0285140 2026-10-08: 38 OI2026-10-09: 38 OI2026-10-13: 38 OI2026-10-14: 38 OI2026-10-16: 38 OI2026-10-20: 43 OI2026-10-23: 1,028 OI Oct 08, 2026Oct 23, 2026

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

PRTA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20261,028+985
Oct 20, 2026Viewing43+5
Oct 16, 2026380
Oct 14, 2026380
Oct 13, 2026380
Oct 09, 2026380
Oct 08, 202638No prior observation