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Contract OI history

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Jan 15, 2027 EXPIRATION

PRTA $11.00 Call

PRTA270115C00011000

Latest saved OI35Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
PRTA $11.00 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. 35170 2026-10-08: 27 OI2026-10-09: 35 OI2026-10-13: 35 OI2026-10-14: 35 OI2026-10-16: 35 OI2026-10-20: 35 OI2026-10-23: 35 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, 2026350
Oct 20, 2026Viewing350
Oct 16, 2026350
Oct 14, 2026350
Oct 13, 2026350
Oct 09, 202635+8
Oct 08, 202627No prior observation