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Contract OI history

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Dec 18, 2026 EXPIRATION

PRTA $11.00 Call

PRTA261218C00011000

Latest saved OI2,018Oct 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. 2,0181,0090 2026-10-08: 2,018 OI2026-10-09: 2,018 OI2026-10-13: 2,018 OI2026-10-14: 2,018 OI2026-10-16: 2,018 OI2026-10-20: 2,018 OI2026-10-23: 2,018 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, 2026Viewing2,0180
Oct 20, 20262,0180
Oct 16, 20262,0180
Oct 14, 20262,0180
Oct 13, 20262,0180
Oct 09, 20262,0180
Oct 08, 20262,018No prior observation