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Contract OI history

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Jan 15, 2027 EXPIRATION

PRTA $9.00 Call

PRTA270115C00009000

Latest saved OI131Oct 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 $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. 131650 2026-10-08: 129 OI2026-10-09: 129 OI2026-10-13: 129 OI2026-10-14: 129 OI2026-10-16: 129 OI2026-10-20: 131 OI2026-10-23: 131 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, 20261310
Oct 20, 2026Viewing131+2
Oct 16, 20261290
Oct 14, 20261290
Oct 13, 20261290
Oct 09, 20261290
Oct 08, 2026129No prior observation