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Contract OI history

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Dec 18, 2026 EXPIRATION

PRDO $35.00 Put

PRDO261218P00035000

Latest saved OI3Oct 23, 2026
Last change+2vs previous saved observation
Saved market days3Oct 16, 2026 onwards
Daily open interest Hover a point for its date and OI
PRDO $35.00 put open interest history 3 saved observations from 2026-10-16 to 2026-10-23. Exact values and changes are listed in the table below. 310 2026-10-16: 0 OI2026-10-20: 1 OI2026-10-23: 3 OI Oct 16, 2026Oct 23, 2026

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

PRDO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3+2
Oct 20, 20261+1
Oct 16, 20260No prior observation