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Contract OI history

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Mar 17, 2028 EXPIRATION

PRAX $550.00 Put

PRAX280317P00550000

Latest saved OI1Oct 23, 2026
Last change+1vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
PRAX $550.00 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 10 2026-10-09: 0 OI2026-10-13: 0 OI2026-10-15: 0 OI2026-10-16: 0 OI2026-10-20: 0 OI2026-10-23: 1 OI Oct 09, 2026Oct 23, 2026

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

PRAX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1+1
Oct 20, 202600
Oct 16, 202600
Oct 15, 202600
Oct 13, 202600
Oct 09, 20260No prior observation