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Contract OI history

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Dec 18, 2026 EXPIRATION

PRAX $320.00 Put

PRAX261218P00320000

Latest saved OI902Oct 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 $320.00 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. 9024510 2026-10-09: 901 OI2026-10-13: 901 OI2026-10-15: 901 OI2026-10-16: 901 OI2026-10-20: 901 OI2026-10-23: 902 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, 2026Viewing902+1
Oct 20, 20269010
Oct 16, 20269010
Oct 15, 20269010
Oct 13, 20269010
Oct 09, 2026901No prior observation