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Contract OI history

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Nov 20, 2026 EXPIRATION

PRAX $220.00 Put

PRAX261120P00220000

Latest saved OI161Oct 23, 2026
Last change+6vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
PRAX $220.00 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. 161800 2026-10-09: 4 OI2026-10-13: 155 OI2026-10-15: 155 OI2026-10-16: 155 OI2026-10-20: 155 OI2026-10-23: 161 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, 2026Viewing161+6
Oct 20, 20261550
Oct 16, 20261550
Oct 15, 20261550
Oct 13, 2026155+151
Oct 09, 20264No prior observation