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Contract OI history

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Jan 21, 2028 EXPIRATION

PRAX $135.00 Put

PRAX280121P00135000

Latest saved OI1,000Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
PRAX $135.00 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. 1,0005000 2026-10-09: 1,000 OI2026-10-13: 1,000 OI2026-10-15: 1,000 OI2026-10-16: 1,000 OI2026-10-20: 1,000 OI2026-10-23: 1,000 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, 2026Viewing1,0000
Oct 20, 20261,0000
Oct 16, 20261,0000
Oct 15, 20261,0000
Oct 13, 20261,0000
Oct 09, 20261,000No prior observation