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Contract OI history

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Dec 18, 2026 EXPIRATION

AMBA $55.00 Put

AMBA261218P00055000

Latest saved OI123Oct 21, 2026
Last change+13vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
AMBA $55.00 put open interest history 5 saved observations from 2026-10-09 to 2026-10-21. Exact values and changes are listed in the table below. 123610 2026-10-09: 113 OI2026-10-13: 113 OI2026-10-14: 113 OI2026-10-16: 110 OI2026-10-21: 123 OI Oct 09, 2026Oct 21, 2026

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

AMBA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 21, 2026Viewing123+13
Oct 16, 2026110-3
Oct 14, 20261130
Oct 13, 20261130
Oct 09, 2026113No prior observation