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Contract OI history

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Jan 21, 2028 EXPIRATION

AMBA $27.50 Put

AMBA280121P00027500

Latest saved OI25Oct 21, 2026
Last change-2vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
AMBA $27.50 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. 27130 2026-10-09: 27 OI2026-10-13: 27 OI2026-10-14: 27 OI2026-10-16: 27 OI2026-10-21: 25 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, 2026Viewing25-2
Oct 16, 2026270
Oct 14, 2026270
Oct 13, 2026270
Oct 09, 202627No prior observation