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Contract OI history

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Nov 20, 2026 EXPIRATION

AMBA $55.00 Put

AMBA261120P00055000

Latest saved OI407Oct 21, 2026
Last change+5vs 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. 4072030 2026-10-09: 386 OI2026-10-13: 392 OI2026-10-14: 394 OI2026-10-16: 402 OI2026-10-21: 407 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, 2026Viewing407+5
Oct 16, 2026402+8
Oct 14, 2026394+2
Oct 13, 2026392+6
Oct 09, 2026386No prior observation