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Contract OI history

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Nov 20, 2026 EXPIRATION

AMGN $400.00 Put

AMGN261120P00400000

Latest saved OI291Oct 23, 2026
Last change-13vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
AMGN $400.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 3041520 2026-10-09: 272 OI2026-10-13: 272 OI2026-10-14: 272 OI2026-10-15: 299 OI2026-10-16: 250 OI2026-10-21: 304 OI2026-10-23: 291 OI Oct 09, 2026Oct 23, 2026

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

AMGN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing291-13
Oct 21, 2026304+54
Oct 16, 2026250-49
Oct 15, 2026299+27
Oct 14, 20262720
Oct 13, 20262720
Oct 09, 2026272No prior observation