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Contract OI history

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Dec 18, 2026 EXPIRATION

AMGN $390.00 Put

AMGN261218P00390000

Latest saved OI338Oct 23, 2026
Last change-10vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
AMGN $390.00 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. 3481740 2026-10-09: 333 OI2026-10-13: 329 OI2026-10-14: 329 OI2026-10-15: 348 OI2026-10-16: 348 OI2026-10-21: 348 OI2026-10-23: 338 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, 2026Viewing338-10
Oct 21, 20263480
Oct 16, 20263480
Oct 15, 2026348+19
Oct 14, 20263290
Oct 13, 2026329-4
Oct 09, 2026333No prior observation