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Contract OI history

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Oct 23, 2026 EXPIRATION

AMAT $397.50 Put

AMAT261023P00397500

Latest saved OI570Oct 23, 2026
Last change-240vs previous saved observation
Saved market days6Oct 13, 2026 onwards
Daily open interest Hover a point for its date and OI
AMAT $397.50 put open interest history 6 saved observations from 2026-10-13 to 2026-10-23. Exact values and changes are listed in the table below. 8104050 2026-10-13: 0 OI2026-10-14: 0 OI2026-10-15: 7 OI2026-10-16: 102 OI2026-10-21: 810 OI2026-10-23: 570 OI Oct 13, 2026Oct 23, 2026

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

AMAT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing570-240
Oct 21, 2026810+708
Oct 16, 2026102+95
Oct 15, 20267+7
Oct 14, 202600
Oct 13, 20260No prior observation