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Contract OI history

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Jan 15, 2027 EXPIRATION

AMSC $18.00 Put

AMSC270115P00018000

Latest saved OI67Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
AMSC $18.00 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 103510 2026-10-08: 103 OI2026-10-09: 97 OI2026-10-13: 97 OI2026-10-14: 97 OI2026-10-16: 97 OI2026-10-21: 67 OI2026-10-23: 67 OI Oct 08, 2026Oct 23, 2026

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

AMSC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing670
Oct 21, 202667-30
Oct 16, 2026970
Oct 14, 2026970
Oct 13, 2026970
Oct 09, 202697-6
Oct 08, 2026103No prior observation