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Contract OI history

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Nov 20, 2026 EXPIRATION

AMSC $27.00 Put

AMSC261120P00027000

Latest saved OI162Oct 23, 2026
Last change-2vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
AMSC $27.00 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. 2101050 2026-10-08: 204 OI2026-10-09: 204 OI2026-10-13: 210 OI2026-10-14: 173 OI2026-10-16: 173 OI2026-10-21: 164 OI2026-10-23: 162 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, 2026Viewing162-2
Oct 21, 2026164-9
Oct 16, 20261730
Oct 14, 2026173-37
Oct 13, 2026210+6
Oct 09, 20262040
Oct 08, 2026204No prior observation