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Contract OI history

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Jan 15, 2027 EXPIRATION

AMSC $27.00 Put

AMSC270115P00027000

Latest saved OI261Oct 23, 2026
Last change+6vs 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. 2611300 2026-10-08: 251 OI2026-10-09: 251 OI2026-10-13: 253 OI2026-10-14: 255 OI2026-10-16: 255 OI2026-10-21: 255 OI2026-10-23: 261 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, 2026Viewing261+6
Oct 21, 20262550
Oct 16, 20262550
Oct 14, 2026255+2
Oct 13, 2026253+2
Oct 09, 20262510
Oct 08, 2026251No prior observation