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Contract OI history

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Jan 21, 2028 EXPIRATION

AMSC $15.00 Put

AMSC280121P00015000

Latest saved OI173Oct 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 $15.00 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. 173860 2026-10-08: 168 OI2026-10-09: 168 OI2026-10-13: 168 OI2026-10-14: 170 OI2026-10-16: 170 OI2026-10-21: 171 OI2026-10-23: 173 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, 2026Viewing173+2
Oct 21, 2026171+1
Oct 16, 20261700
Oct 14, 2026170+2
Oct 13, 20261680
Oct 09, 20261680
Oct 08, 2026168No prior observation