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Contract OI history

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Nov 20, 2026 EXPIRATION

MASS $12.50 Call

MASS261120C00012500

Latest saved OI158Oct 23, 2026
Last change+9vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MASS $12.50 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 158790 2026-10-09: 144 OI2026-10-13: 144 OI2026-10-14: 144 OI2026-10-15: 144 OI2026-10-16: 144 OI2026-10-21: 149 OI2026-10-23: 158 OI Oct 09, 2026Oct 23, 2026

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

MASS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026158+9
Oct 21, 2026Viewing149+5
Oct 16, 20261440
Oct 15, 20261440
Oct 14, 20261440
Oct 13, 20261440
Oct 09, 2026144No prior observation