OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

ALGM $55.00 Call

ALGM270115C00055000

Latest saved OI140Oct 23, 2026
Last change-1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALGM $55.00 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. 143710 2026-10-09: 143 OI2026-10-13: 141 OI2026-10-14: 141 OI2026-10-15: 141 OI2026-10-16: 141 OI2026-10-21: 141 OI2026-10-23: 140 OI Oct 09, 2026Oct 23, 2026

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

ALGM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing140-1
Oct 21, 20261410
Oct 16, 20261410
Oct 15, 20261410
Oct 14, 20261410
Oct 13, 2026141-2
Oct 09, 2026143No prior observation