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Contract OI history

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Sep 17, 2027 EXPIRATION

MSFT $645.00 Call

MSFT270917C00645000

Latest saved OI273Oct 23, 2026
Last change+12vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $645.00 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. 2731360 2026-10-09: 221 OI2026-10-13: 222 OI2026-10-14: 222 OI2026-10-15: 256 OI2026-10-16: 256 OI2026-10-21: 261 OI2026-10-23: 273 OI Oct 09, 2026Oct 23, 2026

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

MSFT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing273+12
Oct 21, 2026261+5
Oct 16, 20262560
Oct 15, 2026256+34
Oct 14, 20262220
Oct 13, 2026222+1
Oct 09, 2026221No prior observation