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Contract OI history

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Sep 17, 2027 EXPIRATION

MSFT $530.00 Put

MSFT270917P00530000

Latest saved OI367Oct 23, 2026
Last change+57vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $530.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 3671830 2026-10-09: 133 OI2026-10-13: 137 OI2026-10-14: 137 OI2026-10-15: 139 OI2026-10-16: 144 OI2026-10-21: 310 OI2026-10-23: 367 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, 2026Viewing367+57
Oct 21, 2026310+166
Oct 16, 2026144+5
Oct 15, 2026139+2
Oct 14, 20261370
Oct 13, 2026137+4
Oct 09, 2026133No prior observation