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Contract OI history

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Oct 30, 2026 EXPIRATION

MSFT $485.00 Put

MSFT261030P00485000

Latest saved OI1,475Oct 23, 2026
Last change+73vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $485.00 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. 1,4757370 2026-10-09: 565 OI2026-10-13: 947 OI2026-10-14: 947 OI2026-10-15: 924 OI2026-10-16: 922 OI2026-10-21: 1,402 OI2026-10-23: 1,475 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, 2026Viewing1,475+73
Oct 21, 20261,402+480
Oct 16, 2026922-2
Oct 15, 2026924-23
Oct 14, 20269470
Oct 13, 2026947+382
Oct 09, 2026565No prior observation