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Contract OI history

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Dec 15, 2028 EXPIRATION

MSFT $510.00 Put

MSFT281215P00510000

Latest saved OI1,218Oct 23, 2026
Last change+6vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $510.00 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. 1,2186090 2026-10-09: 1,211 OI2026-10-13: 1,211 OI2026-10-14: 1,211 OI2026-10-15: 1,212 OI2026-10-16: 1,212 OI2026-10-21: 1,212 OI2026-10-23: 1,218 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, 2026Viewing1,218+6
Oct 21, 20261,2120
Oct 16, 20261,2120
Oct 15, 20261,212+1
Oct 14, 20261,2110
Oct 13, 20261,2110
Oct 09, 20261,211No prior observation