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Contract OI history

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Dec 18, 2026 EXPIRATION

MSFT $510.00 Put

MSFT261218P00510000

Latest saved OI2,521Oct 23, 2026
Last change0vs 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. 2,5321,2660 2026-10-09: 2,481 OI2026-10-13: 2,526 OI2026-10-14: 2,526 OI2026-10-15: 2,532 OI2026-10-16: 2,495 OI2026-10-21: 2,521 OI2026-10-23: 2,521 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, 2026Viewing2,5210
Oct 21, 20262,521+26
Oct 16, 20262,495-37
Oct 15, 20262,532+6
Oct 14, 20262,5260
Oct 13, 20262,526+45
Oct 09, 20262,481No prior observation