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Contract OI history

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Oct 23, 2026 EXPIRATION

MSFT $515.00 Put

MSFT261023P00515000

Latest saved OI3,564Oct 23, 2026
Last change+721vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $515.00 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. 3,5641,7820 2026-10-09: 767 OI2026-10-13: 1,208 OI2026-10-14: 1,208 OI2026-10-15: 1,406 OI2026-10-16: 1,468 OI2026-10-21: 2,843 OI2026-10-23: 3,564 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, 2026Viewing3,564+721
Oct 21, 20262,843+1,375
Oct 16, 20261,468+62
Oct 15, 20261,406+198
Oct 14, 20261,2080
Oct 13, 20261,208+441
Oct 09, 2026767No prior observation