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Contract OI history

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Oct 23, 2026 EXPIRATION

MSFT $497.50 Put

MSFT261023P00497500

Latest saved OI620Oct 23, 2026
Last change+16vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $497.50 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. 6203100 2026-10-09: 285 OI2026-10-13: 357 OI2026-10-14: 357 OI2026-10-15: 462 OI2026-10-16: 576 OI2026-10-21: 604 OI2026-10-23: 620 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, 2026Viewing620+16
Oct 21, 2026604+28
Oct 16, 2026576+114
Oct 15, 2026462+105
Oct 14, 20263570
Oct 13, 2026357+72
Oct 09, 2026285No prior observation