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Contract OI history

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Oct 26, 2026 EXPIRATION

MSFT $512.50 Put

MSFT261026P00512500

Latest saved OI1,260Oct 23, 2026
Last change+1,125vs previous saved observation
Saved market days6Oct 13, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $512.50 put open interest history 6 saved observations from 2026-10-13 to 2026-10-23. Exact values and changes are listed in the table below. 1,2606300 2026-10-13: 0 OI2026-10-14: 0 OI2026-10-15: 9 OI2026-10-16: 10 OI2026-10-21: 135 OI2026-10-23: 1,260 OI Oct 13, 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, 2026Viewing1,260+1,125
Oct 21, 2026135+125
Oct 16, 202610+1
Oct 15, 20269+9
Oct 14, 202600
Oct 13, 20260No prior observation