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Contract OI history

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Oct 26, 2026 EXPIRATION

MSFT $522.50 Put

MSFT261026P00522500

Latest saved OI919Oct 23, 2026
Last change+849vs previous saved observation
Saved market days6Oct 13, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $522.50 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. 9194590 2026-10-13: 15 OI2026-10-14: 15 OI2026-10-15: 20 OI2026-10-16: 19 OI2026-10-21: 70 OI2026-10-23: 919 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, 2026Viewing919+849
Oct 21, 202670+51
Oct 16, 202619-1
Oct 15, 202620+5
Oct 14, 2026150
Oct 13, 202615No prior observation