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Contract OI history

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Jan 21, 2028 EXPIRATION

MSFT $520.00 Put

MSFT280121P00520000

Latest saved OI732Oct 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 $520.00 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. 7383690 2026-10-09: 736 OI2026-10-13: 735 OI2026-10-14: 735 OI2026-10-15: 738 OI2026-10-16: 737 OI2026-10-21: 732 OI2026-10-23: 732 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, 2026Viewing7320
Oct 21, 2026732-5
Oct 16, 2026737-1
Oct 15, 2026738+3
Oct 14, 20267350
Oct 13, 2026735-1
Oct 09, 2026736No prior observation