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Contract OI history

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Jun 16, 2028 EXPIRATION

MSFT $540.00 Put

MSFT280616P00540000

Latest saved OI538Oct 23, 2026
Last change+18vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $540.00 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. 5382690 2026-10-09: 519 OI2026-10-13: 521 OI2026-10-14: 521 OI2026-10-15: 521 OI2026-10-16: 522 OI2026-10-21: 520 OI2026-10-23: 538 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, 2026Viewing538+18
Oct 21, 2026520-2
Oct 16, 2026522+1
Oct 15, 20265210
Oct 14, 20265210
Oct 13, 2026521+2
Oct 09, 2026519No prior observation