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Contract OI history

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Mar 19, 2027 EXPIRATION

MSFT $490.00 Put

MSFT270319P00490000

Latest saved OI3,637Oct 23, 2026
Last change-5vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $490.00 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. 3,6421,8210 2026-10-09: 2,469 OI2026-10-13: 3,398 OI2026-10-14: 3,398 OI2026-10-15: 3,575 OI2026-10-16: 3,584 OI2026-10-21: 3,642 OI2026-10-23: 3,637 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, 2026Viewing3,637-5
Oct 21, 20263,642+58
Oct 16, 20263,584+9
Oct 15, 20263,575+177
Oct 14, 20263,3980
Oct 13, 20263,398+929
Oct 09, 20262,469No prior observation