OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

MSFT $300.00 Put

MSFT270319P00300000

Latest saved OI4,465Oct 23, 2026
Last change-68vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $300.00 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. 4,5502,2750 2026-10-09: 4,539 OI2026-10-13: 4,549 OI2026-10-14: 4,549 OI2026-10-15: 4,550 OI2026-10-16: 4,532 OI2026-10-21: 4,533 OI2026-10-23: 4,465 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, 2026Viewing4,465-68
Oct 21, 20264,533+1
Oct 16, 20264,532-18
Oct 15, 20264,550+1
Oct 14, 20264,5490
Oct 13, 20264,549+10
Oct 09, 20264,539No prior observation