OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

MSFT $300.00 Put

MSFT270115P00300000

Latest saved OI12,277Oct 23, 2026
Last change-49vs 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. 12,3786,1890 2026-10-09: 12,378 OI2026-10-13: 12,312 OI2026-10-14: 12,312 OI2026-10-15: 12,309 OI2026-10-16: 12,302 OI2026-10-21: 12,326 OI2026-10-23: 12,277 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, 2026Viewing12,277-49
Oct 21, 202612,326+24
Oct 16, 202612,302-7
Oct 15, 202612,309-3
Oct 14, 202612,3120
Oct 13, 202612,312-66
Oct 09, 202612,378No prior observation