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Contract OI history

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Dec 15, 2028 EXPIRATION

MSFT $230.00 Put

MSFT281215P00230000

Latest saved OI1,705Oct 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 $230.00 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. 1,7728860 2026-10-09: 1,772 OI2026-10-13: 1,703 OI2026-10-14: 1,703 OI2026-10-15: 1,703 OI2026-10-16: 1,703 OI2026-10-21: 1,705 OI2026-10-23: 1,705 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, 2026Viewing1,7050
Oct 21, 20261,705+2
Oct 16, 20261,7030
Oct 15, 20261,7030
Oct 14, 20261,7030
Oct 13, 20261,703-69
Oct 09, 20261,772No prior observation