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Contract OI history

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Jan 19, 2029 EXPIRATION

MSFT $310.00 Put

MSFT290119P00310000

Latest saved OI252Oct 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 $310.00 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. 2531260 2026-10-09: 253 OI2026-10-13: 252 OI2026-10-14: 252 OI2026-10-15: 252 OI2026-10-16: 252 OI2026-10-21: 252 OI2026-10-23: 252 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, 2026Viewing2520
Oct 21, 20262520
Oct 16, 20262520
Oct 15, 20262520
Oct 14, 20262520
Oct 13, 2026252-1
Oct 09, 2026253No prior observation