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Contract OI history

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Oct 26, 2026 EXPIRATION

MSFT $535.00 Put

MSFT261026P00535000

Latest saved OI219Oct 23, 2026
Last change-26vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $535.00 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. 2451220 2026-10-09: 0 OI2026-10-13: 167 OI2026-10-14: 167 OI2026-10-15: 107 OI2026-10-16: 123 OI2026-10-21: 245 OI2026-10-23: 219 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, 2026Viewing219-26
Oct 21, 2026245+122
Oct 16, 2026123+16
Oct 15, 2026107-60
Oct 14, 20261670
Oct 13, 2026167+167
Oct 09, 20260No prior observation