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Contract OI history

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Dec 18, 2026 EXPIRATION

MSFT $485.00 Put

MSFT261218P00485000

Latest saved OI2,827Oct 23, 2026
Last change+102vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $485.00 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. 2,8271,4130 2026-10-09: 1,252 OI2026-10-13: 1,253 OI2026-10-14: 1,253 OI2026-10-15: 1,886 OI2026-10-16: 2,488 OI2026-10-21: 2,725 OI2026-10-23: 2,827 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, 2026Viewing2,827+102
Oct 21, 20262,725+237
Oct 16, 20262,488+602
Oct 15, 20261,886+633
Oct 14, 20261,2530
Oct 13, 20261,253+1
Oct 09, 20261,252No prior observation