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Contract OI history

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Nov 20, 2026 EXPIRATION

MSFT $515.00 Put

MSFT261120P00515000

Latest saved OI2,536Oct 23, 2026
Last change-13vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $515.00 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. 2,5491,2740 2026-10-09: 1,534 OI2026-10-13: 1,982 OI2026-10-14: 1,982 OI2026-10-15: 2,042 OI2026-10-16: 2,078 OI2026-10-21: 2,549 OI2026-10-23: 2,536 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, 2026Viewing2,536-13
Oct 21, 20262,549+471
Oct 16, 20262,078+36
Oct 15, 20262,042+60
Oct 14, 20261,9820
Oct 13, 20261,982+448
Oct 09, 20261,534No prior observation