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Contract OI history

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Jan 21, 2028 EXPIRATION

MSFT $515.00 Put

MSFT280121P00515000

Latest saved OI270Oct 23, 2026
Last change+1vs 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. 2701350 2026-10-09: 237 OI2026-10-13: 236 OI2026-10-14: 236 OI2026-10-15: 267 OI2026-10-16: 268 OI2026-10-21: 269 OI2026-10-23: 270 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, 2026Viewing270+1
Oct 21, 2026269+1
Oct 16, 2026268+1
Oct 15, 2026267+31
Oct 14, 20262360
Oct 13, 2026236-1
Oct 09, 2026237No prior observation