OITracker Cboe delayed data

Contract OI history

Back to MSFT

Nov 20, 2026 EXPIRATION

MSFT $500.00 Put

MSFT261120P00500000

Latest saved OI11,298Oct 23, 2026
Last change-264vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $500.00 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. 11,5625,7810 2026-10-09: 7,971 OI2026-10-13: 8,892 OI2026-10-14: 8,892 OI2026-10-15: 10,839 OI2026-10-16: 10,952 OI2026-10-21: 11,562 OI2026-10-23: 11,298 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, 2026Viewing11,298-264
Oct 21, 202611,562+610
Oct 16, 202610,952+113
Oct 15, 202610,839+1,947
Oct 14, 20268,8920
Oct 13, 20268,892+921
Oct 09, 20267,971No prior observation