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Contract OI history

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Mar 19, 2027 EXPIRATION

MCK $940.00 Put

MCK270319P00940000

Latest saved OI641Oct 23, 2026
Last change+4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MCK $940.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 6413200 2026-10-02: 574 OI2026-10-05: 574 OI2026-10-06: 575 OI2026-10-07: 575 OI2026-10-08: 576 OI2026-10-09: 576 OI2026-10-13: 576 OI2026-10-14: 576 OI2026-10-15: 577 OI2026-10-16: 631 OI2026-10-21: 637 OI2026-10-23: 641 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

MCK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026641+4
Oct 21, 2026Viewing637+6
Oct 16, 2026631+54
Oct 15, 2026577+1
Oct 14, 20265760
Oct 13, 20265760
Oct 09, 20265760
Oct 08, 2026576+1
Oct 07, 20265750
Oct 06, 2026575+1
Oct 05, 20265740
Oct 02, 2026574No prior observation