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Contract OI history

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Jan 21, 2028 EXPIRATION

D $40.00 Put

D280121P00040000

Latest saved OI77Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
D $40.00 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. 82410 2026-10-02: 75 OI2026-10-05: 75 OI2026-10-06: 79 OI2026-10-07: 79 OI2026-10-08: 79 OI2026-10-09: 79 OI2026-10-13: 82 OI2026-10-14: 82 OI2026-10-15: 82 OI2026-10-16: 79 OI2026-10-21: 77 OI2026-10-23: 77 OI Oct 02, 2026Oct 23, 2026

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

D contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing770
Oct 21, 202677-2
Oct 16, 202679-3
Oct 15, 2026820
Oct 14, 2026820
Oct 13, 202682+3
Oct 09, 2026790
Oct 08, 2026790
Oct 07, 2026790
Oct 06, 202679+4
Oct 05, 2026750
Oct 02, 202675No prior observation