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Contract OI history

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Jan 21, 2028 EXPIRATION

DOW $40.00 Put

DOW280121P00040000

Latest saved OI548Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
DOW $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. 5482740 2026-10-02: 538 OI2026-10-05: 538 OI2026-10-06: 538 OI2026-10-07: 538 OI2026-10-08: 538 OI2026-10-09: 538 OI2026-10-13: 538 OI2026-10-14: 548 OI2026-10-15: 548 OI2026-10-16: 548 OI2026-10-21: 548 OI2026-10-23: 548 OI Oct 02, 2026Oct 23, 2026

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

DOW contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5480
Oct 21, 20265480
Oct 16, 20265480
Oct 15, 20265480
Oct 14, 2026548+10
Oct 13, 20265380
Oct 09, 20265380
Oct 08, 20265380
Oct 07, 20265380
Oct 06, 20265380
Oct 05, 20265380
Oct 02, 2026538No prior observation