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Contract OI history

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Jan 21, 2028 EXPIRATION

DOW $27.50 Put

DOW280121P00027500

Latest saved OI5,324Oct 23, 2026
Last change-21vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
DOW $27.50 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. 5,3522,6760 2026-10-02: 5,316 OI2026-10-05: 5,352 OI2026-10-06: 5,352 OI2026-10-07: 5,352 OI2026-10-08: 5,352 OI2026-10-09: 5,352 OI2026-10-13: 5,352 OI2026-10-14: 5,352 OI2026-10-15: 5,348 OI2026-10-16: 5,348 OI2026-10-21: 5,345 OI2026-10-23: 5,324 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, 2026Viewing5,324-21
Oct 21, 20265,345-3
Oct 16, 20265,3480
Oct 15, 20265,348-4
Oct 14, 20265,3520
Oct 13, 20265,3520
Oct 09, 20265,3520
Oct 08, 20265,3520
Oct 07, 20265,3520
Oct 06, 20265,3520
Oct 05, 20265,352+36
Oct 02, 20265,316No prior observation