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Contract OI history

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Mar 19, 2027 EXPIRATION

BOX $20.00 Put

BOX270319P00020000

Latest saved OI9Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BOX $20.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1050 2026-10-02: 9 OI2026-10-05: 9 OI2026-10-06: 9 OI2026-10-07: 8 OI2026-10-08: 8 OI2026-10-13: 10 OI2026-10-14: 10 OI2026-10-15: 10 OI2026-10-16: 9 OI2026-10-20: 9 OI2026-10-23: 9 OI Oct 02, 2026Oct 23, 2026

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

BOX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing90
Oct 20, 202690
Oct 16, 20269-1
Oct 15, 2026100
Oct 14, 2026100
Oct 13, 202610+2
Oct 08, 202680
Oct 07, 20268-1
Oct 06, 202690
Oct 05, 202690
Oct 02, 20269No prior observation