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Contract OI history

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Jan 21, 2028 EXPIRATION

FOUR $30.00 Put

FOUR280121P00030000

Latest saved OI1,121Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
FOUR $30.00 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. 1,1215600 2026-10-02: 952 OI2026-10-05: 953 OI2026-10-06: 968 OI2026-10-07: 968 OI2026-10-08: 968 OI2026-10-09: 968 OI2026-10-13: 968 OI2026-10-14: 968 OI2026-10-15: 1,048 OI2026-10-16: 1,095 OI2026-10-21: 1,121 OI2026-10-23: 1,121 OI Oct 02, 2026Oct 23, 2026

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

FOUR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,1210
Oct 21, 20261,121+26
Oct 16, 20261,095+47
Oct 15, 20261,048+80
Oct 14, 20269680
Oct 13, 20269680
Oct 09, 20269680
Oct 08, 20269680
Oct 07, 20269680
Oct 06, 2026968+15
Oct 05, 2026953+1
Oct 02, 2026952No prior observation