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Contract OI history

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Dec 18, 2026 EXPIRATION

FOUR $35.00 Put

FOUR261218P00035000

Latest saved OI505Oct 23, 2026
Last change+4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
FOUR $35.00 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. 5052520 2026-10-02: 414 OI2026-10-05: 425 OI2026-10-06: 439 OI2026-10-07: 443 OI2026-10-08: 443 OI2026-10-09: 444 OI2026-10-13: 442 OI2026-10-14: 442 OI2026-10-15: 445 OI2026-10-16: 445 OI2026-10-21: 501 OI2026-10-23: 505 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, 2026Viewing505+4
Oct 21, 2026501+56
Oct 16, 20264450
Oct 15, 2026445+3
Oct 14, 20264420
Oct 13, 2026442-2
Oct 09, 2026444+1
Oct 08, 20264430
Oct 07, 2026443+4
Oct 06, 2026439+14
Oct 05, 2026425+11
Oct 02, 2026414No prior observation