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Contract OI history

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Dec 18, 2026 EXPIRATION

SOFI $9.00 Put

SOFI261218P00009000

Latest saved OI1,133Oct 23, 2026
Last change-2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SOFI $9.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 1,1355670 2026-10-09: 1,055 OI2026-10-13: 1,052 OI2026-10-14: 1,052 OI2026-10-15: 1,044 OI2026-10-16: 1,102 OI2026-10-21: 1,135 OI2026-10-23: 1,133 OI Oct 09, 2026Oct 23, 2026

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

SOFI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,133-2
Oct 21, 20261,135+33
Oct 16, 20261,102+58
Oct 15, 20261,044-8
Oct 14, 20261,0520
Oct 13, 20261,052-3
Oct 09, 20261,055No prior observation