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Contract OI history

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Dec 15, 2028 EXPIRATION

SOFI $18.00 Put

SOFI281215P00018000

Latest saved OI1,489Oct 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 $18.00 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. 1,4897440 2026-10-09: 1,477 OI2026-10-13: 1,466 OI2026-10-14: 1,466 OI2026-10-15: 1,458 OI2026-10-16: 1,458 OI2026-10-21: 1,487 OI2026-10-23: 1,489 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, 2026Viewing1,489+2
Oct 21, 20261,487+29
Oct 16, 20261,4580
Oct 15, 20261,458-8
Oct 14, 20261,4660
Oct 13, 20261,466-11
Oct 09, 20261,477No prior observation