OITracker Cboe delayed data

Contract OI history

Back to SOFI

Oct 23, 2026 EXPIRATION

SOFI $18.50 Put

SOFI261023P00018500

Latest saved OI1Oct 23, 2026
Last change-82vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SOFI $18.50 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. 2931460 2026-10-09: 293 OI2026-10-13: 291 OI2026-10-14: 291 OI2026-10-15: 207 OI2026-10-16: 83 OI2026-10-21: 83 OI2026-10-23: 1 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, 2026Viewing1-82
Oct 21, 2026830
Oct 16, 202683-124
Oct 15, 2026207-84
Oct 14, 20262910
Oct 13, 2026291-2
Oct 09, 2026293No prior observation