OITracker Cboe delayed data

Contract OI history

Back to SOFI

Oct 30, 2026 EXPIRATION

SOFI $18.00 Put

SOFI261030P00018000

Latest saved OI1,560Oct 23, 2026
Last change-78vs 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. 1,8119050 2026-10-09: 1,584 OI2026-10-13: 1,727 OI2026-10-14: 1,727 OI2026-10-15: 1,811 OI2026-10-16: 1,777 OI2026-10-21: 1,638 OI2026-10-23: 1,560 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, 2026Viewing1,560-78
Oct 21, 20261,638-139
Oct 16, 20261,777-34
Oct 15, 20261,811+84
Oct 14, 20261,7270
Oct 13, 20261,727+143
Oct 09, 20261,584No prior observation