OITracker Cboe delayed data

Contract OI history

Back to FSK

Dec 18, 2026 EXPIRATION

FSK $10.00 Put

FSK261218P00010000

Latest saved OI3,011Oct 23, 2026
Last change-5vs previous saved observation
Saved market days11Oct 01, 2026 onwards
Daily open interest Hover a point for its date and OI
FSK $10.00 put open interest history 11 saved observations from 2026-10-01 to 2026-10-23. Exact values and changes are listed in the table below. 3,0161,5080 2026-10-01: 2,898 OI2026-10-05: 2,898 OI2026-10-06: 2,898 OI2026-10-07: 2,898 OI2026-10-08: 2,896 OI2026-10-09: 2,896 OI2026-10-13: 2,896 OI2026-10-14: 2,996 OI2026-10-16: 2,997 OI2026-10-21: 3,016 OI2026-10-23: 3,011 OI Oct 01, 2026Oct 23, 2026

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

FSK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3,011-5
Oct 21, 20263,016+19
Oct 16, 20262,997+1
Oct 14, 20262,996+100
Oct 13, 20262,8960
Oct 09, 20262,8960
Oct 08, 20262,896-2
Oct 07, 20262,8980
Oct 06, 20262,8980
Oct 05, 20262,8980
Oct 01, 20262,898No prior observation