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Contract OI history

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Jan 21, 2028 EXPIRATION

FSK $10.00 Put

FSK280121P00010000

Latest saved OI1,923Oct 23, 2026
Last change+1vs 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. 1,9239610 2026-10-01: 1,649 OI2026-10-05: 1,649 OI2026-10-06: 1,649 OI2026-10-07: 1,649 OI2026-10-08: 1,649 OI2026-10-09: 1,774 OI2026-10-13: 1,796 OI2026-10-14: 1,846 OI2026-10-16: 1,847 OI2026-10-21: 1,922 OI2026-10-23: 1,923 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, 20261,923+1
Oct 21, 2026Viewing1,922+75
Oct 16, 20261,847+1
Oct 14, 20261,846+50
Oct 13, 20261,796+22
Oct 09, 20261,774+125
Oct 08, 20261,6490
Oct 07, 20261,6490
Oct 06, 20261,6490
Oct 05, 20261,6490
Oct 01, 20261,649No prior observation