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Contract OI history

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Dec 18, 2026 EXPIRATION

FSK $17.50 Call

FSK261218C00017500

Latest saved OI5,523Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 01, 2026 onwards
Daily open interest Hover a point for its date and OI
FSK $17.50 call open interest history 11 saved observations from 2026-10-01 to 2026-10-23. Exact values and changes are listed in the table below. 5,5672,7830 2026-10-01: 5,567 OI2026-10-05: 5,567 OI2026-10-06: 5,567 OI2026-10-07: 5,567 OI2026-10-08: 5,536 OI2026-10-09: 5,536 OI2026-10-13: 5,536 OI2026-10-14: 5,523 OI2026-10-16: 5,523 OI2026-10-21: 5,523 OI2026-10-23: 5,523 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, 20265,5230
Oct 21, 2026Viewing5,5230
Oct 16, 20265,5230
Oct 14, 20265,523-13
Oct 13, 20265,5360
Oct 09, 20265,5360
Oct 08, 20265,536-31
Oct 07, 20265,5670
Oct 06, 20265,5670
Oct 05, 20265,5670
Oct 01, 20265,567No prior observation