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Contract OI history

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Dec 18, 2026 EXPIRATION

FSK $12.50 Put

FSK261218P00012500

Latest saved OI821Oct 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 $12.50 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. 8504250 2026-10-01: 850 OI2026-10-05: 850 OI2026-10-06: 850 OI2026-10-07: 850 OI2026-10-08: 850 OI2026-10-09: 849 OI2026-10-13: 839 OI2026-10-14: 839 OI2026-10-16: 839 OI2026-10-21: 821 OI2026-10-23: 821 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, 2026Viewing8210
Oct 21, 2026821-18
Oct 16, 20268390
Oct 14, 20268390
Oct 13, 2026839-10
Oct 09, 2026849-1
Oct 08, 20268500
Oct 07, 20268500
Oct 06, 20268500
Oct 05, 20268500
Oct 01, 2026850No prior observation