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Contract OI history

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Nov 20, 2026 EXPIRATION

FSK $12.50 Put

FSK261120P00012500

Latest saved OI344Oct 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. 3441720 2026-10-01: 5 OI2026-10-05: 5 OI2026-10-06: 5 OI2026-10-07: 5 OI2026-10-08: 24 OI2026-10-09: 84 OI2026-10-13: 84 OI2026-10-14: 89 OI2026-10-16: 249 OI2026-10-21: 344 OI2026-10-23: 344 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, 2026Viewing3440
Oct 21, 2026344+95
Oct 16, 2026249+160
Oct 14, 202689+5
Oct 13, 2026840
Oct 09, 202684+60
Oct 08, 202624+19
Oct 07, 202650
Oct 06, 202650
Oct 05, 202650
Oct 01, 20265No prior observation