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Contract OI history

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Dec 18, 2026 EXPIRATION

FER $55.00 Put

FER261218P00055000

Latest saved OI12Oct 20, 2026
Last change0vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
FER $55.00 put open interest history 6 saved observations from 2026-10-08 to 2026-10-20. Exact values and changes are listed in the table below. 1260 2026-10-08: 11 OI2026-10-09: 11 OI2026-10-13: 12 OI2026-10-14: 12 OI2026-10-16: 12 OI2026-10-20: 12 OI Oct 08, 2026Oct 20, 2026

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

FER contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing120
Oct 16, 2026120
Oct 14, 2026120
Oct 13, 202612+1
Oct 09, 2026110
Oct 08, 202611No prior observation