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Contract OI history

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Dec 18, 2026 EXPIRATION

FER $50.00 Put

FER261218P00050000

Latest saved OI19Oct 20, 2026
Last change+4vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
FER $50.00 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. 1990 2026-10-08: 15 OI2026-10-09: 15 OI2026-10-13: 15 OI2026-10-14: 15 OI2026-10-16: 15 OI2026-10-20: 19 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, 2026Viewing19+4
Oct 16, 2026150
Oct 14, 2026150
Oct 13, 2026150
Oct 09, 2026150
Oct 08, 202615No prior observation