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Contract OI history

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Nov 20, 2026 EXPIRATION

FN $400.00 Put

FN261120P00400000

Latest saved OI503Oct 23, 2026
Last change-3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
FN $400.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5242620 2026-10-02: 439 OI2026-10-05: 370 OI2026-10-06: 383 OI2026-10-07: 308 OI2026-10-08: 311 OI2026-10-09: 313 OI2026-10-13: 320 OI2026-10-14: 462 OI2026-10-15: 464 OI2026-10-16: 524 OI2026-10-21: 506 OI2026-10-23: 503 OI Oct 02, 2026Oct 23, 2026

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

FN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing503-3
Oct 21, 2026506-18
Oct 16, 2026524+60
Oct 15, 2026464+2
Oct 14, 2026462+142
Oct 13, 2026320+7
Oct 09, 2026313+2
Oct 08, 2026311+3
Oct 07, 2026308-75
Oct 06, 2026383+13
Oct 05, 2026370-69
Oct 02, 2026439No prior observation