OITracker Cboe delayed data

Contract OI history

Back to FN

Dec 18, 2026 EXPIRATION

FN $640.00 Put

FN261218P00640000

Latest saved OI0Oct 23, 2026
Last change-8vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
FN $640.00 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. 1570 2026-10-02: 15 OI2026-10-05: 15 OI2026-10-06: 15 OI2026-10-07: 15 OI2026-10-08: 15 OI2026-10-09: 15 OI2026-10-13: 15 OI2026-10-14: 15 OI2026-10-15: 15 OI2026-10-16: 15 OI2026-10-21: 8 OI2026-10-23: 0 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, 2026Viewing0-8
Oct 21, 20268-7
Oct 16, 2026150
Oct 15, 2026150
Oct 14, 2026150
Oct 13, 2026150
Oct 09, 2026150
Oct 08, 2026150
Oct 07, 2026150
Oct 06, 2026150
Oct 05, 2026150
Oct 02, 202615No prior observation