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Contract OI history

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Dec 18, 2026 EXPIRATION

FTNT $155.00 Put

FTNT261218P00155000

Latest saved OI529Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
FTNT $155.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 5292640 2026-10-09: 518 OI2026-10-13: 521 OI2026-10-14: 521 OI2026-10-15: 522 OI2026-10-16: 524 OI2026-10-21: 528 OI2026-10-23: 529 OI Oct 09, 2026Oct 23, 2026

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

FTNT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing529+1
Oct 21, 2026528+4
Oct 16, 2026524+2
Oct 15, 2026522+1
Oct 14, 20265210
Oct 13, 2026521+3
Oct 09, 2026518No prior observation