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Contract OI history

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Dec 18, 2026 EXPIRATION

FFIV $320.00 Put

FFIV261218P00320000

Latest saved OI158Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
FFIV $320.00 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. 158790 2026-10-09: 157 OI2026-10-13: 157 OI2026-10-14: 157 OI2026-10-15: 157 OI2026-10-16: 157 OI2026-10-21: 158 OI2026-10-23: 158 OI Oct 09, 2026Oct 23, 2026

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

FFIV contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1580
Oct 21, 2026158+1
Oct 16, 20261570
Oct 15, 20261570
Oct 14, 20261570
Oct 13, 20261570
Oct 09, 2026157No prior observation