Investigate / reported ownership
FFIV
F5 Inc
4 tracked reported owners · snapshot updated 2026-10-04. Delayed disclosures, not live holdings or an investment recommendation.
Who reports owning FFIV?
Select a manager to inspect their portfolio. Reports may cover different quarters; portfolio weights describe disclosed long 13F holdings, not total economic exposure.
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | Joel Greenblatt | <0.1% | 37q | $44M | 105,668 |
| 2 | Stanley Druckenmiller | 0.2% | — 1q | $9M | 22,000 |
| 3 | Jensen Investment Management | 0.1% | 27q | $3M | 7,470 |
| 4 | Lee Ainslie | <0.1% | 15q | $653K | 1,570 |
Go beyond ownership.
F5 provides multicloud application delivery and security, helping organizations optimize and secure applications and APIs on-premises, in the cloud and at the network edge.
Question to investigate: Can F5 keep customers adopting its broad platform while managing the reported consequences of its Cyber Incident?
Company research reviewed 2026-10-02; a dated source-linked starting point, not the investors’ stated reasons.
Understand the business and investment case →Filing dates and original SEC sources
Reported position changes
Net disclosed share changes—not individual trades or execution dates. NEW has no prior-position percentage comparison; EXIT weight refers to the previous report.
| Manager | Move | % Port. | Δ Shares | Value | Filed |
|---|---|---|---|---|---|
| Stanley Druckenmiller | NEW | 0.2% | New position | $9M | Aug 14, 2026 |
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Long US 13F disclosures omit shorts and can be amended. CUSIP 315616102. No current price, valuation or manager motive is inferred.