Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
700 institutional managers reported holding FFIV for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 53%. 117 opened new positions; 78 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 7.23M | 12.62% | $2.09B | trimmed -1.9% | ≤2013 |
| BlackRock | 6.23M | 10.88% | $1.80B | trimmed -0.7% | ≤2013 |
| Hotchkis & Wiley Capital Management LLC | 4.58M | 7.99% | $1.33B | trimmed -16.3% | 2020 Q4 |
| State Street | 2.98M | 5.20% | $862.1M | trimmed -4% | ≤2013 |
| Jericho Capital Asset Management L.p. (focused) | 2.64M | 4.61% | $764.8M | added +16.4% | 2025 Q4 |
| Geode Capital | 1.74M | 3.04% | $504.2M | added +1.6% | ≤2013 |
| First Trust Advisors LP | 1.48M | 2.58% | $427.4M | trimmed -46.4% | ≤2013 |
| Invesco | 1.44M | 2.52% | $418.1M | trimmed -6% | ≤2013 |
| UBS | 1.16M | 2.02% | $334.4M | trimmed -30.4% | ≤2013 |
| Victory Capital Management INC | 1.02M | 1.78% | $295.6M | added +116% | 2015 Q1 |
| Lyrical Asset Management LP (focused) | 947.4k | 1.65% | $274.1M | trimmed -4% | 2023 Q2 |
| Morgan Stanley | 855.9k | 1.49% | $247.7M | added +1.8% | ≤2013 |
| AllianceBernstein | 828.3k | 1.45% | $239.7M | added +300.9% | ≤2013 |
| Wellington Management | 817.7k | 1.43% | $236.6M | trimmed -2.5% | ≤2013 |
| American Century Companies INC | 784.8k | 1.37% | $227.1M | added +14.7% | 2019 Q4 |
| Ameriprise Financial INC | 781.5k | 1.36% | $226.2M | added +301.6% | ≤2013 |
| Northern Trust | 735.8k | 1.28% | $212.9M | trimmed -22.4% | ≤2013 |
| AQR Capital | 682.4k | 1.19% | $197.5M | added +8.4% | ≤2013 |
| William Blair Investment Management, LLC | 649.9k | 1.13% | $188.1M | added +18.1% | 2025 Q4 |
| Dimensional Fund Advisors | 603.1k | 1.05% | $174.5M | added +0.7% | ≤2013 |
| Hsbc Holdings PLC | 579.7k | 1.01% | $167.7M | unchanged | ≤2013 |
| Charles Schwab Investment Management | 509.1k | 0.89% | $147.3M | added +1.2% | ≤2013 |
| BNP Paribas Financial Markets | 508.4k | 0.89% | $147.1M | added +120.9% | ≤2013 |
| Legal & General Group PLC | 490.5k | 0.86% | $141.9M | added +2% | ≤2013 |
| Point72 | 482.3k | 0.84% | $139.6M | added +34.2% | 2025 Q4 |
| Voya Investment Management LLC | 423.3k | 0.74% | $122.5M | trimmed -4.8% | ≤2013 |
| Deutsche Bank AG\ | 405.6k | 0.71% | $117.4M | trimmed -57.7% | 2013 Q3 |
| BNY Mellon | 385.9k | 0.67% | $111.7M | trimmed -6.7% | ≤2013 |
| Junto Capital Management LP | 354.2k | 0.62% | $102.5M | added +33.1% | 2025 Q4 |
| Robeco Institutional Asset Management B.v. | 331.7k | 0.58% | $96.0M | added +20.3% | 2016 Q3 |
| Penserra Capital Management LLC | 324.9k | 0.57% | $94.0M | trimmed -18.2% | 2015 Q4 |
| Alyeska Investment Group | 310.5k | 0.54% | $89.9M | trimmed -20.8% | 2024 Q2 |
| Citadel Advisors | 307.0k | 0.54% | $88.8M | trimmed -29.7% | 2019 Q1 |
| Westfield Capital Management CO LP | 298.5k | 0.52% | $86.4M | added +6.1% | 2020 Q3 |
| Amundi | 283.5k | 0.49% | $82.0M | trimmed -44.2% | 2017 Q4 |
| Freestone Grove Partners LP | 283.5k | 0.49% | $82.0M | opened | 2026 Q1 |
| SEI Investments CO | 256.4k | 0.45% | $74.2M | added +30.7% | ≤2013 |
| Goldman Sachs | 254.5k | 0.44% | $73.6M | trimmed -21.5% | ≤2013 |
| Quantinno Capital Management LP | 242.9k | 0.42% | $70.3M | added +127.3% | 2019 Q2 |
| Bank OF America CORP /DE/ | 240.2k | 0.42% | $69.5M | trimmed -12.8% | ≤2013 |
| Caisse de depot et placement du Quebec | 235.8k | 0.41% | $68.2M | trimmed -6.9% | ≤2013 |
| Swedbank Robur | 214.0k | 0.37% | $61.9M | added +3.3% | 2021 Q1 |
| Mitsubishi UFJ Asset Management CO., LTD. | 192.6k | 0.34% | $55.7M | added +6.1% | ≤2013 |
| Citigroup INC | 188.8k | 0.33% | $54.6M | added +138.1% | ≤2013 |
| Allianz Asset Management GmbH | 182.4k | 0.32% | $52.8M | trimmed -49.9% | 2023 Q1 |
| FMR (Fidelity) | 179.7k | 0.31% | $52.0M | added +12.2% | ≤2013 |
| Boston Trust Walden CORP | 177.3k | 0.31% | $51.3M | trimmed -2.7% | ≤2013 |
| Bank OF Montreal /CAN/ | 174.1k | 0.30% | $50.4M | trimmed -42.5% | ≤2013 |
| Swiss National Bank | 170.5k | 0.30% | $49.3M | added +8.3% | ≤2013 |
| Panagora Asset Management INC | 165.5k | 0.29% | $47.9M | added +9.9% | 2023 Q4 |
Largest 50 of 700 shown; the full ranked, searchable register is at boothcheck.com/holders/FFIV. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.