Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
266 institutional managers reported holding ARLO for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 55%. 37 opened new positions; 29 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 17.04M | 15.43% | $242.6M | added +1.4% | 2018 Q3 |
| Vanguard Group | 10.75M | 9.73% | $153.0M | added +0.5% | 2018 Q3 |
| Brandes Investment Partners, LP | 10.22M | 9.25% | $145.5M | added +24.6% | 2019 Q1 |
| Wasatch Advisors LP | 5.43M | 4.91% | $77.2M | added +1.9% | 2024 Q2 |
| State Street | 4.32M | 3.91% | $61.5M | added +2.5% | 2018 Q3 |
| Rice Hall James & Associates, LLC | 3.66M | 3.31% | $52.1M | added +2.3% | 2021 Q4 |
| Geode Capital | 2.48M | 2.24% | $35.3M | added +3.6% | 2018 Q3 |
| PRIMECAP Management | 2.32M | 2.10% | $33.0M | trimmed -16.6% | 2018 Q3 |
| Renaissance Technologies | 2.05M | 1.85% | $29.2M | trimmed -10.5% | 2019 Q2 |
| Emerald Advisers, LLC | 2.02M | 1.83% | $28.7M | trimmed -2% | 2024 Q2 |
| D. E. Shaw | 1.80M | 1.63% | $25.6M | added +2.5% | 2019 Q1 |
| Arrowstreet Capital | 1.76M | 1.59% | $25.1M | trimmed -0.7% | 2025 Q1 |
| Needham Investment Management LLC | 1.76M | 1.59% | $25.1M | added +14.3% | 2020 Q2 |
| Janus Henderson | 1.62M | 1.46% | $23.0M | added +74% | 2022 Q2 |
| Nuveen | 1.48M | 1.34% | $21.1M | added +40.4% | 2019 Q2 |
| Herald Investment Management LTD | 1.38M | 1.25% | $19.6M | added +5.4% | 2021 Q2 |
| Northern Trust | 1.29M | 1.17% | $18.4M | unchanged | 2018 Q3 |
| AWM Investment Company, INC. | 1.27M | 1.15% | $18.0M | added +7.9% | 2024 Q3 |
| Emerald Mutual Fund Advisers Trust | 1.26M | 1.14% | $17.9M | added +1.5% | 2024 Q2 |
| Morgan Stanley | 1.23M | 1.11% | $17.5M | trimmed -8.9% | 2018 Q3 |
| Granahan Investment Management, LLC | 1.17M | 1.06% | $16.6M | added +245.6% | 2025 Q3 |
| Hosking Partners LLP | 1.16M | 1.05% | $16.5M | added +80.2% | 2025 Q1 |
| Royce & Associates | 1.08M | 0.98% | $15.4M | added +9.4% | 2021 Q4 |
| Connor, Clark & Lunn Investment Management LTD. | 1.06M | 0.96% | $15.1M | trimmed -12.4% | 2023 Q1 |
| Charles Schwab Investment Management | 1.03M | 0.94% | $14.7M | unchanged | 2018 Q3 |
| Oberweis Asset Management INC/ | 982.3k | 0.89% | $14.0M | opened | 2026 Q1 |
| Swedbank Robur | 950.0k | 0.86% | $13.5M | trimmed -20.8% | 2023 Q1 |
| UBS | 862.2k | 0.78% | $12.3M | added +14.9% | 2018 Q3 |
| Goldman Sachs | 814.3k | 0.74% | $11.6M | added +32.8% | 2018 Q3 |
| Qube Research & Technologies LTD | 784.1k | 0.71% | $11.2M | trimmed -9.4% | 2023 Q2 |
| Marshall Wace | 778.1k | 0.70% | $11.1M | trimmed -64.7% | 2023 Q4 |
| Jane Street | 705.2k | 0.64% | $10.0M | opened | 2020 Q1 |
| Granite Investment Partners, LLC | 650.9k | 0.59% | $9.3M | trimmed -5.1% | 2023 Q4 |
| AQR Capital | 634.5k | 0.57% | $9.0M | added +37.4% | 2019 Q1 |
| BNY Mellon | 605.6k | 0.55% | $8.6M | trimmed -1.6% | 2018 Q3 |
| Man Group | 598.8k | 0.54% | $8.5M | added +19.7% | 2025 Q1 |
| National Philanthropic Trust | 563.3k | 0.51% | $8.0M | unchanged | 2025 Q4 |
| Principal Financial Group INC | 517.9k | 0.47% | $7.4M | added +2.3% | 2018 Q3 |
| Clearbridge Investments, LLC | 517.1k | 0.47% | $7.4M | added +6.5% | 2025 Q4 |
| HRT Financial LP | 515.9k | 0.47% | $7.3M | added +114.5% | 2025 Q2 |
| Trexquant Investment LP | 509.1k | 0.46% | $7.2M | added +82.9% | 2023 Q2 |
| FMR (Fidelity) | 506.5k | 0.46% | $7.2M | trimmed -21% | 2018 Q3 |
| Invesco | 480.5k | 0.43% | $6.8M | added +6.1% | 2019 Q1 |
| S Squared Technology, LLC (focused) | 459.8k | 0.42% | $6.5M | trimmed -11.5% | 2025 Q1 |
| Citadel Advisors | 454.5k | 0.41% | $6.5M | trimmed -20.8% | 2024 Q4 |
| OP Asset Management LTD | 444.6k | 0.40% | $6.3M | added +426.1% | 2025 Q1 |
| Raymond James Financial INC | 440.8k | 0.40% | $6.3M | added +20.6% | 2023 Q2 |
| Squarepoint Ops LLC | 421.1k | 0.38% | $6.0M | trimmed -2.6% | 2021 Q4 |
| Driehaus Capital Management LLC | 407.2k | 0.37% | $5.8M | trimmed -79.1% | 2023 Q1 |
| Public Sector Pension Investment Board | 379.2k | 0.34% | $5.4M | added +3.3% | 2019 Q1 |
Largest 50 of 266 shown; the full ranked, searchable register is at boothcheck.com/holders/ARLO. 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.