Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
512 institutional managers reported holding LFUS for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 41%. 94 opened new positions; 43 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 2.89M | 11.38% | $981.6M | trimmed -2.7% | ≤2013 |
| BlackRock | 2.35M | 9.24% | $796.9M | added +2.7% | ≤2013 |
| VAN Lanschot Kempen Investment Management N.v. | 982.7k | 3.87% | $333.4M | unchanged | 2024 Q2 |
| State Street | 770.9k | 3.03% | $261.5M | added +1.4% | ≤2013 |
| Neuberger Berman Group LLC | 741.2k | 2.92% | $251.5M | trimmed -12.2% | ≤2013 |
| Mairs & Power INC | 724.7k | 2.85% | $245.9M | trimmed -7% | 2018 Q1 |
| T. Rowe Price Investment Management, INC. | 596.9k | 2.35% | $202.5M | added +303.3% | 2022 Q3 |
| Dimensional Fund Advisors | 502.8k | 1.98% | $170.6M | trimmed -2.6% | ≤2013 |
| Geode Capital | 490.4k | 1.93% | $166.4M | added +2.8% | ≤2013 |
| Wellington Management | 477.5k | 1.88% | $162.0M | added +5.8% | 2025 Q4 |
| Barrow Hanley Mewhinney & Strauss LLC | 457.2k | 1.80% | $155.1M | trimmed -55.4% | 2024 Q2 |
| Morgan Stanley | 427.0k | 1.68% | $144.9M | unchanged | ≤2013 |
| Earnest Partners LLC | 368.5k | 1.45% | $125.0M | trimmed -4% | 2013 Q4 |
| Silvercrest Asset Management Group LLC | 350.9k | 1.38% | $119.0M | added +18.7% | ≤2013 |
| Impax Asset Management Group plc | 345.7k | 1.36% | $117.3M | trimmed -23.9% | 2019 Q1 |
| Charles Schwab Investment Management | 331.2k | 1.30% | $112.4M | added +2.6% | ≤2013 |
| AllianceBernstein | 321.5k | 1.26% | $109.1M | added +917.5% | ≤2013 |
| William Blair Investment Management, LLC | 304.6k | 1.20% | $103.3M | opened | 2026 Q1 |
| Thrivent Financial for Lutherans | 303.7k | 1.20% | $103.0M | added +1.6% | ≤2013 |
| Victory Capital Management INC | 301.5k | 1.19% | $102.3M | trimmed -19% | 2013 Q3 |
| Channing Capital Management, LLC | 294.4k | 1.16% | $99.9M | trimmed -3% | 2024 Q1 |
| Boston Trust Walden CORP | 291.4k | 1.15% | $98.9M | added +14.6% | 2022 Q1 |
| Lord, Abbett & CO. LLC | 280.0k | 1.10% | $95.0M | added +63% | ≤2013 |
| American Century Companies INC | 279.5k | 1.10% | $94.8M | added +6% | 2020 Q2 |
| AQR Capital | 267.2k | 1.05% | $90.7M | trimmed -7.2% | 2019 Q2 |
| Copeland Capital Management, LLC | 263.4k | 1.04% | $89.4M | trimmed -12.2% | 2014 Q3 |
| Principal Financial Group INC | 257.2k | 1.01% | $87.3M | added +6.6% | ≤2013 |
| Ameriprise Financial INC | 255.7k | 1.01% | $86.8M | trimmed -3.7% | ≤2013 |
| Bank OF America CORP /DE/ | 229.2k | 0.90% | $77.8M | trimmed -2.8% | ≤2013 |
| Northern Trust | 228.0k | 0.90% | $77.4M | added +1% | ≤2013 |
| Nordea Investment Management AB | 222.8k | 0.88% | $75.6M | trimmed -4.5% | 2018 Q4 |
| Janus Henderson | 218.6k | 0.86% | $74.2M | unchanged | 2021 Q3 |
| UBS | 217.7k | 0.86% | $73.8M | trimmed -10.8% | ≤2013 |
| Royce & Associates | 216.8k | 0.85% | $73.6M | trimmed -6.6% | ≤2013 |
| Ariel Investments, LLC | 215.4k | 0.85% | $73.1M | trimmed -2.7% | ≤2013 |
| BNY Mellon | 193.0k | 0.76% | $65.5M | added +1.7% | ≤2013 |
| Palisade Capital Management, LP | 169.5k | 0.67% | $57.5M | added +4.5% | ≤2013 |
| Boston Partners | 168.1k | 0.66% | $57.0M | added +26.1% | 2025 Q4 |
| Raymond James Financial INC | 155.5k | 0.61% | $52.8M | trimmed -5.3% | 2015 Q2 |
| Analog Century Management LP (focused) | 154.0k | 0.61% | $52.2M | opened | 2026 Q1 |
| Southpoint Capital Advisors LP (focused) | 150.0k | 0.59% | $50.9M | opened | 2026 Q1 |
| Gotham Asset Management | 144.6k | 0.57% | $49.0M | trimmed -3.6% | 2022 Q2 |
| Invesco | 142.3k | 0.56% | $48.3M | added +22.6% | ≤2013 |
| NEW York State Common Retirement Fund | 142.2k | 0.56% | $48.2M | added +1.3% | ≤2013 |
| Envestnet Asset Management INC | 138.3k | 0.54% | $46.9M | added +5.4% | ≤2013 |
| ACK Asset Management LLC (focused) | 135.0k | 0.53% | $45.8M | opened | 2026 Q1 |
| SEI Investments CO | 133.0k | 0.52% | $45.1M | added +7.1% | ≤2013 |
| MFS Investment Management | 132.9k | 0.52% | $45.1M | trimmed -9% | 2017 Q3 |
| Schroder Investment Management Group | 123.4k | 0.48% | $41.9M | trimmed -28.1% | 2024 Q1 |
| Harvey Partners, LLC (focused) | 121.5k | 0.48% | $41.2M | added +3.4% | 2024 Q1 |
Largest 50 of 512 shown; the full ranked, searchable register is at boothcheck.com/holders/LFUS. 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.