Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
404 institutional managers reported holding DLB for the quarter ended Mar 31, 2026. Together they hold about 61% of shares outstanding; the top 10 hold 37%. 64 opened new positions; 57 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 8.23M | 8.61% | $494.1M | added +6.4% | ≤2013 |
| BlackRock | 6.54M | 6.84% | $392.7M | added +7.2% | ≤2013 |
| Morgan Stanley | 5.14M | 5.38% | $308.8M | trimmed -16.7% | ≤2013 |
| BNY Mellon | 4.50M | 4.71% | $270.3M | trimmed -14% | ≤2013 |
| State Street | 2.29M | 2.40% | $137.6M | added +2.2% | ≤2013 |
| First Trust Advisors LP | 2.25M | 2.36% | $135.4M | added +19.9% | 2018 Q4 |
| Geode Capital | 1.77M | 1.85% | $106.0M | trimmed -6.4% | ≤2013 |
| Acadian Asset Management | 1.57M | 1.65% | $94.4M | added +33.8% | 2019 Q3 |
| Snyder Capital Management L P | 1.36M | 1.43% | $81.8M | trimmed -4.6% | 2022 Q3 |
| Dimensional Fund Advisors | 1.32M | 1.38% | $79.4M | added +6.8% | ≤2013 |
| Disciplined Growth Investors INC /MN | 1.27M | 1.33% | $76.1M | trimmed -5.6% | ≤2013 |
| Goldman Sachs | 1.18M | 1.24% | $70.9M | added +16.8% | ≤2013 |
| Mackenzie Financial CORP | 1.17M | 1.22% | $70.1M | unchanged | 2018 Q1 |
| AQR Capital | 1.11M | 1.17% | $66.8M | added +31.9% | ≤2013 |
| FMR (Fidelity) | 1.01M | 1.06% | $60.8M | added +5812.2% | 2017 Q4 |
| Fiera Capital CORP | 834.2k | 0.87% | $50.1M | added +2.7% | 2016 Q2 |
| Charles Schwab Investment Management | 804.2k | 0.84% | $48.3M | added +7% | ≤2013 |
| Northern Trust | 532.9k | 0.56% | $32.0M | trimmed -6.8% | ≤2013 |
| UBS | 455.5k | 0.48% | $27.4M | added +8.4% | ≤2013 |
| Boston Trust Walden CORP | 449.5k | 0.47% | $27.0M | trimmed -49.2% | 2020 Q1 |
| Millennium Management | 429.6k | 0.45% | $25.8M | trimmed -11.2% | ≤2013 |
| Bank OF America CORP /DE/ | 426.0k | 0.45% | $25.6M | trimmed -6.7% | ≤2013 |
| Grantham, Mayo, Van Otterloo & CO. LLC | 402.9k | 0.42% | $24.2M | added +1.4% | 2022 Q3 |
| D. E. Shaw | 392.0k | 0.41% | $23.5M | trimmed -2.4% | 2025 Q4 |
| Lazard Asset Management LLC | 387.1k | 0.41% | $23.2M | trimmed -6.7% | 2019 Q1 |
| Ninety One UK LTD | 365.1k | 0.38% | $21.9M | trimmed -8.5% | 2021 Q3 |
| Robeco Institutional Asset Management B.v. | 362.4k | 0.38% | $21.8M | added +98.4% | 2023 Q1 |
| Boston Partners | 352.4k | 0.37% | $21.2M | opened | 2026 Q1 |
| Squarepoint Ops LLC | 336.4k | 0.35% | $20.2M | added +31.2% | 2024 Q3 |
| Frontier Capital Management CO LLC | 319.6k | 0.34% | $19.2M | trimmed -23.7% | 2024 Q4 |
| SEI Investments CO | 308.3k | 0.32% | $18.5M | added +26.4% | 2014 Q4 |
| Shapiro Capital Management LLC (focused) | 303.6k | 0.32% | $18.2M | opened | 2026 Q1 |
| Synergy Asset Management, LLC | 290.4k | 0.30% | $17.4M | opened | 2026 Q1 |
| Alyeska Investment Group | 290.0k | 0.30% | $17.4M | trimmed -20.7% | 2025 Q4 |
| Wellington Management | 268.1k | 0.28% | $16.1M | opened | 2026 Q1 |
| Voloridge Investment Management | 262.6k | 0.28% | $15.8M | trimmed -19.3% | 2024 Q3 |
| Rhumbline Advisers | 260.2k | 0.27% | $15.6M | added +10.6% | ≤2013 |
| Martingale Asset Management L P | 258.7k | 0.27% | $15.5M | added +3.2% | 2025 Q1 |
| Alps Advisors INC | 252.8k | 0.27% | $15.2M | trimmed -4.6% | 2022 Q2 |
| Invesco | 246.9k | 0.26% | $14.8M | added +106.4% | ≤2013 |
| Gotham Asset Management | 241.4k | 0.25% | $14.5M | trimmed -21.5% | 2022 Q3 |
| Victory Capital Management INC | 234.2k | 0.24% | $14.1M | added +43.2% | 2019 Q1 |
| Aristotle Capital Management, LLC | 208.4k | 0.22% | $12.5M | trimmed -16.1% | 2022 Q1 |
| NEW York State Common Retirement Fund | 198.7k | 0.21% | $11.9M | unchanged | ≤2013 |
| Aristotle Capital Boston, LLC | 168.0k | 0.18% | $10.1M | trimmed -12.7% | 2025 Q2 |
| Qube Research & Technologies LTD | 167.4k | 0.17% | $10.1M | trimmed -65.5% | 2022 Q2 |
| Hotchkis & Wiley Capital Management LLC | 157.4k | 0.17% | $9.5M | opened | 2026 Q1 |
| Creative Planning | 151.5k | 0.16% | $9.1M | added +80.9% | 2023 Q3 |
| CalPERS | 143.0k | 0.15% | $8.6M | trimmed -12.6% | ≤2013 |
| Principal Financial Group INC | 135.9k | 0.14% | $8.2M | added +3.3% | 2014 Q1 |
Largest 50 of 404 shown; the full ranked, searchable register is at boothcheck.com/holders/DLB. 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.