Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
365 institutional managers reported holding RDN for the quarter ended Mar 31, 2026. Together they hold about 86% of shares outstanding; the top 10 hold 51%. 55 opened new positions; 60 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 18.95M | 13.68% | $626.7M | trimmed -2% | ≤2013 |
| Vanguard Group | 16.58M | 11.97% | $548.5M | added +2.1% | ≤2013 |
| LSV Asset Management | 6.15M | 4.44% | $203.4M | added +2.8% | 2014 Q3 |
| Dimensional Fund Advisors | 5.95M | 4.29% | $196.8M | added +4% | ≤2013 |
| State Street | 5.75M | 4.15% | $190.3M | added +0.8% | ≤2013 |
| Donald Smith & CO., INC. | 4.61M | 3.33% | $152.4M | added +52.9% | 2022 Q1 |
| American Century Companies INC | 4.58M | 3.31% | $151.7M | added +9.2% | 2018 Q4 |
| Geode Capital | 3.42M | 2.47% | $113.0M | added +6.2% | ≤2013 |
| Citadel Advisors | 2.10M | 1.52% | $69.5M | trimmed -29.7% | 2022 Q4 |
| Fuller & Thaler Asset Management, INC. | 2.08M | 1.50% | $68.8M | trimmed -3.5% | 2021 Q4 |
| Charles Schwab Investment Management | 1.95M | 1.41% | $64.6M | trimmed -67.2% | ≤2013 |
| BNP Paribas Financial Markets | 1.82M | 1.31% | $60.2M | added +10.7% | ≤2013 |
| Two Sigma | 1.65M | 1.19% | $54.5M | added +96.4% | 2024 Q4 |
| Northern Trust | 1.64M | 1.19% | $54.3M | added +3.4% | ≤2013 |
| Bruni J V & CO /CO (focused) | 1.59M | 1.15% | $52.6M | unchanged | ≤2013 |
| Morgan Stanley | 1.52M | 1.10% | $50.3M | trimmed -7.8% | ≤2013 |
| Polar Capital Holdings PLC | 1.50M | 1.08% | $49.6M | opened | 2026 Q1 |
| Allianz Asset Management GmbH | 1.38M | 1.00% | $45.7M | trimmed -5.6% | 2018 Q4 |
| UBS | 1.37M | 0.99% | $45.4M | added +151.2% | ≤2013 |
| Caisse de depot et placement du Quebec | 1.34M | 0.97% | $44.5M | added +162.2% | 2024 Q3 |
| Goldman Sachs | 1.20M | 0.87% | $39.7M | added +37.7% | ≤2013 |
| River Road Asset Management, LLC | 1.13M | 0.81% | $37.3M | added +129.4% | 2022 Q4 |
| BNY Mellon | 1.12M | 0.81% | $37.2M | trimmed -4.8% | ≤2013 |
| Millennium Management | 915.5k | 0.66% | $30.3M | added +35% | ≤2013 |
| Qube Research & Technologies LTD | 888.1k | 0.64% | $29.4M | added +7.7% | 2023 Q3 |
| First Trust Advisors LP | 876.1k | 0.63% | $29.0M | trimmed -37.3% | 2015 Q2 |
| Nuveen | 848.7k | 0.61% | $28.1M | added +4.2% | ≤2013 |
| Balyasny Asset Management | 827.5k | 0.60% | $27.4M | trimmed -62.2% | 2025 Q1 |
| Bank OF America CORP /DE/ | 758.1k | 0.55% | $25.1M | added +26.1% | ≤2013 |
| Principal Financial Group INC | 658.5k | 0.47% | $21.8M | added +2% | ≤2013 |
| HRT Financial LP | 650.3k | 0.47% | $21.5M | added +70.5% | 2021 Q3 |
| FMR (Fidelity) | 624.9k | 0.45% | $20.7M | trimmed -7.7% | ≤2013 |
| Royal Bank OF Canada | 622.1k | 0.45% | $20.6M | added +5.9% | ≤2013 |
| Wellington Management | 607.0k | 0.44% | $20.1M | trimmed -5.9% | 2015 Q4 |
| Invesco | 599.2k | 0.43% | $19.8M | trimmed -2.3% | ≤2013 |
| Ameriprise Financial INC | 598.8k | 0.43% | $19.8M | added +0.8% | ≤2013 |
| DZ Bank AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 598.6k | 0.43% | $19.8M | added +18.1% | 2025 Q3 |
| Public Sector Pension Investment Board | 598.0k | 0.43% | $19.8M | added +7.5% | 2020 Q2 |
| Cander Asset Management LP (focused) | 558.7k | 0.40% | $18.5M | added +37.6% | 2025 Q4 |
| Man Group | 545.9k | 0.39% | $18.1M | added +88.4% | 2022 Q3 |
| Point72 | 520.0k | 0.38% | $17.2M | added +79.8% | 2025 Q1 |
| Alps Advisors INC | 513.3k | 0.37% | $17.0M | trimmed -4.6% | 2022 Q3 |
| Robeco Institutional Asset Management B.v. | 506.2k | 0.37% | $16.7M | unchanged | 2018 Q1 |
| Wealth Enhancement Advisory Services, LLC | 498.5k | 0.36% | $16.5M | trimmed -44.4% | 2023 Q3 |
| Prudential Financial INC | 465.0k | 0.34% | $15.4M | added +154% | ≤2013 |
| D. E. Shaw | 452.0k | 0.33% | $15.0M | trimmed -5.4% | 2020 Q1 |
| Interval Partners, LP | 444.5k | 0.32% | $14.7M | added +45.9% | 2025 Q1 |
| Rhumbline Advisers | 422.1k | 0.30% | $14.0M | added +3.4% | ≤2013 |
| Healthcare OF Ontario Pension Plan Trust Fund | 420.4k | 0.30% | $13.9M | added +10.5% | 2024 Q2 |
| Franklin Resources | 418.4k | 0.30% | $13.8M | added +298.1% | 2021 Q3 |
Largest 50 of 365 shown; the full ranked, searchable register is at boothcheck.com/holders/RDN. 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.