Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
204 institutional managers reported holding BRSL for the quarter ended Mar 31, 2026. Together they hold about 43% of shares outstanding; the top 10 hold 27%. 29 opened new positions; 38 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Lazard Asset Management LLC | 9.06M | 4.60% | $115.3M | trimmed -4.7% | 2015 Q2 |
| MFS Investment Management | 7.19M | 3.65% | $91.5M | trimmed -14.2% | 2021 Q2 |
| Neuberger Berman Group LLC | 6.82M | 3.46% | $86.8M | added +6.1% | 2018 Q4 |
| Samlyn Capital, LLC | 6.60M | 3.35% | $84.0M | trimmed -8.1% | 2025 Q1 |
| Victory Capital Management INC | 5.83M | 2.96% | $74.3M | added +1677.4% | 2021 Q4 |
| BlackRock | 5.82M | 2.96% | $74.1M | unchanged | 2015 Q2 |
| Brown Advisory INC | 3.18M | 1.62% | $40.5M | added +10% | 2025 Q1 |
| Citadel Advisors | 2.93M | 1.49% | $37.3M | added +199.9% | 2015 Q2 |
| FMR (Fidelity) | 2.45M | 1.24% | $31.1M | added +57.1% | 2018 Q2 |
| Royce & Associates | 2.41M | 1.23% | $30.7M | added +50.1% | 2025 Q1 |
| State Street | 1.95M | 0.99% | $24.8M | added +1.2% | 2015 Q2 |
| Goldman Sachs | 1.93M | 0.98% | $24.5M | added +5.5% | 2015 Q2 |
| Solel Partners LP (focused) | 1.42M | 0.72% | $18.1M | trimmed -49.2% | 2024 Q2 |
| Geode Capital | 1.31M | 0.66% | $16.6M | added +2.7% | 2015 Q3 |
| Vanguard Group | 1.12M | 0.57% | $14.3M | unchanged | 2015 Q2 |
| Morgan Stanley | 1.12M | 0.57% | $14.2M | added +7% | 2015 Q2 |
| Millennium Management | 1.05M | 0.53% | $13.4M | added +23.4% | 2015 Q2 |
| Bank OF America CORP /DE/ | 1.03M | 0.52% | $13.1M | added +17.3% | 2015 Q2 |
| Hotchkis & Wiley Capital Management LLC | 994.7k | 0.51% | $12.7M | added +27.4% | 2020 Q3 |
| Charles Schwab Investment Management | 965.6k | 0.49% | $12.3M | trimmed -16.7% | 2016 Q2 |
| Dimensional Fund Advisors | 891.7k | 0.45% | $11.4M | unchanged | 2015 Q2 |
| Stanley Capital Management, LLC (focused) | 857.0k | 0.43% | $10.9M | unchanged | 2021 Q2 |
| Deutsche Bank AG\ | 846.3k | 0.43% | $10.8M | added +23.2% | 2015 Q2 |
| UBS | 774.5k | 0.39% | $9.9M | trimmed -9% | 2015 Q2 |
| Orvieto Partners, L.p. (focused) | 753.6k | 0.38% | $9.6M | added +2% | 2024 Q4 |
| Northern Trust | 717.9k | 0.36% | $9.1M | added +2.1% | 2015 Q2 |
| HRT Financial LP | 683.5k | 0.35% | $8.7M | trimmed -18.9% | 2024 Q1 |
| Russell Investments Group, LTD. | 594.1k | 0.30% | $7.6M | added +77.9% | 2016 Q4 |
| Squarepoint Ops LLC | 590.3k | 0.30% | $7.5M | opened | 2023 Q2 |
| Thompson Siegel & Walmsley LLC | 528.4k | 0.27% | $6.7M | added +91.6% | 2025 Q2 |
| GAMCO (Gabelli) | 508.3k | 0.26% | $6.5M | added +6.5% | 2015 Q2 |
| Balyasny Asset Management | 502.7k | 0.26% | $6.4M | added +123.7% | 2022 Q4 |
| Shay Capital LLC | 494.9k | 0.25% | $6.3M | added +44% | 2025 Q1 |
| TCW Group INC | 458.4k | 0.23% | $5.8M | added +30.4% | 2025 Q4 |
| Ameriprise Financial INC | 418.0k | 0.21% | $5.3M | added +16.9% | 2016 Q2 |
| Qube Research & Technologies LTD | 416.3k | 0.21% | $5.3M | added +14.9% | 2023 Q1 |
| Arrowstreet Capital | 389.3k | 0.20% | $5.0M | trimmed -37% | 2024 Q2 |
| Jane Street | 368.7k | 0.19% | $4.7M | trimmed -36.2% | 2018 Q2 |
| BNY Mellon | 339.7k | 0.17% | $4.3M | trimmed -5.9% | 2015 Q2 |
| SEI Investments CO | 322.2k | 0.16% | $4.1M | added +101.8% | 2015 Q3 |
| HighTower Advisors, LLC | 291.9k | 0.15% | $3.7M | unchanged | 2025 Q1 |
| D. E. Shaw | 286.7k | 0.15% | $3.6M | added +801% | 2024 Q1 |
| Gamco Investors, INC. et al | 277.1k | 0.14% | $3.5M | added +0.8% | 2015 Q2 |
| Renaissance Technologies | 274.7k | 0.14% | $3.5M | trimmed -39.6% | 2025 Q2 |
| Nuveen | 256.1k | 0.13% | $3.3M | trimmed -1.3% | 2019 Q2 |
| Mizuho Markets Americas LLC | 247.6k | 0.13% | $3.2M | added +47.1% | 2025 Q4 |
| Storebrand Asset Management AS | 233.1k | 0.12% | $3.0M | unchanged | 2025 Q4 |
| Kingsview Wealth Management, LLC | 217.9k | 0.11% | $2.8M | added +31% | 2025 Q4 |
| Franklin Resources | 215.3k | 0.11% | $2.7M | trimmed -22.5% | 2022 Q3 |
| Diametric Capital, LP | 200.7k | 0.10% | $2.6M | trimmed -22.6% | 2018 Q2 |
Largest 50 of 204 shown; the full ranked, searchable register is at boothcheck.com/holders/BRSL. 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.