Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
330 institutional managers reported holding PLMR for the quarter ended Mar 31, 2026. Together they hold about 90% of shares outstanding; the top 10 hold 48%. 48 opened new positions; 52 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 4.39M | 16.04% | $523.7M | unchanged | 2019 Q3 |
| Vanguard Group | 2.65M | 9.68% | $315.9M | trimmed -2% | 2019 Q2 |
| State Street | 1.06M | 3.88% | $126.9M | unchanged | 2019 Q2 |
| Janus Henderson | 934.0k | 3.42% | $111.5M | added +17.4% | 2021 Q3 |
| Westfield Capital Management CO LP | 854.1k | 3.12% | $102.0M | added +1.7% | 2019 Q2 |
| Sumitomo Mitsui Trust Group, INC. | 716.3k | 2.62% | $85.6M | trimmed -8.8% | 2020 Q1 |
| Stephens Investment Management Group LLC | 714.9k | 2.62% | $85.4M | added +3% | 2019 Q3 |
| Geode Capital | 683.0k | 2.50% | $81.6M | added +3.2% | 2019 Q2 |
| Dimensional Fund Advisors | 653.0k | 2.39% | $78.0M | added +3.7% | 2020 Q2 |
| American Century Companies INC | 585.7k | 2.14% | $70.0M | added +27.6% | 2022 Q3 |
| Invesco | 499.3k | 1.83% | $59.6M | trimmed -26.4% | 2019 Q3 |
| Freestone Grove Partners LP | 476.5k | 1.74% | $56.9M | added +97.8% | 2024 Q4 |
| Hood River Capital Management LLC | 426.0k | 1.56% | $50.9M | opened | 2026 Q1 |
| Champlain Investment Partners, LLC | 326.9k | 1.20% | $39.0M | trimmed -1.7% | 2019 Q3 |
| Voya Investment Management LLC | 320.4k | 1.17% | $38.3M | added +33.7% | 2019 Q4 |
| Citadel Advisors | 312.7k | 1.14% | $37.3M | added +155.3% | 2021 Q1 |
| Federated Hermes, INC. | 308.8k | 1.13% | $36.9M | trimmed -6% | 2019 Q3 |
| Goldman Sachs | 301.5k | 1.10% | $36.0M | added +22% | 2019 Q3 |
| Emerald Advisers, LLC | 298.4k | 1.09% | $35.6M | trimmed -1.2% | 2019 Q3 |
| Northern Trust | 287.7k | 1.05% | $34.4M | added +2.1% | 2019 Q2 |
| Artemis Investment Management LLP | 274.6k | 1.00% | $32.8M | added +29.4% | 2024 Q1 |
| T. Rowe Price | 260.3k | 0.95% | $31.1M | trimmed -7.6% | 2019 Q2 |
| Charles Schwab Investment Management | 256.0k | 0.94% | $30.6M | trimmed -1.9% | 2019 Q2 |
| Villere ST Denis J & CO LLC | 246.5k | 0.90% | $29.4M | trimmed -5.3% | 2020 Q4 |
| Qube Research & Technologies LTD | 240.4k | 0.88% | $28.7M | added +104.6% | 2023 Q3 |
| Geneva Capital Management LLC | 214.7k | 0.79% | $25.6M | trimmed -7.3% | 2020 Q2 |
| Morgan Stanley | 209.3k | 0.77% | $25.0M | trimmed -19.4% | 2019 Q2 |
| Empowered Funds, LLC | 195.1k | 0.71% | $23.3M | opened | 2026 Q1 |
| Danske Bank A/S | 193.8k | 0.71% | $23.1M | added +40.1% | 2024 Q1 |
| Atlas Capital Advisors INC. | 181.6k | 0.66% | $21.7M | unchanged | 2020 Q4 |
| BNP Paribas Financial Markets | 179.8k | 0.66% | $21.5M | trimmed -10.8% | 2019 Q2 |
| Handelsbanken Fonder AB | 168.9k | 0.62% | $20.2M | trimmed -27% | 2020 Q2 |
| Emerald Mutual Fund Advisers Trust | 163.3k | 0.60% | $19.5M | added +1% | 2019 Q3 |
| Clark Capital Management Group, INC. | 157.3k | 0.57% | $18.8M | added +38% | 2025 Q1 |
| UBS | 155.0k | 0.57% | $18.5M | added +63.2% | 2019 Q2 |
| Point72 | 148.6k | 0.54% | $17.7M | trimmed -26.5% | 2021 Q4 |
| BNY Mellon | 148.4k | 0.54% | $17.7M | trimmed -16.9% | 2019 Q2 |
| Bank OF America CORP /DE/ | 146.6k | 0.54% | $17.5M | added +1.2% | 2019 Q2 |
| Nuveen | 145.4k | 0.53% | $17.4M | trimmed -7.9% | 2019 Q2 |
| Balyasny Asset Management | 141.8k | 0.52% | $16.9M | trimmed -54.1% | 2024 Q3 |
| T. Rowe Price Investment Management, INC. | 132.3k | 0.48% | $15.8M | added +168.2% | 2025 Q2 |
| Principal Financial Group INC | 131.4k | 0.48% | $15.7M | trimmed -37.2% | 2020 Q2 |
| Bessemer Group INC | 119.2k | 0.44% | $14.2M | trimmed -22.6% | 2021 Q3 |
| Barclays PLC | 115.6k | 0.42% | $13.8M | trimmed -22.8% | 2019 Q2 |
| Woodline Partners LP | 104.2k | 0.38% | $12.4M | trimmed -17.4% | 2025 Q3 |
| Arrowstreet Capital | 103.1k | 0.38% | $12.3M | added +19.2% | 2024 Q1 |
| Blair William & CO/IL | 101.4k | 0.37% | $12.1M | trimmed -20.4% | 2019 Q2 |
| Public Sector Pension Investment Board | 94.8k | 0.35% | $11.3M | added +3.4% | 2020 Q2 |
| SEI Investments CO | 93.2k | 0.34% | $11.1M | added +71.7% | 2019 Q3 |
| State OF Wisconsin Investment Board | 90.2k | 0.33% | $10.8M | trimmed -7.8% | 2019 Q2 |
Largest 50 of 330 shown; the full ranked, searchable register is at boothcheck.com/holders/PLMR. 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.