Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
276 institutional managers reported holding PRAX for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 58%. 68 opened new positions; 38 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Orbis Allan Gray LTD | 2.47M | 8.56% | $796.3M | added +97% | 2025 Q4 |
| BlackRock | 2.32M | 8.05% | $748.7M | added +11.9% | 2020 Q4 |
| Vanguard Group | 2.19M | 7.58% | $705.0M | added +49.9% | 2020 Q4 |
| FMR (Fidelity) | 2.16M | 7.48% | $695.9M | added +59% | 2020 Q4 |
| Perceptive Advisors LLC | 2.04M | 7.05% | $655.7M | added +2% | 2024 Q1 |
| Baker Bros. Advisors LP | 1.75M | 6.07% | $564.6M | added +55.6% | 2022 Q4 |
| Deerfield Management Company, L.p. | 963.4k | 3.33% | $310.2M | added +6.6% | 2025 Q1 |
| Driehaus Capital Management LLC | 949.2k | 3.29% | $305.7M | added +1.7% | 2024 Q1 |
| Cormorant Asset Management, LP (focused) | 885.5k | 3.07% | $285.2M | trimmed -6.8% | 2023 Q2 |
| State Street | 884.2k | 3.06% | $284.8M | unchanged | 2020 Q4 |
| Morgan Stanley | 833.5k | 2.89% | $268.4M | trimmed -6.3% | 2020 Q4 |
| Adage Capital Partners GP, L.l.c. | 815.7k | 2.82% | $262.7M | trimmed -15.5% | 2020 Q4 |
| Goldman Sachs | 710.7k | 2.46% | $228.9M | trimmed -0.8% | 2020 Q4 |
| Geode Capital | 650.9k | 2.25% | $209.6M | added +15.7% | 2020 Q4 |
| T. Rowe Price | 630.9k | 2.18% | $203.2M | trimmed -19.7% | 2024 Q1 |
| Bank OF America CORP /DE/ | 534.6k | 1.85% | $172.2M | added +2.3% | 2020 Q4 |
| RA Capital Management, L.p. | 373.8k | 1.29% | $120.4M | unchanged | 2025 Q4 |
| Hood River Capital Management LLC | 358.6k | 1.24% | $115.5M | added +23.9% | 2025 Q4 |
| Vivo Capital, LLC (focused) | 338.9k | 1.17% | $109.1M | added +3% | 2025 Q2 |
| Soleus Capital Management, L.p. | 330.5k | 1.14% | $106.4M | trimmed -8.9% | 2023 Q2 |
| Pictet Asset Management Holding SA | 286.6k | 0.99% | $92.3M | added +19.1% | 2024 Q4 |
| Logos Global Management LP | 285.0k | 0.99% | $91.8M | trimmed -24% | 2025 Q2 |
| Franklin Resources | 276.1k | 0.96% | $88.9M | trimmed -22.5% | 2024 Q1 |
| Northern Trust | 227.9k | 0.79% | $73.4M | added +18.5% | 2020 Q4 |
| Charles Schwab Investment Management | 215.4k | 0.75% | $69.4M | added +8.6% | 2020 Q4 |
| Woodline Partners LP | 200.0k | 0.69% | $64.4M | added +89.7% | 2024 Q4 |
| T. Rowe Price Investment Management, INC. | 175.2k | 0.61% | $56.4M | added +872.6% | 2025 Q4 |
| Wellington Management | 174.3k | 0.60% | $56.1M | trimmed -1.3% | 2024 Q1 |
| Orbimed Advisors LLC | 172.5k | 0.60% | $55.6M | added +82.5% | 2025 Q4 |
| Aberdeen Group plc | 172.5k | 0.60% | $55.5M | added +27.8% | 2024 Q1 |
| Affinity Asset Advisors, LLC | 170.0k | 0.59% | $54.7M | trimmed -8.1% | 2025 Q4 |
| UBS | 146.6k | 0.51% | $47.2M | added +17.8% | 2021 Q3 |
| BNP Paribas Financial Markets | 143.5k | 0.50% | $46.2M | added +2825.7% | 2024 Q1 |
| American Century Companies INC | 128.3k | 0.44% | $41.3M | added +70.2% | 2025 Q3 |
| Qube Research & Technologies LTD | 128.2k | 0.44% | $41.3M | trimmed -24.1% | 2025 Q3 |
| ArrowMark Colorado Holdings LLC | 117.9k | 0.41% | $38.0M | added +292.8% | 2025 Q4 |
| Velan Capital Investment Management LP (focused) | 100.8k | 0.35% | $32.5M | unchanged | 2023 Q1 |
| BNY Mellon | 87.0k | 0.30% | $28.0M | added +11.7% | 2024 Q2 |
| Janus Henderson | 84.9k | 0.29% | $27.4M | trimmed -97.4% | 2024 Q1 |
| Acuta Capital Partners, LLC (focused) | 84.9k | 0.29% | $27.3M | added +2.2% | 2023 Q2 |
| MetLife Investment Management, LLC | 80.9k | 0.28% | $26.1M | added +551.4% | 2024 Q2 |
| Alyeska Investment Group | 72.2k | 0.25% | $23.2M | trimmed -3% | 2024 Q4 |
| Nuveen | 72.0k | 0.25% | $23.2M | added +44.2% | 2024 Q2 |
| Ikarian Capital, LLC | 71.6k | 0.25% | $23.1M | trimmed -17.3% | 2025 Q1 |
| Silverarc Capital Management, LLC | 71.6k | 0.25% | $23.0M | trimmed -13.2% | 2022 Q3 |
| Ensign Peak Advisors, INC | 68.4k | 0.24% | $22.0M | added +6.4% | 2025 Q4 |
| 72 Investment Holdings, LLC (focused) | 65.9k | 0.23% | $21.2M | unchanged | 2020 Q4 |
| Sofinnova Investments, INC. | 63.7k | 0.22% | $20.5M | trimmed -49.3% | 2025 Q1 |
| Candriam S.c.a. | 63.6k | 0.22% | $20.5M | trimmed -42.5% | 2024 Q3 |
| Invesco | 61.4k | 0.21% | $19.8M | trimmed -20.4% | 2024 Q1 |
Largest 50 of 276 shown; the full ranked, searchable register is at boothcheck.com/holders/PRAX. 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.