Companies / Prothena Corp Public Ltd Co / Activity
Activity — Prothena Corp Public Ltd Co
66 moves.
Top impactInsider · CEO movesInsider · biggest buysInsider · biggest sellsInstitution · biggest movesInstitution · new positions
| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q2 2025 as of | Boxer Capital Management, LLC 13F manager | Exit | Common stock | $-8.54M | -690K -100.00% | 0 | medium |
| Q2 2026 as of | BlackRock, Inc. 13F manager | Add | Common stock | $7.45M | +760K +18.51% | 4,867,955 9.48% of shares | medium |
| Q1 2026 as of | Two Sigma Investments, LP 13F manager | Add | Common stock | $5.21M | +536K +79.96% | 1,205,978 2.35% of shares | medium |
| Q1 2026 as of | Arrowstreet Capital, Limited Partnership 13F manager | Exit | Common stock | $-2.85M | -298K -100.00% | 0 | low |
| Q1 2026 as of | Penbrook Management LLC 13F manager | New | Common stock | $2.64M | +272K | 271,720 0.53% of shares | low |
| Q1 2024 as of | Barclays PLC 13F manager | Trim | Common stock | $-2.09M | -84K -59.10% | 58,332 0.11% of shares | low |
| Q4 2023 as of | Barclays PLC 13F manager | Add | Common stock | $2.06M | +57K +65.75% | 142,607 0.28% of shares | low |
| Q1 2026 as of | Renaissance Technologies LLC 13F manager | Add | Common stock | $1.67M | +172K +39.49% | 607,515 1.18% of shares | low |
| Q4 2025 as of | Bank of America Corp /De 13F manager | Add | Common stock | $1.44M | +150K +54.23% | 427,360 0.83% of shares | low |
| Q2 2026 as of | State Street Corporation 13F manager | Add | Common stock | $1.23M | +126K +5.54% | 2,393,424 4.66% of shares | low |
| Q1 2026 as of | Palo Alto Investors LP 13F manager | Trim | Common stock | $-1.09M | -112K -8.48% | 1,208,568 2.35% of shares | low |
| Q2 2026 as of | Focused Wealth Management, Inc 13F manager | Add | Common stock | $978.7K | +100K +93.01% | 207,445 0.40% of shares | low |
| Q3 2023 as of | Barclays PLC 13F manager | Add | Common stock | $879.3K | +18K +26.87% | 86,035 0.17% of shares | low |
| Q3 2024 as of | Barclays PLC 13F manager | Add | Common stock | $835.1K | +50K +110.18% | 95,222 0.19% of shares | low |
| Q1 2026 as of | Federated Hermes Inc 13F manager | Add | Common stock | $830.9K | +85K +8.77% | 1,059,849 2.06% of shares | low |
| Q4 2025 as of | Barclays PLC 13F manager | Add | Common stock | $817.0K | +86K +87.23% | 183,625 0.36% of shares | low |
| Q1 2026 as of | D. E. Shaw & Co., Inc. 13F manager | Add | Common stock | $796.8K | +82K +4.88% | 1,763,347 3.43% of shares | low |
| Q1 2023 as of | Barclays PLC 13F manager | Trim | Common stock | $-714.2K | -15K -18.57% | 64,604 0.13% of shares | low |
| Q4 2025 as of | Norges Bank 13F manager | Exit | Common stock | $-711.0K | -57K -100.00% | 0 | low |
| Q1 2026 as of | Los Angeles Capital Management LLC 13F manager | Trim | Common stock | $-690.0K | -71K -74.41% | 24,419 0.05% of shares | low |
| Q1 2026 as of | Campbell & CO Investment Adviser LLC 13F manager | Add | Common stock | $470.8K | +48K +51.44% | 142,587 0.28% of shares | low |
| Q1 2026 as of | Geode Capital Management, LLC 13F manager | Add | Common stock | $341.2K | +35K +3.30% | 1,098,166 2.14% of shares | low |
| Q2 2026 as of | WINTON GROUP Ltd 13F manager | New | Common stock | $298.6K | +31K | 30,500 0.06% of shares | low |
| Q2 2026 as of | Cornerstone Investment Partners, LLC 13F manager | Exit | Common stock | $-298.3K | -31K -100.00% | 0 | low |
| Q1 2026 as of | Cornerstone Investment Partners, LLC 13F manager | New | Common stock | $298.3K | +31K | 30,687 0.06% of shares | low |
| Q1 2026 as of | Rafferty Asset Management, LLC 13F manager | Trim | Common stock | $-284.7K | -29K -35.48% | 53,266 0.10% of shares | low |
| Q4 2025 as of | Persistent Asset Partners Ltd 13F manager | New | Common stock | $273.0K | +29K | 28,589 0.06% of shares | low |
| Q1 2025 as of | Barclays PLC 13F manager | Trim | Common stock | $-271.7K | -22K -20.84% | 83,381 0.16% of shares | low |
| Q2 2024 as of | Barclays PLC 13F manager | Trim | Common stock | $-268.9K | -13K -22.33% | 45,306 0.09% of shares | low |
| Q2 2023 as of | Barclays PLC 13F manager | Add | Common stock | $219.0K | +3K +4.97% | 67,812 0.13% of shares | low |
| Q1 2026 as of | Millennium Management LLC 13F manager | Exit | Common stock | $-209.9K | -22K -100.00% | 0 | low |
| Q2 2026 as of | Quadrature Capital Ltd 13F manager | Trim | Common stock | $-206.4K | -21K -67.81% | 10,007 0.02% of shares | low |
| Q2 2025 as of | Barclays PLC 13F manager | Add | Common stock | $197.1K | +32K +38.94% | 115,848 0.23% of shares | low |
| Q3 2025 as of | Barclays PLC 13F manager | Trim | Common stock | $-173.5K | -18K -15.34% | 98,075 0.19% of shares | low |
| Q1 2026 as of | AQR Capital Management, LLC 13F manager | Add | Common stock | $167.5K | +17K +9.23% | 204,016 0.40% of shares | low |
| Q1 2026 as of | Great Lakes Advisors, LLC 13F manager | Add | Common stock | $159.4K | +16K +124.38% | 29,593 0.06% of shares | low |
| Q1 2026 as of | Graham Capital Management, L.P. 13F manager | Trim | Common stock | $-145.2K | -15K -53.81% | 12,820 0.02% of shares | low |
| Q1 2026 as of | Mariner, LLC 13F manager | Trim | Common stock | $-144.4K | -15K -2.57% | 563,082 1.10% of shares | low |
| Q4 2024 as of | Barclays PLC 13F manager | Add | Common stock | $140.1K | +10K +10.62% | 105,338 0.21% of shares | low |
| Q1 2026 as of | ProShare Advisors LLC 13F manager | Exit | Common stock | $-99.6K | -10K -100.00% | 0 | low |
| Q1 2026 as of | Marshall Wace, LLP 13F manager | Trim | Common stock | $-99.2K | -10K -18.63% | 44,574 0.09% of shares | low |
| Q1 2026 as of | Prudential Financial Inc 13F manager | New | Common stock | $97.4K | +10K | 10,025 0.02% of shares | low |
| Q2 2026 as of | Persistent Asset Partners Ltd 13F manager | Add | Common stock | $93.1K | +10K +33.27% | 38,100 0.07% of shares | low |
| Q1 2026 as of | Intech Investment Management LLC 13F manager | Trim | Common stock | $-84.8K | -9K -42.36% | 11,874 0.02% of shares | low |
| Q2 2026 as of | Deutsche Bank AG 13F manager | Add | Common stock | $76.2K | +8K +21.95% | 43,270 0.08% of shares | low |
| Q1 2026 as of | CPPIB Crestone Peak Resources Canada Inc. 13F manager | Exit | Common stock | $-67.8K | -7K -100.00% | 0 | low |
| Q1 2026 as of | Profund Advisors LLC 13F manager | Trim | Common stock | $-64.3K | -7K -21.59% | 24,005 0.05% of shares | low |
| Q1 2026 as of | Bank of New York Mellon Corp/The 13F manager | Add | Common stock | $35.2K | +4K +2.73% | 136,322 0.27% of shares | low |
| Q4 2024 as of | Danske Bank A/S 13F manager | Exit | Common stock | $-23.4K | -1K -100.00% | 0 | low |
| Q3 2024 as of | Danske Bank A/S 13F manager | New | Common stock | $23.4K | +1K | 1,400 <0.01% of shares | low |