Rallybio Ownership | Who Owns Rallybio?
Rallybio Ownership Summary
Rallybio is owned by 3.76% institutional investors, 4.12% insiders, and 92.12% retail investors. Viking global investors lp is the largest institutional shareholder, holding 9.35% of RLYB shares. Vifag 2002 SICAV is the top mutual fund, with 1.89% of its assets in Rallybio shares.
RLYB Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Rallybio | 3.76% | 4.12% | 92.12% |
| Sector | Healthcare Stocks | 232.86% | 10.65% | -143.51% |
| Industry | Biotech Stocks | 382.13% | 10.41% | -292.54% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Viking global investors lp | 4.19M | 9.35% | $2.09M |
| 5am venture management | 3.63M | 8.10% | $1.81M |
| Johnson & johnson | 3.64M | 8.07% | $2.49M |
| New leaf venture partners | 3.30M | 7.36% | $1.65M |
| Tpg gp a | 3.03M | 6.75% | $1.51M |
| Pivotal bioventure partners investment advisor | 2.40M | 5.36% | $1.20M |
| Fmr | 1.69M | 3.78% | $845.50K |
| Almitas capital | 1.54M | 3.43% | $767.83K |
| Vanguard group | 1.02M | 2.26% | $697.15K |
| Renaissance | 835.69K | 1.85% | $573.37K |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Aju ib investment | 754.68K | 18.18% | $4.14M |
| New leaf venture partners | 3.30M | 3.83% | $1.65M |
| Pivotal bioventure partners investment advisor | 2.40M | 0.69% | $1.20M |
| 5am venture management | 3.63M | 0.66% | $1.81M |
| Johnson & johnson | 3.64M | 0.45% | $2.49M |
| Almitas capital | 1.54M | 0.18% | $767.83K |
| Tpg gp a | 3.03M | 0.08% | $1.51M |
| Rangeley capital | 83.01K | 0.04% | $41.42K |
| Viking global investors lp | 4.19M | 0.01% | $2.09M |
| Xtx topco | 59.11K | 0.00% | $29.50K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Goldman sachs group | 181.20K | - | 167.96K |
| Renaissance | 835.69K | 0.00% | 120.89K |
| Rangeley capital | 83.01K | 0.04% | 83.01K |
| Prudential financial | 38.40K | - | 38.40K |
| Resources investment advisors, llc. | 20.00K | 0.00% | 20.00K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Abrdn | - | - | -1.60M |
| Blackrock | 315.63K | - | -1.36M |
| Allostery investments lp | - | - | -752.24K |
| Laurion capital management lp | - | - | -735.54K |
| Canaan partners xi | - | - | -450.00K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Rangeley capital | 83.01K | 0.04% | 83.01K | $41.42K |
| Prudential financial | 38.40K | - | 38.40K | $19.16K |
| Resources investment advisors, llc. | 20.00K | 0.00% | 20.00K | $9.98K |
| Gsa capital partners llp | 19.30K | 0.00% | 19.30K | $13.00K |
| Cubist systematic strategies | 1.82K | - | 1.82K | $2.44K |
Sold Out
| Holder | Change |
|---|---|
| Nelson, van denburg & campbell wealth management group | -5.00 |
| Farther finance advisors | -9.00 |
| Nisa investment advisors | -25.00 |
| Amalgamated bank | -559.00 |
| Raymond james financial | -850.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 35 | -22.22% | 13,556,577 | -52.09% | 3 | 0.09% | 9 | -30.77% | 7 | -46.15% |
| Sep 30, 2025 | 43 | -10.42% | 28,283,712 | -9.33% | 63 | 1.30% | 13 | -23.53% | 13 | 8.33% |
| Jun 30, 2025 | 48 | 9.09% | 31,192,738 | 31.24% | 69 | 2.47% | 17 | 70.00% | 12 | -20.00% |
| Mar 31, 2025 | 47 | -4.08% | 32,001,262 | -1.32% | 71 | 1.35% | 11 | -45.00% | 15 | 36.36% |
| Dec 31, 2024 | 47 | -4.08% | 31,658,675 | 1.43% | 70 | 1.45% | 18 | 38.46% | 11 | -50.00% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vifag 2002 SICAV | 100.00K | 1.89% | - |
| abrdn Healthcare Investors | 630.00K | 1.51% | -125.08K |
| Vanguard Total Stock Mkt Idx Inv | 79.47K | 1.50% | - |
| abrdn Healthcare Opportunities Fund | 594.62K | 1.43% | - |
| abrdn Healthcare Opportunities | 594.62K | 1.43% | - |
| Fidelity Select Biotechnology | 581.09K | 1.40% | - |
| Extended Equity Market Fund E | 45.57K | 0.86% | - |
| Extended Equity Market Fund B | 45.57K | 0.86% | - |
| Vanguard Institutional Extnd Mkt Idx Tr | 32.57K | 0.62% | - |
| abrdn Life Sciences Investors | 245.57K | 0.59% | -131.81K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Feb 23, 2026 | Lieber Jonathan I | Chief Financial Officer | Sell | $3.99K |
| Mar 14, 2023 | Lieber Jonathan I | - | Buy | $26.05K |
| Mar 07, 2023 | PARMAR KUSH | - | Sell | $820.00K |
| Mar 07, 2023 | 5AM Partners V, LLC | - | Sell | $820.00K |
| Nov 15, 2022 | VIKING GLOBAL INVESTORS LP | - | Buy | $20.00M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | 1 |
| 2025 Q2 | - | - |
| 2025 Q1 | - | - |
| 2024 Q2 | - | - |
| 2024 Q1 | - | - |
RLYB Ownership FAQ
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