GRAIL Ownership | Who Owns GRAIL?
GRAIL Ownership Summary
GRAIL is owned by 83.95% institutional investors, 4.72% insiders, and 11.33% retail investors. Baker bros. advisors lp is the largest institutional shareholder, holding 10.96% of GRAL shares. PRIMECAP Odyssey Aggressive Growth is the top mutual fund, with 3.05% of its assets in GRAIL shares.
GRAL Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | GRAIL | 83.95% | 4.72% | 11.33% |
| Sector | Healthcare Stocks | 35.58% | 11.87% | 52.55% |
| Industry | Diagnostics & Research Stocks | 50.92% | 10.77% | 38.30% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Baker bros. advisors lp | 4.03M | 10.96% | $208.20M |
| Farallon capital management | 3.25M | 8.85% | $168.15M |
| Blackrock funding, inc. /de | 2.97M | 8.08% | $153.41M |
| Vanguard group | 1.98M | 5.48% | $169.54M |
| State street | 1.89M | 5.15% | $97.77M |
| Primecap management co/ca/ | 1.84M | 5.02% | $95.29M |
| Deep track capital, lp | 1.72M | 4.69% | $89.03M |
| Sessa capital im | 1.72M | 4.68% | $88.85M |
| Morgan stanley | 1.63M | 4.44% | $84.35M |
| Arbiter partners capital management | 1.03M | 2.81% | $53.47M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Arbiter partners capital management | 1.03M | 30.64% | $53.47M |
| One fin capital management lp | 380.00K | 7.39% | $22.47M |
| Pvg asset management | 9.67K | 1.76% | $827.91K |
| Wim investment management | 106.40K | 1.63% | $5.50M |
| Sessa capital im | 1.72M | 1.61% | $88.85M |
| Slow capital | 228.26K | 1.53% | $11.80M |
| Deep track capital, lp | 1.72M | 1.45% | $89.03M |
| Gem investment advisors | 26.78K | 1.36% | $1.38M |
| Baker bros. advisors lp | 4.03M | 1.20% | $208.20M |
| Legal advantage investments | 44.50K | 1.19% | $2.30M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Baker bros. advisors lp | 4.03M | 1.20% | 1.94M |
| Sessa capital im | 1.72M | 1.61% | 1.35M |
| Farallon capital management | 3.25M | 0.96% | 911.00K |
| Deep track capital, lp | 1.72M | 1.45% | 700.00K |
| Jefferies financial group | 657.50K | 0.23% | 657.50K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Crcm lp | - | - | -1.07M |
| Wealthquest | - | - | -714.46K |
| Capstone investment advisors | - | - | -369.80K |
| Potrero capital research | - | - | -364.95K |
| One fin capital management lp | 380.00K | 7.39% | -320.00K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Jefferies financial group | 657.50K | 0.23% | 657.50K | $33.98M |
| Casdin capital | 230.00K | 0.90% | 230.00K | $11.89M |
| Vanguard fiduciary trust | 201.23K | 0.00% | 201.23K | $10.40M |
| Natixis | 199.37K | 0.04% | 199.37K | $10.30M |
| Aquatic capital management | 50.38K | 0.07% | 50.38K | $2.60M |
Sold Out
| Holder | Change |
|---|---|
| Private trust co na | -1.00 |
| Global trust asset management | -1.00 |
| Hollencrest capital management | -1.00 |
| Hhm wealth advisors | -1.00 |
| Eagle bay advisors | -1.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 375 | -14.58% | 34,189,862 | 13.96% | 83 | 1.22% | 139 | -42.08% | 116 | 16.00% |
| Dec 31, 2025 | 154 | -57.69% | 4,153,352 | -83.27% | 11 | 0.23% | 77 | -44.20% | 35 | -69.03% |
| Sep 30, 2025 | 157 | -56.75% | 4,532,304 | -82.73% | 12 | 0.23% | 49 | -72.93% | 46 | -40.26% |
| Jun 30, 2025 | 357 | 12.26% | 26,085,825 | 5.46% | 74 | 1.43% | 177 | 27.34% | 78 | -4.88% |
| Mar 31, 2025 | 312 | -2.19% | 24,720,067 | -2.48% | 72 | 1.14% | 134 | -8.84% | 82 | 9.33% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| PRIMECAP Odyssey Aggressive Growth | 1.31M | 3.05% | 1.30K |
| State Street® SPDR® S&P® Biotech ETF | 1.16M | 2.71% | -8.26K |
| Vanguard Total Stock Mkt Idx Inv | 1.16M | 2.71% | 3.62K |
| iShares Russell 2000 ETF | 826.29K | 1.93% | 6.96K |
| Fidelity Small Cap Index | 344.21K | 0.80% | 3.87K |
| Vanguard Institutional Extnd Mkt Idx Tr | 334.04K | 0.78% | 3.21K |
| iShares Russell 2000 Value ETF | 300.53K | 0.70% | 1.62K |
| iShares Biotechnology ETF | 259.47K | 0.60% | 3.84K |
| Vanguard US Opportunities Ins USD Acc | 257.72K | 0.60% | 4.00K |
| Russell 2000 Equity Index Fund B | 217.37K | 0.51% | 18.60K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jun 04, 2026 | Partridge Andrew John | Chief Growth Officer | Sell | $91.07K |
| Apr 08, 2026 | Freidin Aaron | Chief Financial Officer | Sell | $2.29M |
| Apr 08, 2026 | RAGUSA ROBERT P | Chief Executive Officer | Sell | $6.16M |
| Apr 08, 2026 | Ofman Joshua J. | President | Sell | $3.08M |
| Mar 05, 2026 | Freidin Aaron | Chief Financial Officer | Sell | $34.72K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 4 |
| 2026 Q1 | - | 15 |
| 2025 Q4 | - | 13 |
| 2025 Q3 | - | 6 |
| 2025 Q2 | - | 5 |
GRAL Ownership FAQ
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