Phathom Pharmaceuticals Ownership | Who Owns Phathom Pharmaceuticals?
Phathom Pharmaceuticals Ownership Summary
Phathom Pharmaceuticals is owned by 93.79% institutional investors, 4.56% insiders, and 1.65% retail investors. Frazier life sciences management is the largest institutional shareholder, holding 17.10% of PHAT shares. Invesco OFI Global Equity is the top mutual fund, with 2.95% of its assets in Phathom Pharmaceuticals shares.
PHAT Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Phathom Pharmaceuticals | 93.79% | 4.56% | 1.65% |
| Sector | Healthcare Stocks | 35.49% | 11.78% | 52.72% |
| Industry | Biotech Stocks | 34.84% | 11.71% | 53.45% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Frazier life sciences management | 12.47M | 17.10% | $138.50M |
| Medicxi ventures management (jersey) | 7.46M | 10.24% | $82.93M |
| Invesco | 4.32M | 5.93% | $48.02M |
| Blackrock funding, inc. /de | 4.06M | 5.57% | $45.13M |
| Millennium management | 4.02M | 5.52% | $44.69M |
| Blackrock | 2.93M | 5.01% | $30.14M |
| Carlyle group | 3.50M | 4.80% | $38.85M |
| Vanguard group | 3.18M | 4.33% | $52.71M |
| Nea management company | 1.96M | 2.69% | $21.78M |
| 683 capital management | 1.85M | 2.54% | $20.55M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Medicxi ventures management (jersey) | 7.46M | 8.45% | $82.93M |
| Catalys pacific | 1.49M | 7.19% | $16.60M |
| Propel bio management | 841.27K | 5.90% | $9.35M |
| Penn mutual asset management | 62.80K | 3.57% | $697.73K |
| Frazier life sciences management | 12.47M | 3.56% | $138.50M |
| Stepstone group lp | 422.08K | 2.26% | $4.69M |
| Ghost tree capital | 600.00K | 1.94% | $6.18M |
| Nea management company | 1.96M | 1.24% | $21.78M |
| Birchview capital, lp | 195.00K | 1.23% | $2.17M |
| 683 capital management | 1.85M | 1.07% | $20.55M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Millennium management | 4.02M | 0.02% | 1.94M |
| Macquarie management | 1.21M | 0.02% | 1.21M |
| Franklin resources | 994.50K | 0.00% | 994.50K |
| Perceptive advisors | 925.00K | 0.20% | 925.00K |
| Marshall wace, llp | 860.69K | 0.01% | 860.69K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Jennison associates | - | - | -7.04M |
| Checkpoint capital | - | - | -2.27M |
| Portolan capital management | - | - | -1.70M |
| Orbimed advisors | - | - | -1.45M |
| Tang capital management | - | - | -1.20M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Macquarie management | 1.21M | 0.02% | 1.21M | $13.39M |
| Franklin resources | 994.50K | 0.00% | 994.50K | $11.05M |
| Perceptive advisors | 925.00K | 0.20% | 925.00K | $10.28M |
| Marshall wace, llp | 860.69K | 0.01% | 860.69K | $9.56M |
| Ecor1 capital | 625.00K | 0.29% | 625.00K | $6.94M |
Sold Out
| Holder | Change |
|---|---|
| Srs capital advisors | -6.00 |
| Nelson, van denburg & campbell wealth management group | -7.00 |
| Sbi securities | -23.00 |
| Caitong asset management | -28.00 |
| Capital performance advisors llp | -29.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 174 | -1.69% | 68,392,198 | 10.38% | 93 | 1.32% | 112 | 14.29% | 38 | -25.49% |
| Dec 31, 2025 | 101 | -26.28% | 40,864,285 | -34.45% | 55 | 0.75% | 56 | -22.22% | 30 | 7.14% |
| Sep 30, 2025 | 74 | -37.82% | 29,531,937 | -48.16% | 40 | 0.66% | 37 | -40.32% | 18 | -45.45% |
| Jun 30, 2025 | 124 | -11.43% | 57,375,847 | -9.22% | 79 | 1.03% | 63 | -12.50% | 37 | 8.82% |
| Mar 31, 2025 | 142 | -4.05% | 64,025,009 | -3.98% | 88 | 0.84% | 73 | -22.34% | 35 | 34.62% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Invesco OFI Global Equity | 2.34M | 2.95% | 367.07K |
| Invesco Global A | 2.34M | 2.94% | - |
| Jennison Health Sciences Equity | 1.78M | 2.56% | - |
| Vanguard Total Stock Mkt Idx Inv | 1.96M | 2.47% | - |
| Vanguard US Total Market Shares ETF | 1.65M | 2.36% | 280.90K |
| Jennison SMid Cap Core Equity | 1.58M | 2.27% | - |
| Strategic Advisers U.S. Total Stock{mg} | 1.48M | 2.16% | -273.72K |
| Strategic Advisers Small-Mid Cap | 1.24M | 1.82% | 278.88K |
| PGIM Jennison Small Company A | 1.21M | 1.73% | -373.30K |
| iShares Russell 2000 ETF | 1.08M | 1.35% | 9.07K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Nov 03, 2025 | Breedlove Robert Charles | Principal Accounting Officer | Sell | $7.08K |
| Sep 05, 2025 | Breedlove Robert Charles | Principal Accounting Officer | Sell | $5.57K |
| Jul 16, 2025 | Breedlove Robert Charles | Principal Accounting Officer | Sell | $14.15K |
| May 21, 2025 | Topper James N | - | Buy | $14.61K |
| May 14, 2025 | Topper James N | - | Buy | $20.92K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | - |
| 2025 Q4 | - | 1 |
| 2025 Q3 | - | 2 |
| 2025 Q2 | 8 | 1 |
| 2025 Q1 | 1 | 3 |
PHAT Ownership FAQ
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