Prime Medicine Ownership | Who Owns Prime Medicine?
Prime Medicine Ownership Summary
Prime Medicine is owned by 36.30% institutional investors, 23.76% insiders, and 39.94% retail investors. Alphabet is the largest institutional shareholder, holding 11.13% of PRME shares. ARK Genomic Revolution ETF is the top mutual fund, with 2.73% of its assets in Prime Medicine shares.
PRME Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Prime Medicine | 36.30% | 23.76% | 39.94% |
| Sector | Healthcare Stocks | 35.42% | 11.83% | 52.76% |
| Industry | Biotech Stocks | 35.46% | 11.78% | 52.76% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Alphabet | 16.56M | 11.13% | $57.64M |
| Blackrock funding, inc. /de | 8.50M | 5.72% | $29.59M |
| State street | 6.35M | 4.27% | $22.08M |
| Ark investment management | 6.25M | 4.20% | $21.74M |
| Vanguard group | 6.47M | 4.03% | $22.44M |
| T. rowe price investment management | 5.48M | 3.69% | $19.08M |
| Balyasny asset management | 4.12M | 2.77% | $14.35M |
| Ra capital management | 3.00M | 2.32% | $16.62M |
| Casdin capital | 3.17M | 2.13% | $11.02M |
| Woodline partners lp | 3.00M | 2.02% | $10.45M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Mwg management | 1.79M | 12.21% | $9.93M |
| Alphabet | 16.56M | 1.44% | $57.64M |
| Casdin capital | 3.17M | 0.83% | $11.02M |
| Green alpha advisors | 191.17K | 0.66% | $665.27K |
| Ecor1 capital | 1.54M | 0.41% | $8.55M |
| Redmile group | 1.59M | 0.37% | $5.54M |
| Elevate capital advisors | 151.07K | 0.34% | $525.72K |
| Chelsea counsel | 227.00K | 0.34% | $787.69K |
| Ra capital management | 3.00M | 0.20% | $16.62M |
| Ark investment management | 6.25M | 0.17% | $21.74M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Ra capital management | 3.00M | 0.20% | 3.00M |
| Redmile group | 1.59M | 0.37% | 1.59M |
| Vanguard group | 6.47M | 0.00% | 1.55M |
| Ecor1 capital | 1.54M | 0.41% | 1.54M |
| State street | 6.35M | 0.00% | 1.25M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Baker bros. advisors lp | - | - | -1.03M |
| Westwood group | - | - | -883.13K |
| Goldman sachs group | 970.42K | 0.00% | -785.34K |
| Point72 asset management | - | - | -551.03K |
| Morgan stanley | 639.46K | 0.00% | -530.44K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Ra capital management | 3.00M | 0.20% | 3.00M | $16.62M |
| Adage capital partners gp | 771.36K | 0.01% | 771.36K | $4.27M |
| Vanguard fiduciary trust | 717.00K | 0.00% | 717.00K | $2.50M |
| Man group | 189.59K | 0.00% | 189.59K | $1.05M |
| Ikarian capital | 150.00K | 0.08% | 150.00K | $831.00K |
Sold Out
| Holder | Change |
|---|---|
| Larson financial group | -6.00 |
| Federated hermes | -6.00 |
| Cordant | -33.00 |
| Massmutual trust co fsb/adv | -104.00 |
| Parallel advisors | -110.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 118 | -37.23% | 53,995,578 | -44.33% | 36 | 0.99% | 75 | -31.82% | 23 | -43.90% |
| Dec 31, 2025 | 124 | -29.55% | 65,805,123 | -28.75% | 40 | 0.80% | 77 | -34.19% | 22 | -29.03% |
| Sep 30, 2025 | 168 | 33.33% | 92,064,582 | 56.73% | 71 | 3.45% | 110 | 69.23% | 31 | -8.82% |
| Jun 30, 2025 | 125 | 0.81% | 58,714,059 | -1.59% | 45 | 2.19% | 65 | 4.84% | 33 | -5.71% |
| Mar 31, 2025 | 124 | -4.62% | 60,152,185 | -4.70% | 45 | 1.64% | 61 | -12.86% | 35 | 9.38% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| ARK Genomic Revolution ETF | 4.93M | 2.73% | 208.46K |
| ARK Genomic Revolution | 4.65M | 2.57% | -142.94K |
| State Street® SPDR® S&P® Biotech ETF | 4.47M | 2.48% | -44.65K |
| Vanguard Total Stock Mkt Idx Inv | 3.12M | 1.73% | - |
| Vanguard US Total Market Shares ETF | 2.16M | 1.65% | - |
| iShares Russell 2000 ETF | 2.44M | 1.35% | 20.54K |
| Amova ARK Pstv Chg Innovt P JPY Acc | 2.33M | 1.29% | -48.45K |
| Nikko AM ARK Disruptive Innovation A USD | 1.31M | 1.00% | - |
| Nikko AM ARK Pstv Chg Innovt P JPY Acc | 1.25M | 0.93% | -6.92K |
| T. Rowe Price New Horizons | 1.13M | 0.86% | -15.27K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Aug 01, 2025 | GV 2021 GP, L.L.C. | - | Buy | $4.95M |
| Aug 01, 2025 | NELSEN ROBERT | Buy | $10.00M | |
| Aug 01, 2025 | ARCH Venture Partners XII, LLC | - | Buy | $10.00M |
| Aug 01, 2025 | ARCH Venture Partners X, LLC | - | Buy | $10.00M |
| Jun 30, 2025 | Liu David R. | - | Buy | $52.83K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | - |
| 2026 Q1 | - | - |
| 2025 Q3 | 4 | - |
| 2025 Q2 | 7 | - |
| 2025 Q1 | - | - |
PRME Ownership FAQ
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