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Prime Medicine Ownership | Who Owns Prime Medicine?

OverviewForecastRevenueFinancialsChart

Prime Medicine Ownership Summary

Prime Medicine is owned by 60.65% institutional investors, 23.66% insiders, and 15.68% retail investors. Alphabet is the largest institutional shareholder, holding 9.35% of PRME shares. ARK Genomic Revolution ETF is the top mutual fund, with 4.25% of its assets in Prime Medicine shares.

PRME Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockPrime Medicine60.65%23.66%15.68%
SectorHealthcare Stocks 50.44%12.38%37.18%
IndustryBiotech Stocks 48.97%12.07%38.96%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Alphabet16.56M9.35%$61.12M
Blackrock funding, inc. /de9.60M5.42%$35.43M
Ark investment management8.35M4.71%$30.81M
State street7.58M4.28%$27.96M
Vanguard group6.47M4.03%$22.44M
T. rowe price investment management5.24M2.96%$19.33M
Vanguard capital management4.52M2.55%$16.69M
Ra capital management3.00M2.32%$16.62M
Balyasny asset management3.97M2.24%$14.65M
Goldman sachs group3.43M1.94%$12.66M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Mwg management1.79M12.21%$9.93M
Chelsea counsel449.06K0.70%$1.66M
Casdin capital3.17M0.58%$11.69M
Green alpha advisors185.02K0.46%$682.74K
Ecor1 capital1.54M0.41%$8.55M
Redmile group1.39M0.34%$5.13M
Adar1 capital management2.00M0.34%$7.37M
Ra capital management3.00M0.20%$16.62M
Ark investment management8.35M0.20%$30.81M
Nikko asset management americas2.41M0.11%$8.86M

Top Buyers

HolderShares% AssetsChange
Ra capital management3.00M0.20%3.00M
Goldman sachs group3.43M0.00%2.46M
Ark investment management8.35M0.20%2.10M
Citadel advisors2.05M0.00%1.72M
Vanguard group6.47M0.00%1.55M

Top Sellers

HolderShares% AssetsChange
Baker bros. advisors lp---1.03M
Westwood group---883.13K
D. e. shaw648.94K0.00%-744.68K
Renaissance117.41K0.00%-623.63K
Nikko asset management americas2.41M0.11%-533.77K

New Positions

HolderShares% AssetsChangeValue
Ra capital management3.00M0.20%3.00M$16.62M
Sixth street partners management company927.54K0.00%927.54K$3.42M
Adage capital partners gp771.36K0.01%771.36K$4.27M
Jain global215.22K0.00%215.22K$794.15K
Jupiter asset management209.49K0.00%209.49K$773.02K

Sold Out

HolderChange
Twin peaks wealth advisors-3.00
Federated hermes-6.00
Larson financial group-6.00
Sjs investment consulting-10.00
Cordant-33.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Jun 30, 2026192-2.54%107,413,3988.98%601.38%86-24.56%6838.78%
Mar 31, 2026118-37.23%53,995,578-44.33%360.99%75-31.82%23-43.90%
Dec 31, 2025124-29.55%65,805,123-28.75%400.80%77-34.19%22-29.03%
Sep 30, 202516833.33%92,064,58256.73%713.45%11069.23%31-8.82%
Jun 30, 20251250.81%58,714,059-1.59%452.19%654.84%33-5.71%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
ARK Genomic Revolution ETF7.67M4.25%167.58K
State Street® SPDR® S&P® Biotech ETF5.15M2.84%11.81K
ARK Genomic Revolution4.83M2.67%184.64K
Vanguard Total Stock Mkt Idx Inv3.12M1.73%-
Vanguard Morn Total Stk Mkt Idx Investor3.12M1.73%-
Vanguard US Total Market Shares ETF2.16M1.65%-
ARK Venture D2.48M1.37%1.40M
iShares Russell 2000 ETF2.45M1.35%-43.58K
Amova ARK Pstv Chg Innovt P JPY Acc1.90M1.05%-237.54K
Nikko AM ARK Disruptive Innovation A USD1.31M1.00%-

Recent Insider Transactions

DateNameRoleActivityValue
Aug 01, 2025GV 2021 GP, L.L.C.-Buy$4.95M
Aug 01, 2025NELSEN ROBERT Buy$10.00M
Aug 01, 2025ARCH Venture Partners XII, LLC-Buy$10.00M
Aug 01, 2025ARCH Venture Partners X, LLC-Buy$10.00M
Jun 30, 2025Liu David R.-Buy$52.83K

Insider Transactions Trends

DateBuySell
2026 Q2--
2026 Q1--
2025 Q34-
2025 Q27-
2025 Q1--

PRME Ownership FAQ

Who Owns Prime Medicine?

Prime Medicine shareholders are primarily institutional investors at 60.65%, followed by 23.66% insiders and 15.69% retail investors. The average institutional ownership in Prime Medicine's industry, Biotech Stocks , is 48.97%, which Prime Medicine exceeds.

Who owns the most shares of Prime Medicine?

Prime Medicine’s largest shareholders are Alphabet (16.56M shares, 9.35%), Blackrock funding, inc. /de (9.6M shares, 5.42%), and Ark investment management (8.35M shares, 4.71%). Together, they hold 19.49% of Prime Medicine’s total shares outstanding.

Does Blackrock own Prime Medicine?

BlackRock is not among the top 10 institutional shareholders of Prime Medicine.

Who is Prime Medicine’s biggest shareholder by percentage of total assets invested?

Mwg management is Prime Medicine’s biggest shareholder by percentage of total assets invested, with 12.21% of its assets in 1.79M Prime Medicine shares, valued at 9.93M$.

Who is the top mutual fund holder of Prime Medicine shares?

ARK Genomic Revolution ETF is the top mutual fund holder of Prime Medicine shares, with 4.25% of its total shares outstanding invested in 7.67M Prime Medicine shares.

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