Amphastar Pharmaceuticals Ownership | Who Owns Amphastar Pharmaceuticals?


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Amphastar Pharmaceuticals Ownership Summary


Amphastar Pharmaceuticals is owned by 71.36% institutional investors, 22.47% insiders, and 6.17% retail investors. Blackrock is the largest institutional shareholder, holding 12.33% of AMPH shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 5.00% of its assets in Amphastar Pharmaceuticals shares.

AMPH Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockAmphastar Pharmaceuticals71.36%22.47%6.17%
SectorHealthcare Stocks 47.31%8.01%44.69%
IndustrySpecialty & Generic Drug Manufacturers Stocks33.38%9.20%57.42%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock5.94M12.33%$237.70M
Vanguard group2.67M5.54%$106.91M
Federated hermes1.94M4.03%$77.79M
Td asset management1.69M3.51%$67.66M
Neuberger berman group1.62M3.37%$64.90M
State street1.53M3.17%$61.18M
Fuller & thaler asset management1.27M2.64%$50.91M
Epoch investment partners1.08M2.24%$43.15M
Dimensional fund advisors lp1.07M2.22%$42.81M
Geode capital management906.35K1.88%$36.26M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Boone capital management495.09K5.17%$19.80M
Lam group130.80K4.41%$5.23M
Aurora investment counsel54.47K1.28%$2.18M
Mesirow institutional investment management353.45K1.24%$14.14M
Alphacentric advisors25.00K0.74%$1.00M
Granite investment partners397.51K0.66%$15.90M
Bridge city capital48.95K0.66%$1.96M
Moody aldrich partners55.73K0.43%$2.23M
Redwood investments26.77K0.36%$1.06M
Portolan capital management108.86K0.36%$4.35M

Top Buyers

HolderShares% AssetsChange
Td asset management1.69M0.06%680.98K
Millennium management738.75K0.01%338.65K
Epoch investment partners1.08M0.20%280.39K
Marshall wace, llp227.13K0.01%227.13K
American century companies740.41K0.02%121.76K

Top Sellers

HolderShares% AssetsChange
Oberweis asset management inc/135.06K0.33%-282.81K
Jacobs levy equity management28.62K0.00%-166.37K
Lsv asset management80.40K0.01%-144.37K
Blackrock5.94M0.01%-136.52K
Federated hermes1.94M0.18%-132.30K

New Positions

HolderShares% AssetsChangeValue
Marshall wace, llp227.13K0.01%227.13K$9.09M
Brandywine global investment management74.11K0.02%74.11K$2.96M
Aurora investment counsel54.47K1.28%54.47K$2.18M
Arkadios wealth advisors25.75K0.07%25.75K$1.03M
Alphacentric advisors25.00K0.74%25.00K$1.00M

Sold Out

HolderChange
Financial gravity asset management-1.00
Nelson, van denburg & campbell wealth management group-7.00
Financial synergies wealth advisors-15.00
First horizon advisors-36.00
Private wealth management group-40.00

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Jun 30, 2024268-1.83%34,405,3022.58%711.47%1382.99%96-1.03%
Mar 31, 2024273-2.85%33,540,0170.70%691.46%134-8.84%976.59%
Dec 31, 20232819.34%33,305,4864.00%691.60%14714.84%91-1.09%
Sep 30, 20232573.21%32,023,9141.99%651.56%128-0.78%922.22%
Jun 30, 202324912.67%31,398,6163.94%641.64%12920.56%909.76%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
iShares Core S&P Small-Cap ETF2.42M5.00%2.38K
Federated Hermes Kaufmann Small Cap A1.31M2.68%-
Federated Hermes Kaufmann Small Cap Grow1.31M2.68%-
FullerThaler Behavioral Small-Cap Equity1.20M2.45%-
FullerThaler Behavioral Sm-Cp Eq R61.20M2.45%-
Vanguard Total Stock Mkt Idx Inv1.14M2.34%1.24K
Neuberger Berman Genesis Inv1.07M2.18%-5.33K
iShares Russell 2000 ETF988.77K2.04%-2.23K
TD U.S. Capital Reinvestment I736.00K1.50%-34.00K
Federated Hermes Kaufmann Growth615.00K1.26%-

Recent Insider Transactions


DateNameRoleActivityValue
Nov 12, 2024Zhou Rong SENIOR EVP, PRODUCTION CENTERSell$336.93K
Nov 12, 2024PRINS RICHARD K-Sell$243.99K
Nov 06, 2024Liawatidewi Yakob EVP CORP ADMIN CENTERSell$271.39K
Nov 06, 2024PETERS WILLIAM J CFO, EVP & TREASURERSell$386.52K
Sep 13, 2024Zhou Rong SENIOR EVP, PRODUCTION CENTERSell$144.78K

Insider Transactions Trends


DateBuySell
2024 Q4-4
2024 Q3-5
2024 Q2-6
2024 Q1-25
2023 Q4-12

AMPH Ownership FAQ


Who Owns Amphastar Pharmaceuticals?

Amphastar Pharmaceuticals shareholders are primarily institutional investors at 71.36%, followed by 22.47% insiders and 6.17% retail investors. The average institutional ownership in Amphastar Pharmaceuticals's industry, Specialty & Generic Drug Manufacturers Stocks, is 33.38%, which Amphastar Pharmaceuticals exceeds.

Who owns the most shares of Amphastar Pharmaceuticals?

Amphastar Pharmaceuticals’s largest shareholders are Blackrock (5.94M shares, 12.33%), Vanguard group (2.67M shares, 5.54%), and Federated hermes (1.94M shares, 4.03%). Together, they hold 21.90% of Amphastar Pharmaceuticals’s total shares outstanding.

Does Blackrock own Amphastar Pharmaceuticals?

Yes, BlackRock owns 12.33% of Amphastar Pharmaceuticals, totaling 5.94M shares as of Jun 2024. This represents 0.01% of BlackRock's total assets, with a market value of 237.7M$. In the last quarter, BlackRock decreased its holdings by -137K shares, a -2.25% change.

Who is Amphastar Pharmaceuticals’s biggest shareholder by percentage of total assets invested?

Boone capital management is Amphastar Pharmaceuticals’s biggest shareholder by percentage of total assets invested, with 5.17% of its assets in 495.09K Amphastar Pharmaceuticals shares, valued at 19.8M$.

Who is the top mutual fund holder of Amphastar Pharmaceuticals shares?

iShares Core S&P Small-Cap ETF is the top mutual fund holder of Amphastar Pharmaceuticals shares, with 5.00% of its total shares outstanding invested in 2.42M Amphastar Pharmaceuticals shares.

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