Amphastar Pharmaceuticals Ownership | Who Owns Amphastar Pharmaceuticals?


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Amphastar Pharmaceuticals Ownership Summary


Amphastar Pharmaceuticals is owned by 72.73% institutional investors, 22.41% insiders, and 4.86% 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 5.04% of its assets in Amphastar Pharmaceuticals shares.

AMPH Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockAmphastar Pharmaceuticals72.73%22.41%4.86%
SectorHealthcare Stocks 88.01%8.90%3.09%
IndustrySpecialty & Generic Drug Manufacturers Stocks34.23%10.67%55.10%

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
Pacer advisors1.35M2.78%$50.14M
Fuller & thaler asset management1.27M2.64%$50.91M
Epoch investment partners1.08M2.24%$43.15M
Dimensional fund advisors lp1.07M2.22%$42.81M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Boone capital management495.09K5.17%$19.80M
Lam group130.80K3.46%$4.86M
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
Redwood investments26.77K0.36%$1.06M
Portolan capital management108.86K0.36%$4.35M
Oberweis asset management inc/135.06K0.33%$5.40M

Top Buyers

HolderShares% AssetsChange
Pacer advisors1.35M0.11%1.35M
Td asset management1.69M0.06%680.98K
Boston trust walden978.92K0.26%439.28K
Millennium management738.75K0.01%338.65K
Epoch investment partners1.08M0.20%280.39K

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
Alphacentric advisors25.00K0.74%25.00K$1.00M
Polaris capital management24.50K0.04%24.50K$909.68K

Sold Out

HolderChange
Financial gravity asset management-1.00
Nelson, van denburg & campbell wealth management group-7.00
Financial synergies wealth advisors-15.00
Reuter james wealth management-20.00
First horizon advisors-36.00

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Sep 30, 20242802.94%35,359,6972.73%721.47%140-93-4.12%
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%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
iShares Core S&P Small-Cap ETF2.42M5.04%1.24K
Pacer US Small Cap Cash Cows 100 ETF1.35M2.80%-4.38K
Federated Hermes Kaufmann Small Cap A1.31M2.68%-
Federated Hermes Kaufmann Small Cap Grow1.31M2.68%-
FullerThaler Behavioral Small-Cap Equity1.19M2.48%-5.40K
FullerThaler Behavioral Sm-Cp Eq R61.19M2.48%-5.40K
Vanguard Total Stock Mkt Idx Inv1.13M2.35%2.06K
iShares Russell 2000 ETF1.03M2.14%-3.95K
T. Rowe Price Integrated US SmCapGrEq850.11K1.77%425.06K
Neuberger Berman Genesis Inv794.66K1.65%-271.05K

Recent Insider Transactions


DateNameRoleActivityValue
Dec 12, 2024Zhou Rong SENIOR EVP, PRODUCTION CENTERSell$310.98K
Dec 13, 2024Zhou Rong SENIOR EVP, PRODUCTION CENTERSell$361.84K
Dec 09, 2024PRINS RICHARD K-Sell$437.70K
Nov 12, 2024Zhou Rong SENIOR EVP, PRODUCTION CENTERSell$336.93K
Nov 12, 2024PRINS RICHARD K-Sell$243.99K

Insider Transactions Trends


DateBuySell
2024 Q4-5
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 72.73%, followed by 22.41% insiders and 4.86% retail investors. The average institutional ownership in Amphastar Pharmaceuticals's industry, Specialty & Generic Drug Manufacturers Stocks, is 34.23%, 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 5.04% of its total shares outstanding invested in 2.42M Amphastar Pharmaceuticals shares.

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