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AMPH

AMPH

Amphastar Pharmaceuticals, Inc.

Institutional holders
215
As of Q2 2026
Total 13F value
$619.7M
Sum of disclosed positions
New positions
34
This quarter
Sold positions
33
This quarter

Top holders

Institutions with disclosed positions in this stock

FundValueShares% PortfolioChange
BlackRock, Inc.

Blackrock, Inc.

$105.4M5.22M0.00%-3.6%
DIMENSIONAL FUND ADVISORS LP

Dimensional Fund Advisors Lp

$46.5M2.31M0.01%+13.7%
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

California State Teachers Retirement System

$36.9M765.7K0.00%+2477.9%
STATE STREET CORP

State Street Corporation

$33.1M1.64M0.00%+2.1%
VANGUARD CAPITAL MANAGEMENT LLC

Vanguard Capital Management Llc

$29.9M1.48M0.00%-4.0%
AMERICAN CENTURY COMPANIES INC

American Century Companies Inc

$23.7M1.18M0.01%+15.6%
MARSHALL WACE, LLP

Marshall Wace, Llp

$21.5M1.07M0.01%+4.0%
GEODE CAPITAL MANAGEMENT, LLC

Geode Capital Management, Llc

$19.6M969.8K0.00%-0.7%
FULLER & THALER ASSET MANAGEMENT, INC.

Fuller & Thaler Asset Management, Inc.

$19.2M949.2K0.05%-32.0%
D. E. Shaw & Co., Inc.

D.E. Shaw & Co

$17.9M887.0K0.01%+33.3%
VANGUARD PORTFOLIO MANAGEMENT LLC

Vanguard Portfolio Management Llc

$16.3M809.6K0.00%+2.8%
LSV ASSET MANAGEMENT

Lsv Asset Management

$13M642.0K0.02%-1.5%
RENAISSANCE TECHNOLOGIES LLC

Renaissance Technologies

$10.6M525.1K0.01%-5.2%
GOLDMAN SACHS GROUP INC

Goldman Sachs Group

$10.2M505.4K0.00%+53.4%
SYSTEMATIC FINANCIAL MANAGEMENT LP

Systematic Financial Management Lp

$8.8M437.4K0.17%-3.4%
MORGAN STANLEY

Morgan Stanley

$8.8M434.8K0.00%+3.5%
UBS Group AG

Ubs Group Ag

$7.9M393.1K0.00%-6.5%
HRT FINANCIAL LP

Hrt Financial Lp

$7.8M387.5K0.01%+589.8%
DENALI ADVISORS LLC

Denali Advisors Llc

$7.6M376.0K0.76%+41.1%
NORTHERN TRUST CORP

Northern Trust Corp

$7.5M371.0K0.00%-0.3%
Bridge City Capital, LLC

Bridge City Capital, Llc

$6.8M338.7K1.56%+1.1%
CHARLES SCHWAB INVESTMENT MANAGEMENT INC

Charles Schwab Investment Management Inc

$6.3M310.2K0.00%-3.4%
Sixth Street Partners Management Company, L.P.

Sixth Street Partners Management Company, L.P.

$6.3M310.2K0.00%New Position
BRIDGEWAY CAPITAL MANAGEMENT, LLC

Bridgeway Capital Management, Llc

$6M299.0K0.11%-9.5%
ROYCE & ASSOCIATES LP

Royce & Associates Lp

$5.9M294.8K0.05%-27.4%
TWO SIGMA INVESTMENTS, LP

Two Sigma Investments

$5M248.1K0.00%+79.6%
FIRST TRUST ADVISORS LP

First Trust Advisors Lp

$5M247.0K0.00%+64.0%
Pacer Advisors, Inc.

Pacer Advisors, Inc.

$4.9M241.2K0.01%New Position
PUBLIC SECTOR PENSION INVESTMENT BOARD

Public Sector Pension Investment Board

$4.7M233.3K0.01%-7.8%
Bank of New York Mellon Corp

Bank Of New York Mellon Corp

$4.7M232.3K0.00%-4.5%
VANGUARD FIDUCIARY TRUST CO

Vanguard Fiduciary Trust Co

$4.5M224.5K0.00%-2.8%
AQR CAPITAL MANAGEMENT LLC

Aqr Capital Management Llc

$4.2M208.7K0.00%+164.9%
PRINCIPAL FINANCIAL GROUP INC

Principal Financial Group Inc

$4.1M204.3K0.00%-2.3%
NEW YORK STATE COMMON RETIREMENT FUND

New York State Common Retirement Fund

$3.7M181.1K0.00%+21.8%
JANE STREET GROUP, LLC

Jane Street Group, Llc

$3.6M178.7K0.00%+93.3%
EXCHANGE TRADED CONCEPTS, LLC

Exchange Traded Concepts, Llc

$3.5M174.1K0.01%+5.6%
Empowered Funds, LLC

Empowered Funds, Llc

$3.3M162.8K0.02%-10.2%
O'SHAUGHNESSY ASSET MANAGEMENT, LLC

O'Shaughnessy Asset Management, Llc

$3.2M159.4K0.01%+53.4%
Invesco Ltd.

Invesco Ltd.

$3.2M158.1K0.00%-73.9%
VICTORY CAPITAL MANAGEMENT INC

Victory Capital Management Inc

$3M149.6K0.00%-40.1%
Universal- Beteiligungs- und Servicegesellschaft mbH

Universal- Beteiligungs- Und Servicegesellschaft Mbh

$2.8M139.4K0.00%Unchanged
BANK OF AMERICA CORP /DE/

Bank Of America

$2.8M136.8K0.00%-21.5%
ALGERT GLOBAL LLC

Algert Global Llc

$2.7M131.4K0.03%+110.7%
LAM GROUP, INC.

Lam Group, Inc.

$2.6M130.8K1.31%Unchanged
NORDEA INVESTMENT MANAGEMENT AB

Nordea Investment Management Ab

$2.6M126.9K0.00%+2.5%
BESSEMER GROUP INC

Bessemer Group Inc

$2.4M121.3K0.00%-0.6%
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

Arrowstreet Capital, Limited Partnership

$2.4M116.7K0.00%-64.1%
Nuveen, LLC

Nuveen, Llc

$1.8M88.4K0.00%+15.4%
Vanguard Global Advisers, LLC

Vanguard Global Advisers, Llc

$1.8M87.6K0.00%+74.7%
RHUMBLINE ADVISERS

Rhumbline Advisers

$1.6M80.5K0.00%-3.9%

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