AMPHASTAR PHARMACEUTICALS IN

Ticker: AMPH CUSIP: 03209R103 Class: Common Stock

Note: Option positions (PUT/CALL) are excluded.

InstitutionSharesValue ($000)
BlackRock, Inc.5,462,015$146,273
VANGUARD GROUP INC2,608,158$69,846
TD Asset Management Inc1,963,052$52,571
DIMENSIONAL FUND ADVISORS LP1,799,685$48,196
STATE STREET CORP1,531,786$41,021
FULLER & THALER ASSET MANAGEMENT, INC.1,394,463$37,344
MARSHALL WACE, LLP1,237,284$33,134
Epoch Investment Partners, Inc.1,126,585$30,170
Boston Trust Walden Corp1,087,266$29,117
GEODE CAPITAL MANAGEMENT, LLC886,825$23,753
AMERICAN CENTURY COMPANIES INC665,336$17,818
MORGAN STANLEY591,631$15,844
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP559,426$14,981
D. E. Shaw & Co., Inc.557,066$14,918
GOLDMAN SACHS GROUP INC556,709$14,909
RENAISSANCE TECHNOLOGIES LLC544,700$14,587
Invesco Ltd.501,404$13,428
SYSTEMATIC FINANCIAL MANAGEMENT LP435,580$11,665
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC402,563$10,781
NORTHERN TRUST CORP371,391$9,946
ROYCE & ASSOCIATES LP352,297$9,435
CHARLES SCHWAB INVESTMENT MANAGEMENT INC350,707$9,392
BRIDGEWAY CAPITAL MANAGEMENT, LLC323,549$8,665
Clark Capital Management Group, Inc.317,482$8,502
VICTORY CAPITAL MANAGEMENT INC305,161$8,172
MILLENNIUM MANAGEMENT LLC290,673$7,784
Bank of New York Mellon Corp259,061$6,938
UBS Group AG256,624$6,872
Bridge City Capital, LLC235,485$6,306
VOLORIDGE INVESTMENT MANAGEMENT, LLC231,305$6,194
CITADEL ADVISORS LLC228,724$6,125
PRINCIPAL FINANCIAL GROUP INC217,974$5,837
JANE STREET GROUP, LLC217,537$5,826
DENALI ADVISORS LLC211,765$5,671
Pacer Advisors, Inc.177,744$4,760
Empowered Funds, LLC165,907$4,443
JPMORGAN CHASE & CO158,644$4,248
FIRST TRUST ADVISORS LP140,310$3,758
AMERIPRISE FINANCIAL INC133,715$3,581
LAM GROUP, INC.130,800$3,503
NORDEA INVESTMENT MANAGEMENT AB129,144$3,460
BANK OF AMERICA CORP /DE/128,174$3,433
NEW YORK STATE COMMON RETIREMENT FUND125,968$3,373
ALGERT GLOBAL LLC125,130$3
Public Sector Pension Investment Board122,505$3,281
RICE HALL JAMES & ASSOCIATES, LLC121,176$3,245
BNP PARIBAS ARBITRAGE, SA120,893$3,238
BESSEMER GROUP INC120,890$3
Trexquant Investment LP113,673$3,044
Qube Research & Technologies Ltd111,439$2,984
LSV ASSET MANAGEMENT110,300$3
Brandywine Global Investment Management, LLC105,417$2,823
TWO SIGMA INVESTMENTS, LP98,678$2,643
SG Americas Securities, LLC93,515$3
Quantedge Capital Pte Ltd91,700$2,456
Legal & General Group Plc90,730$2,430
O'SHAUGHNESSY ASSET MANAGEMENT, LLC87,183$2,335
RAYMOND JAMES FINANCIAL INC84,454$2,262
RHUMBLINE ADVISERS82,390$2,206
BALYASNY ASSET MANAGEMENT L.P.77,467$2,075
Nuveen, LLC76,101$2,038
BARCLAYS PLC75,319$2,017
Swiss National Bank72,600$1,944
AQR CAPITAL MANAGEMENT LLC67,652$1,812
Susquehanna Portfolio Strategies, LLC66,969$1,793
CX Institutional64,123$2
INTECH INVESTMENT MANAGEMENT LLC63,232$1,693
CIBC WORLD MARKET INC.62,192$1,666
ALLIANCEBERNSTEIN L.P.60,630$1,624
SteelPeak Wealth, LLC55,695$1,492
UBS ASSET MANAGEMENT AMERICAS INC55,232$1,479
ASSETMARK, INC54,359$1,456
Creative Planning51,664$1,384
XTX Topco Ltd48,607$1,302
PRUDENTIAL FINANCIAL INC47,203$1,264
WELLS FARGO & COMPANY/MN45,302$1,213
SummerHaven Investment Management, LLC38,200$1,023
PRICE T ROWE ASSOCIATES INC /MD/36,796$1
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM35,798$959
Polaris Capital Management, LLC35,532$952
Campbell & CO Investment Adviser LLC30,682$822
GREAT WEST LIFE ASSURANCE CO /CAN/30,216$1
CANADA PENSION PLAN INVESTMENT BOARD29,800$798
DEUTSCHE BANK AG\29,557$792
Universal- Beteiligungs- und Servicegesellschaft mbH29,104$785
ENVESTNET ASSET MANAGEMENT INC28,823$772
Illumine Investment Management, LLC28,328$759
CITIGROUP INC28,280$757
State of Alaska, Department of Revenue27,916$1
Gotham Asset Management, LLC27,802$745
Freestone Grove Partners LP27,593$739
Arkadios Wealth Advisors26,303$704
FRANKLIN RESOURCES INC26,045$697
Advisor OS, LLC25,405$680
Thrivent Financial for Lutherans24,313$1
FEDERATED HERMES, INC.23,537$630
NEW YORK STATE TEACHERS RETIREMENT SYSTEM22,977$1
MetLife Investment Management, LLC21,075$564
Illinois Municipal Retirement Fund20,913$560
DekaBank Deutsche Girozentrale20,848$1
132 other institutions779,917$18,824
Total (232 institutions)33,551,855$878,357