VICOR CORP

Ticker: VICR CUSIP: 925815102 Class: Common Stock

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

InstitutionSharesValue ($000)
JPMORGAN CHASE & CO4,016,881$440,250
BlackRock, Inc.3,572,083$391,500
VANGUARD GROUP INC2,534,534$277,785
STATE STREET CORP836,955$91,730
NEEDHAM INVESTMENT MANAGEMENT LLC569,775$62,447
GEODE CAPITAL MANAGEMENT, LLC562,887$61,703
DIMENSIONAL FUND ADVISORS LP556,870$61,043
PRICE T ROWE ASSOCIATES INC /MD/439,820$48
MANUFACTURERS LIFE INSURANCE COMPANY, THE432,189$47,368
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP374,088$41,000
MORGAN STANLEY358,177$39,256
ASHFORD CAPITAL MANAGEMENT INC353,856$38,783
AWM Investment Company, Inc.333,180$36,517
PINNACLE ASSOCIATES LTD250,085$27,409
Herald Investment Management Ltd245,000$26,850
Nuveen, LLC234,144$25,662
COLRAIN CAPITAL LLC226,260$24,798
NORTHERN TRUST CORP224,000$24,550
CHARLES SCHWAB INVESTMENT MANAGEMENT INC221,428$24,269
FMR LLC211,340$23,163
Invesco Ltd.148,659$16,293
GOLDMAN SACHS GROUP INC146,984$16,109
Arosa Capital Management LP135,000$14,796
Bank of New York Mellon Corp133,796$14,664
FIRST TRUST ADVISORS LP132,769$14,551
PRINCIPAL FINANCIAL GROUP INC108,661$11,909
MARSHALL WACE, LLP103,636$11,359
AMERIPRISE FINANCIAL INC94,753$10,385
JANUS HENDERSON GROUP PLC90,062$9,872
Bruce & Co., Inc.90,000$9,864
Alight Capital Management LP90,000$9,864
AQR CAPITAL MANAGEMENT LLC81,619$8,945
Public Sector Pension Investment Board78,641$8,619
BANK OF AMERICA CORP /DE/70,708$7,750
RAYMOND JAMES FINANCIAL INC64,956$7,119
WELLS FARGO & COMPANY/MN62,672$6,869
ACADIAN ASSET MANAGEMENT LLC62,061$7
RHUMBLINE ADVISERS61,957$6,790
PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C.61,096$6,696
Legal & General Group Plc58,287$6,388
UBS Group AG56,848$6,231
JACOBS LEVY EQUITY MANAGEMENT, INC56,459$6,188
TUDOR INVESTMENT CORP ET AL54,024$5,921
EAM Investors, LLC50,870$5,575
Portolan Capital Management, LLC48,721$5,340
Swiss National Bank45,832$5,023
PRUDENTIAL FINANCIAL INC44,538$4,881
CHAPIN DAVIS, INC.44,200$4,844
INTECH INVESTMENT MANAGEMENT LLC39,091$4,284
RICE HALL JAMES & ASSOCIATES, LLC38,761$4,248
UBS ASSET MANAGEMENT AMERICAS INC37,618$4,123
HARBOR INVESTMENT ADVISORY, LLC36,261$3,974
BARCLAYS PLC35,870$3,931
SUSQUEHANNA INTERNATIONAL GROUP, LLP35,449$3,885
OSAIC HOLDINGS, INC.35,302$3,869
NEW YORK STATE TEACHERS RETIREMENT SYSTEM34,450$4
GatePass Capital, LLC33,000$3,617
Andar Capital Management HK Ltd32,000$3,507
BESSEMER GROUP INC31,329$3
IRONWOOD INVESTMENT MANAGEMENT LLC31,158$3,415
ALGERT GLOBAL LLC29,980$3
BEACONLIGHT CAPITAL, LLC29,257$3,207
Waratah Capital Advisors Ltd.28,798$3,156
AMERICAN CENTURY COMPANIES INC28,229$3,094
IMC-Chicago, LLC26,652$2,921
Toroso Investments, LLC26,593$2,915
ALLIANCEBERNSTEIN L.P.25,810$2,829
Manatuck Hill Partners, LLC25,600$2,806
Qube Research & Technologies Ltd25,282$2,771
CITADEL ADVISORS LLC24,564$2,692
LPL Financial LLC24,462$2,681
Bouvel Investment Partners, LLC24,183$2,650
PANAGORA ASSET MANAGEMENT INC23,520$2,578
DEUTSCHE BANK AG\23,395$2,564
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM22,174$2,430
GREAT WEST LIFE ASSURANCE CO /CAN/19,348$2
Bridgewater Associates, LP19,094$2,093
SEI INVESTMENTS CO17,749$1,945
Voya Investment Management LLC16,860$1,848
SNOWWATER INVESTMENT PARTNERS, LLC16,023$1,756
ExodusPoint Capital Management, LP15,825$1,734
Thrivent Financial for Lutherans15,611$2
GSA CAPITAL PARTNERS LLP15,240$2
Convergence Investment Partners, LLC14,880$1,631
State of Tennessee, Department of Treasury14,615$2,304
Jump Financial, LLC14,100$1,545
Range Financial Group LLC14,026$1,537
State of Alaska, Department of Revenue13,443$1
Circle Wealth Management, LLC13,187$1,445
WINTON GROUP Ltd13,095$1,435
MetLife Investment Management, LLC12,943$1,419
Integrated Quantitative Investments LLC12,273$1,345
LOS ANGELES CAPITAL MANAGEMENT LLC11,318$1,035
DARK FOREST CAPITAL MANAGEMENT LP11,144$1,221
Illinois Municipal Retirement Fund10,995$1,205
CAXTON ASSOCIATES LLP10,763$1,180
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.10,660$1,168
Sandro Wealth Management LLC10,600$1,162
Louisiana State Employees Retirement System10,400$1,140
SIMON QUICK ADVISORS, LLC10,262$1,125
187 other institutions534,045$55,096
Total (287 institutions)20,518,648$2,173,521