QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

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

InstitutionSharesValue ($000)
BlackRock, Inc.13,054,057$14,359
VANGUARD GROUP INC9,607,022$10,568
ARK Investment Management LLC7,021,571$7,724
Sumitomo Mitsui Trust Holdings, Inc.4,690,720$5,160
Nikko Asset Management Americas, Inc.4,690,720$5,113
GEODE CAPITAL MANAGEMENT, LLC4,114,375$4,527
STATE STREET CORP3,562,721$3,919
CITADEL ADVISORS LLC2,676,097$2,944
SUSQUEHANNA INTERNATIONAL GROUP, LLP2,327,785$2,561
NORTHERN TRUST CORP2,207,936$2,429
UBS Group AG1,449,512$1,594
TWO SIGMA INVESTMENTS, LP1,384,181$1,523
JANE STREET GROUP, LLC1,104,033$1,214
Fosun International Ltd743,935$818
CHARLES SCHWAB INVESTMENT MANAGEMENT INC468,174$515
XTX Topco Ltd461,982$508
Nuveen, LLC447,519$492
Bank of New York Mellon Corp406,291$447
Invesco Ltd.402,821$443
MORGAN STANLEY399,994$440
GOLDMAN SACHS GROUP INC386,824$426
Knollwood Investment Advisory, LLC300,000$330
Quadrature Capital Ltd276,889$305
ALLIANCEBERNSTEIN L.P.272,180$299
BARCLAYS PLC269,415$296
BRIDGEWAY CAPITAL MANAGEMENT, LLC261,100$287
BANK OF AMERICA CORP /DE/258,445$284
IQ EQ FUND MANAGEMENT (IRELAND) Ltd253,895$279
GROUP ONE TRADING, L.P.245,801$270
Virtu Financial LLC238,379$0
RHUMBLINE ADVISERS193,595$213
MILLENNIUM MANAGEMENT LLC191,791$211
Verdence Capital Advisors LLC187,805$207
WELLS FARGO & COMPANY/MN176,132$194
Shay Capital LLC149,132$164
DEUTSCHE BANK AG\119,028$131
HRT FINANCIAL LP104,292$0
JONES FINANCIAL COMPANIES LLLP98,900$109
FMR LLC97,925$108
PRICE T ROWE ASSOCIATES INC /MD/96,486$0
LOS ANGELES CAPITAL MANAGEMENT LLC93,010$189
AQR CAPITAL MANAGEMENT LLC86,689$95
SIMPLEX TRADING, LLC80,507$89
JPMORGAN CHASE & CO76,909$85
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.72,970$80
INTECH INVESTMENT MANAGEMENT LLC65,636$72
Mariner, LLC56,880$63
Green Alpha Advisors, LLC51,528$57
AlphaCore Capital LLC49,350$54
MANUFACTURERS LIFE INSURANCE COMPANY, THE48,372$53
Police & Firemen's Retirement System of New Jersey46,170$51
Scientech Research LLC45,915$51
Sanctuary Advisors, LLC42,413$47
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM41,282$45
Caitong International Asset Management Co., Ltd37,964$42
Cambridge Investment Research Advisors, Inc.37,767$0
ProShare Advisors LLC37,341$41
Red Wave Investments LLC37,000$41
BNP PARIBAS ARBITRAGE, SA36,276$40
CAPTRUST FINANCIAL ADVISORS34,603$38
JTC Employer Solutions Trustee Ltd34,540$0
MetLife Investment Management, LLC34,222$38
SBI Securities Co., Ltd.34,163$38
SEI INVESTMENTS CO33,103$36
Tower Research Capital LLC (TRC)32,595$36
China Universal Asset Management Co., Ltd.31,865$35
DIMENSIONAL FUND ADVISORS LP31,320$34
SG Americas Securities, LLC29,106$0
COMMONWEALTH EQUITY SERVICES, LLC27,960$31
Voya Investment Management LLC27,246$30
Wealth Management Associates, Inc.26,950$30
Russell Investments Group, Ltd.26,893$30
NEUBERGER BERMAN GROUP LLC26,820$30
NEW YORK STATE COMMON RETIREMENT FUND26,084$29
LPL Financial LLC25,217$28
Leonteq Securities AG25,000$28
HBW ADVISORY SERVICES LLC24,163$27
Curbstone Financial Management Corp24,000$26
Vanguard Personalized Indexing Management, LLC23,799$26
Atom Investors LP21,995$24
Capital Investment Advisory Services, LLC20,000$22
VICTORY CAPITAL MANAGEMENT INC19,797$22
CITIGROUP INC19,776$22
BALYASNY ASSET MANAGEMENT L.P.19,300$21
Blueshift Asset Management, LLC17,442$19
Kovack Advisors, Inc.16,800$18
Stratos Wealth Advisors, LLC15,036$17
Graham Capital Management, L.P.14,422$16
Ameritas Investment Partners, Inc.14,401$16
Flagship Private Wealth, LLC14,158$16
NewEdge Advisors, LLC14,042$15
Procyon Advisors, LLC13,671$15
EWA, LLC13,632$15
Legal & General Group Plc12,860$14
McAdam, LLC12,329$14
XPONANCE, INC.11,824$13
State of Wyoming11,089$12
CIBC WORLD MARKETS CORP10,392$11
Cresset Asset Management, LLC10,207$11
Kestra Advisory Services, LLC10,090$11
32 other institutions121,623$116
Total (132 institutions)67,457,974$73,633