QuantumSi Inc (QSI) Ownership

1.76 ↓0.06 (-3.30%)
As of December 31, 1969, 7:00pm EST.

Institutional Ownership

BlackRock Inc is the biggest individual institutional holder of QuantumSi Inc (QSI), owning a total of 9.4 million shares. Combined, the top 49 institutional holders of QSI own 46.25% of the company with a total of 78.1 million shares.

In the latest ownership report on March 31st 2025, the top 49 institutional holders increased their combined ownership of QSI by 4.2 million shares. 12 institutions bought 8,712,658 total additional shares and increased their ownership by an average of 55.11%. However 7 institutions sold 4,544,874 total shares and decreased their ownership by an average of 28.43%.

Overall this is a positive sign as the number of shares owned by the top 20 institutional holders of QuantumSi increased by a net total of 4,167,784 in the latest quarter.

Institution Ownership Chart

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Latest Institutional Ownership Changes

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
BlackRock Inc5.145%11.882%9,440,2431,002,5962025-03-31
ARK Investment Management LLC4.749%-1.527%8,713,501-135,1492025-03-31
Vanguard Group Inc3.756%25.513%6,892,8621,401,1092025-03-31
Nikko Asset Management Americas Inc3.167%-2.578%5,811,430-153,7782025-03-31
Sumitomo Mitsui Trust Group Inc3.167%-2.578%5,811,430-153,7782025-03-31
Millennium Management LLC2.144%0.000%3,934,2853,934,2852025-03-31
Geode Capital Management, LLC1.632%26.453%2,994,888626,5122025-03-31
State Street Corp1.337%2.041%2,454,10649,0872025-03-31
Northern Trust Corp0.557%21.515%1,022,118180,9722025-03-31
Renaissance Technologies Corp0.475%59.968%871,756326,8002025-03-31
Two Sigma Investments LLC0.445%435.079%816,975664,2922025-03-31
Susquehanna International Group, LLP0.434%-20.535%796,930-205,9432025-03-31
Fosun International Ltd0.405%0.000%743,93502025-03-31
UBS Group AG0.245%-24.055%449,682-142,4302025-03-31
Goldman Sachs Group Inc0.241%-55.962%441,314-560,8162025-03-31
XTX Topco Ltd0.201%50.240%368,968123,3832025-03-31
Charles Schwab Investment Management Inc0.200%19.292%367,44459,4232025-03-31
Nuveen, LLC0.174%0.000%319,100319,1002025-03-31
Knollwood Investment Advisory LLC0.164%0.000%300,00002025-03-31
Bank of New York Mellon Corp0.161%9.303%294,90625,0992025-03-31
Morgan Stanley - Brokerage Accounts0.157%-91.740%287,488-3,192,9802025-03-31

Top Institutions

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
BlackRock Inc5.145%11.882%9,440,2431,002,5962025-03-31
ARK Investment Management LLC4.749%-1.527%8,713,501-135,1492025-03-31
Sumitomo Mitsui Trust Holdings Inc5.523%-2.376%7,863,161-191,3422024-06-30
Vanguard Group Inc3.756%25.513%6,892,8621,401,1092025-03-31
Nikko Asset Management Americas Inc3.167%-2.578%5,811,430-153,7782025-03-31
Sumitomo Mitsui Trust Group Inc3.167%-2.578%5,811,430-153,7782025-03-31
Millennium Management LLC2.144%0.000%3,934,2853,934,2852025-03-31
Geode Capital Management, LLC1.632%26.453%2,994,888626,5122025-03-31
State Street Corp1.337%2.041%2,454,10649,0872025-03-31
Glenview Capital Management LLC1.705%-42.695%2,415,990-1,800,0002023-06-30
State Street Corporation1.518%-2.264%2,159,809-50,0282024-03-31
Foresite Capital Management IV, LLC1.251%0.000%1,771,24902023-03-31
Nomura Holdings Inc1.252%0.000%1,751,5441,751,5442022-12-31
Northern Trust Corp0.557%21.515%1,022,118180,9722025-03-31
Jacobs Levy Equity Management, Inc.0.593%-0.355%939,419-3,3432024-09-30
Foresite Capital Management V, LLC0.652%0.000%924,40402023-06-30
Renaissance Technologies Corp0.475%59.968%871,756326,8002025-03-31
Two Sigma Investments LLC0.445%435.079%816,975664,2922025-03-31
Deerfield Management Co0.563%0.000%797,500797,5002023-06-30
Susquehanna International Group, LLP0.434%-20.535%796,930-205,9432025-03-31
Fosun International Ltd0.405%0.000%743,93502025-03-31
Security Benefit Life Insurance Co0.505%-82.799%715,479-3,443,9472023-03-31
Rubric Capital Management LP0.475%0.000%672,38502022-12-31
Foresite Capital Opportunity Management V, LLC0.453%0.000%633,62602022-09-30
UBS Group AG0.245%-24.055%449,682-142,4302025-03-31
Goldman Sachs Group Inc0.241%-55.962%441,314-560,8162025-03-31
HRT FINANCIAL LLC0.271%500.241%378,494315,4372022-06-30
GSA Capital Partners LLP0.204%233.234%374,278261,9612024-12-31
XTX Topco Ltd0.201%50.240%368,968123,3832025-03-31
Charles Schwab Investment Management Inc0.200%19.292%367,44459,4232025-03-31
Nuveen Asset Management, LLC0.174%-43.530%319,100-245,9802024-12-31
Nuveen, LLC0.174%0.000%319,100319,1002025-03-31
SIMPLEX TRADING, LLC0.168%1,057.660%306,769280,2702024-12-31
JANE STREET GROUP, LLC0.214%2,389.410%304,056291,8422024-06-30
Knollwood Investment Advisory LLC0.164%0.000%300,00002025-03-31
Bridgeway Capital Management, LLC0.162%-27.195%296,100-110,6002024-12-31
Bank of New York Mellon Corp0.161%9.303%294,90625,0992025-03-31
General American Investors Company Inc0.207%0.000%294,35002024-06-30
General American Investors Co Inc0.186%0.000%294,35002024-09-30
Morgan Stanley - Brokerage Accounts0.157%-91.740%287,488-3,192,9802025-03-31
Jane Street Group LLC0.162%-15.578%256,689-47,3672024-09-30
Guggenheim Capital LLC0.153%-4.272%242,454-10,8202024-09-30
Citadel Advisors Llc0.159%0.000%226,300226,3002024-06-30
Clearline Capital LP0.150%0.000%211,90002023-03-31
Bank of America Corp0.134%33.226%189,82247,3412023-12-31
Amvescap Plc.0.133%4.877%187,9348,7402023-12-31
Neumann Advisory Hong Kong Ltd0.117%0.000%166,19802024-03-31
Putnam Investments LLC0.111%0.000%157,589157,5892023-09-30
Rhumbline Advisers0.102%0.321%145,1994652024-06-30

Mutual Fund Ownership

ARK Genomic Revolution is the biggest individual fund holder of QuantumSi Inc (QSI), owning a total of 8.6 million shares. Combined, the top 40 mutual fund holders of QSI own 28.11% of the company with a total of 49.4 million shares.

In the latest ownership report on June 30th 2025, the top 40 fund holders increased their combined ownership of QSI by 24 thousand shares. 5 funds bought 121,738 total additional shares and increased their ownership by an average of 7.31%. However 2 funds sold 98,171 total shares and decreased their ownership by an average of 1.57%.

Overall this is a positive sign as the number of shares owned by the top 20 mutual funds holding QuantumSi increased by a net total of 23,567 in the latest report.

Mutual Funds Chart

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Latest Mutual Fund Ownership Changes

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
ARK Genomic Revolution ETF4.239%-1.174%7,777,622-92,3802025-06-30
iShares Russell 2000 ETF1.935%0.699%3,551,04124,6412025-06-30
iShares Russell 2000 Value ETF0.683%0.361%1,254,0194,5102025-06-30
State St Russell Sm/Mid Cp® Indx SL Cl I0.387%0.000%710,85502025-06-30
iShares Core S&P Total US Stock Mkt ETF0.213%0.049%391,3861902025-06-30
State St Russell Sm Cap® Indx SL Cl I0.195%0.000%357,00202025-06-30
NT R2000 Index Fund - NL0.186%17.836%341,32351,6642025-06-30
iShares Micro-Cap ETF0.173%0.000%316,53902025-06-30
Extended Equity Market Fund K0.158%-1.957%290,124-5,7912025-06-30
NT R2000 Index Fund - DC - NL - 30.148%17.603%272,13240,7332025-06-30

Top Mutual Funds

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
ARK Genomic Revolution4.672%-1.752%8,572,132-152,8182025-03-31
ARK Genomic Revolution ETF4.239%-1.174%7,777,622-92,3802025-06-30
Nikko AM ARK Pstv Chg Innovt P JPY Acc2.495%0.000%4,578,05202025-05-31
iShares Russell 2000 ETF1.935%0.699%3,551,04124,6412025-06-30
Vanguard Total Stock Mkt Idx Inv1.645%0.000%3,017,58602025-05-31
Vanguard Instl Ttl Stck Mkt Idx Tr2.126%2.528%3,012,87074,2782023-03-31
Vanguard Institutional Extnd Mkt Idx Tr1.246%0.000%2,287,15802025-05-31
Nikko Gbl All Biological Genome Eq MF1.101%-14.556%2,016,144-343,4562024-06-07
iShares Russell 2000 Value ETF0.683%0.361%1,254,0194,5102025-06-30
Fidelity Small Cap Index0.672%2.441%1,233,66329,3902025-04-30
Vanguard Extended Market Index Investor0.848%0.000%1,202,08102023-08-31
Fidelity® Small Cap Index0.693%2.470%981,67623,6672023-10-31
Fidelity Extended Market Index0.410%-0.445%752,913-3,3662025-05-31
State St Russell Sm/Mid Cp® Indx NL Cl C0.388%0.000%710,85502025-04-30
State St Russell Sm/Mid Cp® Indx SL Cl I0.387%0.000%710,85502025-06-30
Vanguard US Momentum Factor ETF0.357%7.685%655,74946,8002025-03-31
Vanguard Russell 2000 ETF0.327%0.910%599,3785,4062025-05-31
Fidelity® Extended Market Index0.356%7.309%504,06734,3312023-11-30
State St Russell Sm Cap® Indx NL Cl C0.277%0.000%392,50202023-09-30
iShares Core S&P Total US Stock Mkt ETF0.213%0.049%391,3861902025-06-30
State St Russell Sm Cap® Indx SL Cl I0.195%0.000%357,00202025-06-30
Vanguard Health Care ETF0.242%-0.227%343,680-7832024-04-30
NT R2000 Index Fund - NL0.186%17.836%341,32351,6642025-06-30
iShares Micro-Cap ETF0.173%0.000%316,53902025-06-30
Schwab Small Cap Index0.168%6.174%308,71117,9512025-05-31
BlackRock Advantage Small Cap Core Instl0.215%23.864%306,14458,9822024-07-31
Extended Equity Market Fund K0.158%-1.957%290,124-5,7912025-06-30
Bridgeway Ultra-Small Company Market0.158%-25.641%290,000-100,0002024-12-31
NT R2000 Index Fund - DC - NL - 30.148%17.603%272,13240,7332025-06-30
Fidelity Total Market Index0.141%0.000%258,71302025-05-31
CREF Stock R10.172%0.000%245,98002024-08-31
NT R2000 Value Index Fund - NL0.129%-7.651%235,738-19,5312024-12-31
NT R2000 Index Fund - DC - NL - 20.126%21.629%231,39941,1492025-03-31
BlackRock Extended Mkt Composite0.152%0.843%214,9201,7962023-09-30
iShares Russell 2000 Small-Cap Idx Instl0.113%28.831%206,73046,2642025-04-30
NT R2000 Value Index Fund - L0.112%0.000%205,94002024-12-31
Northern Trust Russell 2000 Value Index0.112%0.000%205,94002024-12-31
Fidelity Series Total Market Index0.106%41.389%193,45156,6292025-03-31
SPDR® Russell 2000 US Small Cap ETF0.106%-10.420%193,277-22,4812025-03-31
BlackRock Extended Equity Market K0.124%-0.913%172,949-1,5932022-09-30

Discussions

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rikishiiiii

$QSI this is just going to go up forever

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