Who Owns Quantum-Si incorporated (QSI)?Hedge Fund & Institutional Holders

$0.94-0.04 (-3.94%)HealthcareNASDAQ

Institutional Holders

50

as of Q4 2025

Total Institutional Value

$9.24980007723516e+128T

% of Float Held

4.704799251998562e+281%

QoQ Change in Holders

+15 / -2

Price History

$0.63$1.55$2.46$3.38$4.29Sep 24Jun 25Mar 26

QSI — Biggest New Institutional Buyers This Quarter

FundActionShares AddedValue Added
Sumitomo Mitsui Trust Group, Inc.New Position+4.7M+$5.2M
IQ EQ FUND MANAGEMENT (IRELAND) LtdNew Position+254K+$279K
Virtu Financial LLCNew Position+238K+$262K
Verdence Capital Advisors LLCNew Position+188K+$206K
Sanctuary Advisors, LLCNew Position+152K+$205K
Leonteq Securities AGNew Position+156K+$157K
Green Alpha Advisors, LLCNew Position+52K+$56K
Scientech Research LLCNew Position+46K+$50K
Red Wave Investments LLCNew Position+37K+$40K
JTC Employer Solutions Trustee LtdNew Position+35K+$38K
SBI Securities Co., Ltd.New Position+34K+$37K
China Universal Asset Management Co., Ltd.New Position+32K+$35K
SG Americas Securities, LLCNew Position+29K+$32K
Wealth Management Associates, Inc.New Position+27K+$29K
Curbstone Financial Management CorpNew Position+24K+$26K

QSI — Institutions Reducing or Closing Positions

FundActionShares SoldValue Sold
ARK Investment Management LLCDecreased-602K-$10.7B
Amova Asset Management Americas, Inc.Decreased-527K-$7.4B
MILLENNIUM MANAGEMENT LLCDecreased-2.5M-$3.8B
NORTHERN TRUST CORPDecreased-115K-$3.3B
JANE STREET GROUP, LLCDecreased-506K-$2.3B
Squarepoint Ops LLCClosed Position-613K-$865.0M
ROYAL BANK OF CANADADecreased-528K-$750.0M
GOLDMAN SACHS GROUP INCDecreased-327-$545.9M
GROUP ONE TRADING LLCDecreased-132K-$532.4M
BANK OF AMERICA CORP /DE/Decreased-90K-$490.7M
RHUMBLINE ADVISERSDecreased-26K-$310.1M
Pathstone Holdings, LLCClosed Position-184K-$259.3M
Shay Capital LLCDecreased-5K-$217.8M
AlphaCore Capital LLCDecreased-54K-$149.1M
INTECH INVESTMENT MANAGEMENT LLCDecreased-9K-$105.4M

Top Institutional Holders(Q4 2025)

#FundSharesValue% of PortfolioType
1VANGUARD GROUP INC8,408,954$9.2M0.00%Share
2BlackRock, Inc.7,464,863$8.0M0.00%Share
3ARK Investment Management LLC7,021,571$7.7M0.05%Share
4Sumitomo Mitsui Trust Group, Inc.4,690,720$5.2M0.00%Share
5Amova Asset Management Americas, Inc.4,690,720$5.1M0.06%Share
6BlackRock, Inc.4,621,549$5.0M0.00%Share
7STATE STREET CORP3,562,721$3.0M0.00%Share
8GEODE CAPITAL MANAGEMENT, LLC3,565,610$3.0M0.00%Share
9SUSQUEHANNA INTERNATIONAL GROUP, LLP2,327,785$2.0M0.00%Share
10CITADEL ADVISORS LLC2,676,097$2.0M0.00%Share
11NORTHERN TRUST CORP2,180,703$2.0M0.00%Share
12UBS Group AG1,368,969$1.5M0.00%Share
13VANGUARD GROUP INC1,113,311$1.2M0.00%Share
14TWO SIGMA INVESTMENTS, LP1,384,181$1.0M0.00%Share
15Fosun International Ltd743,935$818K0.19%Share
16GROUP ONE TRADING LLC435,000$478K0.00%Call
17Invesco Ltd.352,843$388K0.00%Share
18IMC-Chicago, LLC337,500$371K0.00%Call
19IMC-Chicago, LLC317,300$349K0.00%Put
20IQ EQ FUND MANAGEMENT (IRELAND) Ltd253,895$279K0.02%Share
21GROUP ONE TRADING LLC245,801$270K0.00%Share
22Virtu Financial LLC238,379$262K0.01%Share
23Verdence Capital Advisors LLC187,805$206K0.01%Share
24Shay Capital LLC149,132$164K0.02%Share
25VANGUARD GROUP INC84,757$93K0.00%Share
26Sanctuary Advisors, LLC36,337$71K0.00%Share
27Green Alpha Advisors, LLC51,528$56K0.05%Share
28GROUP ONE TRADING LLC49,400$54K0.00%Put
29Scientech Research LLC45,915$50K0.03%Share
30UBS Group AG44,647$49K0.00%Share
31Sanctuary Advisors, LLC42,413$46K0.00%Share
32Sanctuary Advisors, LLC36,782$44K0.00%Share
33Sanctuary Advisors, LLC36,782$44K0.00%Share
34Red Wave Investments LLC37,000$40K0.01%Share
35JTC Employer Solutions Trustee Ltd34,540$38K0.00%Share
36UBS Group AG34,886$38K0.00%Share
37SBI Securities Co., Ltd.34,163$37K0.00%Share
38China Universal Asset Management Co., Ltd.31,865$35K0.00%Share
39Leonteq Securities AG25,000$35K0.00%Share
40SG Americas Securities, LLC29,106$32K0.00%Share
41Leonteq Securities AG25,000$30K0.00%Share
42Wealth Management Associates, Inc.26,950$29K0.01%Share
43Invesco Ltd.24,665$27K0.00%Share
44Caitong International Asset Management Co., Ltd25,194$27K0.07%Share
45Invesco Ltd.25,313$27K0.00%Share
46HBW ADVISORY SERVICES LLC24,163$26K0.00%Share
47Curbstone Financial Management Corp24,000$26K0.00%Share
48Capital Investment Advisory Services, LLC20,000$22K0.00%Share
49Leonteq Securities AG11,300$22K0.00%Share
50Leonteq Securities AG11,000$21K0.00%Share

QSI Institutional Ownership History

QuarterHoldersTotal ValueChange
Q4 2025132$59.5M+47
Q3 202585$80.9B-30
Q2 2025115$110.3B-19
Q1 2025134$69.2B+25
Q4 2024109$178.0B+20
Q3 202489$17.8T+6
Q2 202483$14.0T+6
Q1 202477$25.4T—

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As of Q4 2025, 50 institutional investors hold QSI (Quantum-Si incorporated). The largest holder is VANGUARD GROUP INC with $9.2M in shares. This quarter, 15 institutions opened new positions and 2 closed their positions.

Frequently Asked Questions

How many hedge funds own QSI?

As of Q4 2025, 50 institutional investors report holding QSI (Quantum-Si incorporated) in their 13F filings.

Who is the largest institutional holder of QSI?

The largest institutional holder of QSI is VANGUARD GROUP INC with $9.2M in shares.

Is institutional ownership of QSI increasing or decreasing?

This quarter, 15 institutions opened new positions in QSI and 2 closed their positions.