QSI institutional holders

QUANTUM SI INC · 13F, 2026Q2

Managers holding141
Shares held52,890,858
Reported value$46.8m
Quarter flows27 new, 36 added, 57 trimmed, 43 exited

Top 25 holders

ManagerSharesValue% of manager's 13F
VANGUARD CAPITAL MANAGEMENT LLC7,578,208$6.7m0.0%
ARK Investment Management LLC7,167,738$6.3m0.0%
BlackRock, Inc.5,225,352$4.6m0.0%
Amova Asset Management Americas, Inc.3,885,230$3.5m0.0%
Sumitomo Mitsui Trust Group, Inc.3,885,230$3.4m0.0%
MILLENNIUM MANAGEMENT LLC3,131,726$2.8m0.0%
UBS Group AG2,561,897$2.3m0.0%
AQR CAPITAL MANAGEMENT LLC2,348,665$2.1m0.0%
GEODE CAPITAL MANAGEMENT, LLC2,236,526$2.0m0.0%
JANE STREET GROUP, LLC2,142,735$1.9m0.0%
SUSQUEHANNA INTERNATIONAL GROUP, LLP1,116,750$988,3240.0%
VANGUARD FIDUCIARY TRUST CO1,116,683$988,2640.0%
STATE STREET CORP890,741$788,3060.0%
Fosun International Ltd743,935$658,3820.0%
RENAISSANCE TECHNOLOGIES LLC553,871$490,1760.0%
VANGUARD PORTFOLIO MANAGEMENT LLC497,098$439,9320.0%
GOLDMAN SACHS GROUP INC476,288$421,5150.0%
NORTHERN TRUST CORP450,531$398,7200.0%
Invesco Ltd.443,929$392,8770.0%
BNP PARIBAS FINANCIAL MARKETS398,598$352,7590.0%
IEQ CAPITAL, LLC350,816$310,4720.0%
Aster Capital Management (DIFC) Ltd344,510$304,8910.1%
MORGAN STANLEY323,482$286,2820.0%
IQ EQ FUND MANAGEMENT (IRELAND) Ltd321,134$284,2040.0%
Knollwood Investment Advisory, LLC300,000$265,5000.0%

Every holder, line by line, and the full history since 2013: yf.Client().holders("QSI"). QSI price history · All 13F data

Get a free API keySee history bundlesDownload free samples