SIMPLEX TRADING, LLC - QUANTUM SI INC ownership

QUANTUM SI INC's ticker is QSI and the CUSIP is 74765K105. A total of 76 filers reported holding QUANTUM SI INC in Q3 2021. The put-call ratio across all filers is 0.53 and the average weighting 0.2%.

Quarter-by-quarter ownership
SIMPLEX TRADING, LLC ownership history of QUANTUM SI INC
ValueSharesWeighting
Q2 2023$16
+77.8%
9,322
+76.6%
0.00%
Q1 2023$9
-73.5%
5,279
-72.0%
0.00%
Q4 2022$34
-100.0%
18,847
-27.2%
0.00%
Q3 2021$312,000
-6.6%
25,880
-5.2%
0.00%
Q2 2021$334,00027,2900.00%
Other shareholders
QUANTUM SI INC shareholders Q3 2021
NameSharesValueWeighting ↓
Foresite Capital Management V, LLC 2,342,061$19,533,0006.07%
Foresite Capital Management IV, LLC 4,463,619$37,227,0005.48%
Glenview Capital Management 6,000,000$50,040,0000.91%
Neumann Advisory Hong Kong Ltd 492,733$4,1090.73%
Fosun International Ltd 743,936$6,204,0000.32%
Clearline Capital LP 377,897$3,152,0000.30%
ARK Investment Management 12,698,381$105,904,0000.25%
ASSET MANAGEMENT CORP /IL/ /ADV 59,444$496,0000.25%
DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) 1,400,000$11,676,0000.23%
Rubric Capital Management LP 672,385$5,608,0000.16%
View complete list of QUANTUM SI INC shareholders