AlphaMark Advisors, LLC - RUBICON TECHNOLOGY INC ownership

RUBICON TECHNOLOGY INC's ticker is RBCN and the CUSIP is 78112T206. A total of 20 filers reported holding RUBICON TECHNOLOGY INC in Q4 2021. The put-call ratio across all filers is - and the average weighting 0.0%.

Quarter-by-quarter ownership
AlphaMark Advisors, LLC ownership history of RUBICON TECHNOLOGY INC
ValueSharesWeighting
Q3 2022$1,000
-80.0%
5000.0%0.00%
-100.0%
Q2 2022$5,0000.0%5000.0%0.00%0.0%
Q1 2022$5,000
+25.0%
5000.0%0.00%
+100.0%
Q4 2021$4,0005000.00%
Other shareholders
RUBICON TECHNOLOGY INC shareholders Q4 2021
NameSharesValueWeighting ↓
Bandera Partners LLC 258,256$2,337,0001.22%
Marquette Asset Management, LLC 22,385$203,0000.05%
Ariel Investments 57,886$524,0000.01%
Renaissance Technologies 109,999$995,0000.00%
WELLS FARGO & COMPANY/MN 14$00.00%
NORTHERN TRUST CORP 874$8,0000.00%
CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0$00.00%
GROUP ONE TRADING, L.P. 1$00.00%
GEODE CAPITAL MANAGEMENT, LLC 11,566$104,0000.00%
MORGAN STANLEY 400$4,0000.00%
View complete list of RUBICON TECHNOLOGY INC shareholders