Rubicon Technology, Inc. - RBCN

Detailed investor-level table based on 13F positions.
Early Q4 2022 data: only 2 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.

Shareholders (13F)

Quarter: Q3 2022 · Compare: Q2 2022
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
RENAISSANCE TECHNOLOGIES LLC History Reduced 90,671 194 0.0% 0.0% 1 -4,008 -4.23% Q3 2022 Nov 14, 2022
AMERIPRISE FINANCIAL INC History New 35,339 76 0.0% 2 +35,339 New Q3 2022 Nov 14, 2022
CITADEL ADVISORS LLC History New 21,412 46 0.0% 3 +21,412 New Q3 2022 Nov 14, 2022
MILLENNIUM MANAGEMENT LLC History New 10,529 23 0.0% 4 +10,529 New Q3 2022 Nov 14, 2022
GEODE CAPITAL MANAGEMENT, LLC History Reduced 10,419 22 0.0% 0.0% 5 -1,424 -12.02% Q3 2022 Nov 14, 2022
ADVISOR GROUP HOLDINGS, INC. History Reduced 6,979 15 0.0% 0.0% 6 -4,341 -38.35% Q3 2022 Nov 14, 2022
Tower Research Capital LLC (TRC) History Added to 5,237 11 0.0% 0.0% 7 +4,712 897.52% Q3 2022 Nov 10, 2022
MORGAN STANLEY History New 3,147 7 0.0% 8 +3,147 New Q3 2022 Nov 14, 2022
VANGUARD GROUP INC History Closed out 0 0 0.0% -72,664 -100.0% Q2 2022 Aug 12, 2022
UBS Group AG History Reduced 57 0 0.0% -623 -91.62% Q3 2022 Nov 10, 2022
CITIGROUP INC History Closed out 0 0 0.0% -363 -100.0% Q2 2022 Aug 10, 2022
JPMORGAN CHASE & CO History Closed out 0 0 0.0% -141 -100.0% Q2 2022 Aug 11, 2022
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO History New 82 0 +82 New Q3 2022 Nov 14, 2022
WELLS FARGO & COMPANY/MN History Reduced 11 0 -4 -26.67% Q3 2022 Nov 14, 2022
GROUP ONE TRADING, L.P. History No change 1 0 0 0.0% Q3 2022 Nov 09, 2022
Leonteq Securities AG History No change 147 0 0.0% 0 0.0% Q3 2022 Mar 26, 2026
Rockefeller Capital Management L.P. History No change 220 0 0.0% 0 0.0% Q3 2022 Nov 02, 2022