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.
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 |