GT Biopharma, Inc. - GTBP
Detailed investor-level table based on 13F positions.
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | History | New | 451,875 | 184 | 0.0% | — | 1 | +451,875 | New | Q1 2026 | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 294,459 | 120 | 0.0% | 0.0% | 2 | +275,201 | 1429.02% | Q1 2026 | May 15, 2026 |
| VANGUARD FIDUCIARY TRUST CO | History | New | 225,938 | 92 | 0.0% | — | 3 | +225,938 | New | Q1 2026 | May 08, 2026 |
| Arax Advisory Partners | History | New | 93,627 | 38 | 0.0% | — | 4 | +93,627 | New | Q1 2026 | May 13, 2026 |
| CITADEL ADVISORS LLC | History | Reduced | 66,165 | 27 | 0.0% | 0.0% | 5 | -14,596 | -18.07% | Q1 2026 | May 15, 2026 |
| SeaCrest Wealth Management, LLC | History | No change | 50,000 | 20 | 0.0% | 0.0% | 6 | 0 | 0.0% | Q1 2026 | Apr 15, 2026 |
| UBS Group AG | History | Added to | 45,970 | 18 | 0.0% | — | 7 | +45,969 | 4596900.0% | Q1 2026 | May 05, 2026 |
| LPL Financial LLC | History | Added to | 30,382 | 12 | 0.0% | 0.0% | 8 | +19,750 | 185.76% | Q1 2026 | May 06, 2026 |
| TWO SIGMA SECURITIES, LLC | History | Added to | 31,796 | 12 | 0.0% | 0.0% | 9 | +19,262 | 153.68% | Q1 2026 | May 15, 2026 |
| Invst, LLC | History | New | 23,400 | 9 | 0.0% | — | 10 | +23,400 | New | Q1 2026 | May 13, 2026 |
| Keel Point, LLC | History | New | 20,768 | 8 | 0.0% | — | 11 | +20,768 | New | Q1 2026 | May 29, 2026 |
| Private Wealth Management Group, LLC | History | New | 20,000 | 8 | 0.0% | — | 15 | +20,000 | New | Q1 2026 | Apr 23, 2026 |
| OSAIC HOLDINGS, INC. | History | Added to | 21,000 | 8 | 0.0% | 0.0% | 13 | +19,000 | 950.0% | Q1 2026 | May 15, 2026 |
| Cerity Partners LLC | History | Added to | 20,023 | 8 | 0.0% | 0.0% | 12 | +5,023 | 33.49% | Q1 2026 | May 15, 2026 |
| Integrated Wealth Concepts LLC | History | No change | 20,006 | 8 | 0.0% | 0.0% | 14 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Virtu Financial LLC | History | New | 14,876 | 6 | 0.0% | — | 19 | +14,876 | New | Q1 2026 | May 14, 2026 |
| StoneX Group Inc. | History | New | 14,756 | 6 | 0.0% | — | 18 | +14,756 | New | Q1 2026 | May 14, 2026 |
| MORGAN STANLEY | History | Reduced | 16,599 | 6 | 0.0% | 0.0% | 17 | -2,000 | -10.75% | Q1 2026 | May 15, 2026 |
| WELLS FARGO & COMPANY/MN | History | No change | 16,037 | 6 | 0.0% | 0.0% | 16 | 0 | 0.0% | Q1 2026 | Jul 08, 2026 |
| AM INVESTMENT STRATEGIES LLC | History | No change | 15,000 | 6 | 0.0% | 0.0% | 20 | 0 | 0.0% | Q1 2026 | Apr 29, 2026 |
| Coston, McIsaac & Partners | History | No change | 17,092 | 6 | 0.0% | 0.0% | 21 | 0 | 0.0% | Q1 2026 | Apr 22, 2026 |
| Caitlin John, LLC | History | No change | 16,500 | 6 | 0.0% | 0.01% | 22 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| LaSalle St. Investment Advisors, LLC | History | New | 11,000 | 4 | 0.0% | — | 26 | +11,000 | New | Q1 2026 | May 08, 2026 |
| Verdence Capital Advisors LLC | History | Reduced | 12,000 | 4 | 0.0% | 0.0% | 25 | -1,000 | -7.69% | Q1 2026 | Apr 30, 2026 |
| PARSONS CAPITAL MANAGEMENT INC/RI | History | No change | 10,900 | 4 | 0.0% | 0.0% | 23 | 0 | 0.0% | Q1 2026 | Apr 15, 2026 |
| Prospera Financial Services Inc | History | No change | 11,996 | 4 | 0.0% | 0.0% | 24 | 0 | 0.0% | Q1 2026 | Apr 14, 2026 |
| BlackRock, Inc. | History | Reduced | 8,408 | 3 | 0.0% | 0.0% | 28 | -1 | -0.01% | Q1 2026 | May 13, 2026 |
| HBK Sorce Advisory LLC | History | No change | 10,000 | 3 | 0.0% | 0.0% | 27 | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| Allworth Financial LP | History | Added to | 4,501 | 1 | 0.0% | — | 30 | +4,500 | 450000.0% | Q1 2026 | May 14, 2026 |
| MassMutual Private Wealth & Trust, FSB | History | New | 3,000 | 1 | 0.0% | — | 29 | +3,000 | New | Q1 2026 | Apr 13, 2026 |
| West Financial Advisors, LLC | History | New | 2,500 | 1 | 0.0% | — | 31 | +2,500 | New | Q1 2026 | Apr 08, 2026 |
| NFSG Corp | History | No change | 3,750 | 1 | 0.0% | 0.0% | 32 | 0 | 0.0% | Q1 2026 | May 05, 2026 |
| Farther Finance Advisors, LLC | History | No change | 3,000 | 1 | 0.0% | 0.0% | 33 | 0 | 0.0% | Q1 2026 | Apr 07, 2026 |
| Scientech Research LLC | History | Closed out | 0 | 0 | — | 0.03% | — | -54,745 | -100.0% | Q1 2026 | May 15, 2026 |
| JANE STREET GROUP, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -26,016 | -100.0% | Q1 2026 | May 12, 2026 |
| HRT FINANCIAL LP | History | Closed out | 0 | 0 | — | 0.0% | — | -11,767 | -100.0% | Q1 2026 | May 14, 2026 |
| BANK OF MONTREAL /CAN/ | History | Closed out | 0 | 0 | — | 0.0% | — | -10,834 | -100.0% | Q1 2026 | May 13, 2026 |
| Advisory Services Network, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -10,000 | -100.0% | Q1 2026 | May 15, 2026 |
| WOLFF WIESE MAGANA LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -5,000 | -100.0% | Q1 2026 | Apr 13, 2026 |
| CITIGROUP INC | History | Closed out | 0 | 0 | — | 0.0% | — | -2,781 | -100.0% | Q1 2026 | May 11, 2026 |
| CIBC Private Wealth Group LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -2,000 | -100.0% | Q4 2025 | Feb 12, 2026 |
| Stone House Investment Management, LLC | History | New | 1,251 | 0 | — | — | — | +1,251 | New | Q1 2026 | Apr 22, 2026 |
| FMR LLC | History | New | 1,000 | 0 | — | — | — | +1,000 | New | Q1 2026 | May 15, 2026 |
| SWAN Capital LLC | History | Closed out | 0 | 0 | — | — | — | -1,000 | -100.0% | Q1 2026 | May 14, 2026 |
| Spire Wealth Management | History | Closed out | 0 | 0 | — | — | — | -994 | -100.0% | Q1 2026 | Apr 22, 2026 |
| ROYAL BANK OF CANADA | History | New | 126 | 0 | — | — | — | +126 | New | Q1 2026 | May 15, 2026 |
| Hilltop National Bank | History | New | 100 | 0 | — | — | — | +100 | New | Q1 2026 | Apr 02, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Closed out | 0 | 0 | — | — | — | -24 | -100.0% | Q1 2026 | May 15, 2026 |
| Tower Research Capital LLC (TRC) | History | Reduced | 1,698 | 0 | — | 0.0% | — | -3 | -0.18% | Q1 2026 | May 15, 2026 |
| JPMORGAN CHASE & CO | History | No change | 1 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | No change | 16 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 12, 2026 |
| Triumph Capital Management | History | No change | 1,655 | 0 | — | 0.0% | — | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| SBI Securities Co., Ltd. | History | No change | 1 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | Apr 27, 2026 |