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GT Biopharma Inc
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0.290USD
-0.018-5.69%
Close 07-31 16:00（ET）Quotes delayed by 15 min
1.76MMarket Cap
LossP/E TTM
Shareholding Stats
Updated: Thu, May 14
Updated: Thu, May 14
Shareholders
Shareholder Types
Shareholders
Shareholders
Proportion
Bristol Capital Advisors, LLC
2.80%
Marzilli (Robert A)
2.22%
Vanguard Capital Management, LLC
1.43%
Breen (Michael Martin)
0.77%
Vanguard Fiduciary Trust Co
0.72%
Other
92.06%
Shareholders
Shareholders
Proportion
Bristol Capital Advisors, LLC
2.80%
Marzilli (Robert A)
2.22%
Vanguard Capital Management, LLC
1.43%
Breen (Michael Martin)
0.77%
Vanguard Fiduciary Trust Co
0.72%
Other
92.06%
Shareholder Types
Shareholders
Proportion
Investment Advisor
3.48%
Individual Investor
3.38%
Hedge Fund
3.10%
Corporation
0.52%
Research Firm
0.14%
Investment Advisor/Hedge Fund
0.07%
Other
89.30%
Institutional Shareholding
Updated: Wed, Apr 1
Updated: Wed, Apr 1
Reporting Period
No. of institutions
Shares Held
Proportion
Change
2026Q1
67
2.14M
6.79%
+183.04K
2025Q4
63
815.08K
3.30%
-670.24K
2025Q3
59
539.33K
15.18%
-858.08K
2025Q2
66
1.25M
38.22%
-642.80K
2025Q1
68
804.53K
32.52%
-1.10M
2024Q4
67
1.69M
77.15%
+250.78K
2024Q3
72
1.78M
83.42%
+447.50K
2024Q2
86
1.49M
74.57%
+1.15M
2024Q1
114
291.84K
21.12%
+12.53K
2023Q4
122
330.03K
23.89%
+44.31K
View more
Shareholder Activity
Name
Shares Held
Proportion
Change
Chg %
Date
Bristol Capital Advisors, LLC
884.52K
2.8%
+660.00K
+293.95%
Feb 23, 2026
Marzilli (Robert A)
700.00K
2.22%
+500.00K
+250.00%
Feb 23, 2026
Breen (Michael Martin)
243.54K
0.77%
+198.33K
+438.73%
Feb 23, 2026
Five Narrow Lane LP
131.82K
0.42%
-92.58K
-41.26%
Feb 23, 2026
Citadel Advisors LLC
80.76K
0.26%
+41.13K
+103.77%
Dec 31, 2025
Casamento (Charles J)
62.50K
0.2%
+62.50K
--
Feb 23, 2026
Scientech Research LLC
54.74K
0.17%
+54.74K
--
Dec 31, 2025
Urban (Alan Louis)
50.00K
0.16%
+50.00K
--
Feb 23, 2026
View more
Related ETFs
Updated: Sat, Dec 6
Updated: Sat, Dec 6
Name
Proportion
DFA Dimensional US Sustainability Core 1 ETF
0%
DFA Dimensional US Sustainability Core 1 ETF
Proportion0%