ONCO · Onconetix, Inc. · Shareholders & Ownership
Substantial doubt about the company's ability to continue as a going concern.
“Because of historical and expected operating losses and net operating cash flow deficits, there is substantial doubt about the Company's ability to continue as a going concern for one year from the issuance of the unaudited condensed consolidated financial statements, which is not alleviated by management's plans.”View the 10-Q filed Aug 13, 2026
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Every disclosed holder of ONCO in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns ONCO
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 8,094 | 2.05% |
| Insiders (Forms 3, 4, 5) | 580 | 0.15% |
| 13D/G-only blocks | 41,962 | 10.63% |
| Remaining | 344,275 | 87.18% |
| Registered funds (N-PORT, not summed) | 2,264 | 0.57% |
Shares outstanding: 394,911, the issuer's latest cover-page count restated onto today's split basis.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of ONCO
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
Keystone Capital Partners, LLC
13G
CIK 1865973 · Unknown · Sep 30, 2026
Rule 13d-1(c), passive investor
|
41,930 | ||
| 2 |
HRT FINANCIAL LP
13F
CIK 1475597 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
5,140 | ||
| 2.1 |
|
336 | ||
| 3 |
Fidelity Extended Market Index Fund
Fund
S000006021 · Registered fund · Aug 31, 2026
Fidelity Concord Street Trust, not summed
|
2,264 | ||
| 4 |
StoneX Group Inc.
13F
CIK 913760 · Unknown · Sep 30, 2026
|
1,541 | ||
| 5 |
XTX Topco Ltd
13F
CIK 1828301 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,355 | ||
| 6 |
Altos Venture AG
13D
CIK 2006260 · Unknown · Jul 14, 2025
Item 4 purpose: Passive investment
not summed
|
546 | ||
| 6.1 |
|
546 | ||
| 7 |
SBI Securities Co., Ltd.
13F
CIK 1851815 · Non-US institution · Sep 30, 2026
|
31 | ||
| 8 |
|
16 | ||
| 8.1 |
|
16 | ||
| 9 |
Tower Research Capital LLC (TRC)
13F
CIK 1533421 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
15 | ||
| 10 |
|
14 | ||
| 10.1 |
|
14 | ||
| 11 |
Scablis AG
13G
CIK 2038013 · Unknown · Sep 24, 2024
Rule 13d-1(c), passive investor, unconfirmed, last confirmed Sep 24, 2024
|
14 | ||
| 12 |
New Horizon Health Limited
13G
CIK 2036876 · Unknown · Sep 24, 2024
Rule 13d-1(c), passive investor, unconfirmed, last confirmed Sep 24, 2024
|
13 | ||
| 13 |
HOLLENCREST CAPITAL MANAGEMENT
13F
CIK 1161722 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
10 | ||
| 14 |
Zurcher Kantonalbank (Zurich Cantonalbank)
13G
CIK 1368163 · Non-US institution · Dec 24, 2024
Rule 13d-1(d), exempt investor
|
5 | ||
| 15 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2 | ||
| 16 |
|
1 | ||
| 17 |
|
1 | ||
| 18 |
|
1 | ||
| 19 |
|
1 |
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.