Onconetix, Inc. (ONCO) — Institutional Holders, Q2 2026
6 institutional investment managers reported a ONCO position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $16.0K. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
ONCO in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- XTX Topco LtdNew · +13,548 sh+$15.3K
- SBI Securities , Ltd.Added · +240 sh+$271.00
- HOLLENCREST SECURITIESNew · +100 sh+$113.00
- MORGAN STANLEYNew · +21 sh+$24.00
Biggest sellers
- GEODE CAPITAL MANAGEMENTSold out · -1,185 sh-$1.3K
- CITIGROUPSold out · -172 sh-$195.00
- UBS Group AGSold out · -158 sh-$179.00
ONCO 13F holders ranked 1–6 of 6
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | XTX Topco Ltd#1 · 13,548 sh | 13,548 | $15.3K | <0.01% | New |
| 2 | SBI Securities , Ltd.#2 · 252 sh | 252 | $285.00 | — | +110.0% |
| 3 | Tower Research Capital (TRC)#3 · 145 sh | 145 | $164.00 | 0.00% | -90.0% |
| 4 | HOLLENCREST SECURITIES#4 · 100 sh | 100 | $113.00 | 0.00% | New |
| 5 | HRT FINANCIAL#5 · 51,398 sh | 51,398 | $58.00 | 0.00% | New |
| 6 | MORGAN STANLEY#6 · 21 sh | 21 | $24.00 | 0.00% | New |
Funds that sold out of ONCO in Q2 2026 (3)
Held ONCO at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| GEODE CAPITAL MANAGEMENT1,185 sh | 1,185 | $17.7K |
| CITIGROUP172 sh | 172 | $2.6K |
| UBS Group AG158 sh | 158 | $2.4K |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.