ONCHW · 1RT Acquisition Corp. · Holdings
Substantial doubt about the company's ability to continue as a going concern.
“The Company's liquidity condition and mandatory liquidation within one year of the issuance of these unaudited condensed financial statements raise substantial doubt about the Company's ability to continue as a going concern. Management plans to address this uncertainty through a Business Combination.”View the 10-Q filed Aug 13, 2026
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Holder Concentration
Across 1 13F filers · Δ vs Jun 30, 2026Who Holds ONCHW
Last 5 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 40 filers, like-for-like change +4.1%; actively managed books +4.1%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 65.3% | 25 | +8.6% |
| Exempt adviser | 0.7% | 1 | 0.0% |
| Adviser | 17.7% | 1 | -5.7% |
| Bank | 1.3% | 2 | +69.5% |
| Non-US | 5.1% | 5 | -0.8% |
| Insurer | 0.0% | 0 | -100.0% |
| Unknown | 10.0% | 6 | +0.3% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Systematic-like | 14.6% | 4 | +43.2% |
| Concentrated | 6.3% | 6 | +17.5% |
| Diversified active | 79.2% | 30 | -1.7% |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Medium turnover | 31.2% | 21 | +0.7% |
| High turnover | 66.8% | 17 | +5.8% |
| Low turnover | 0.0% | 0 | — |
| Unknown | 2.0% | 2 | +3.9% |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 72.2% | 21 | +6.1% |
| Medium horizon | 6.8% | 3 | -5.9% |
| Long horizon | 6.0% | 6 | +17.4% |
| Unknown | 15.0% | 10 | -4.3% |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 28.2% | 12 | -2.0% |
| $1B to $10B | 62.3% | 18 | +4.5% |
| $10B to $100B | 8.9% | 7 | +19.4% |
| $100B or more | 0.6% | 3 | +174.4% |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Pooled investment vehicles | 64.1% | 23 | +8.8% |
| Registered funds and BDCs | 0.7% | 1 | 0.0% |
| Charitable organizations | 0.4% | 1 | 0.0% |
| Unknown | 34.7% | 15 | -3.3% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 66.0% | 26 | +8.5% |
| Private equity funds | 0.0% | 0 | — |
| Unknown | 34.0% | 14 | -3.4% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 81.1% | 29 | -1.1% |
| Outside the US | 18.9% | 11 | +34.8% |
The Sep 30, 2026 filing window is still open, so its bar shows only the filers that have filed so far.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Conviction and Crowding
40 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Shared Holders
Companies ONCHW's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | HCMA Hcm III Acquisition Corp. | 10 |
| 2 | FCRS FutureCrest Acquisition Corp. | 10 |
| 3 | HACQ HCM IV Acquisition Corp. | 10 |
| 4 | LWAC LightWave Acquisition Corp. | 9 |
| 5 | WENN WEN Acquisition Corp | 11 |
| 6 | CCII Cohen Circle Acquisition Corp. II | 9 |
| 7 | CEPF Cantor Equity Partners IV, Inc. | 11 |
| 8 | TLNC Talon Capital Corp. | 8 |
| 9 | ALOV Aldabra 4 Liquidity Opportunity Vehicle, Inc. | 8 |
| 10 | IPXG Inflection Point Acquisition Corp. VII | 8 |
Shareholder Targets
13F filers that own its peers but not ONCHW, quarter ended Jun 30, 2026Found through its holder-overlap peers: HCMA, FCRS, HACQ, LWAC, WENN, CCII, CEPF, TLNC, ALOV, IPXG, CEPV, RDAG, IPFX, RNGT, BLRK, LPCV, ARCI, GHXI, SVIV, MZYX. 82 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | ADAGE CAPITAL PARTNERS GP, L.L.C. Registered adviser, Diversified active | $168,149,429 12 held | GHXI, TLNC, IPXG |
| 2 | HIGHBRIDGE CAPITAL MANAGEMENT LLC Registered adviser, Diversified active | $45,277,395 10 held | HCMA, HACQ, WENN |
| 3 | Wealthspring Capital LLC Registered adviser, Diversified active | $38,279,312 11 held | RDAG, GHXI, WENN |
| 4 | Lineage Point Capital LP Adviser, Diversified active | $37,183,068 18 held | SVIV, RNGT, ALOV |
| 5 | Fort Baker Capital Management LP Registered adviser, Diversified active | $30,140,340 2 held | CCII, SVIV |
| 6 | Crossingbridge Advisors, LLC Adviser, Diversified active | $28,455,090 5 held | WENN, RDAG, SVIV |
| 7 | Sculptor Capital LP Registered adviser, Diversified active | $27,361,404 7 held | GHXI, RNGT, CEPV |
| 8 | Alyeska Investment Group, L.P. Registered adviser, Systematic-like | $27,214,755 3 held | CEPF, IPFX, IPXG |
| 9 | Kryger Capital LLC Registered adviser, Concentrated | $24,365,954 10 held | ALOV, HACQ, BLRK |
| 10 | PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser, Diversified active | $24,020,144 1 held | TLNC |
Quarterly Activity
New and Sold Out count only filers that reported a 13F for both quarters: a first-time filer's book is not a buy, and a fund that has not filed, or withheld its positions under confidential treatment, has not sold.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Micro GRITSTONE ASSET MANAGEMENT LLC Registered adviser ONCHW | $5,559 | 100.00% | 12,358 | Shares | 2026-10-26 |