HSPOF · Horizon Space Acquisition I Corp. · Holdings
Substantial doubt about the company's ability to continue as a going concern.
“In connection with the Company's assessment of going concern considerations in accordance with Financial Accounting Standard Board's Accounting Standards Update ("ASU") 2014-15, "Disclosures of Uncertainties about an Entity's Ability to Continue as a Going Concern," management has determined that these conditions raise substantial doubt about the Company's ability to continue as a going concern. Currently, pursuant to the Company's amended and restated memorandum and articles of association, the Company has extended the deadline to consummate its initial business combination to June 12, 2027, with no extension fee required to be deposited into the Trust Account. If the Company is unable to complete a Business Combination within the Combination Period, the Company's board of directors would proceed to commence a voluntary liquidation and thereby a formal dissolution of the Company. There is no assurance that the Company's plans to consummate a Business Combination will be successful within the Combination Period. As a result, management has determined that such additional conditions also raise substantial doubt about the Company's ability to continue as a going concern.”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
Who Holds HSPOF
Last 8 quarters through Sep 30, 2025Each 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.
Sep 30, 2025: 13 filers, like-for-like change -0.4%; actively managed books -0.5%; index-like books 0.0%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 64.0% | 4 | -0.1% |
| Adviser | 0.0% | 1 | new |
| Bank | 1.2% | 2 | -23.5% |
| Insurer | 11.8% | 1 | 0.0% |
| Non-US | 0.0% | 1 | +417.3% |
| Holding company | 0.0% | 1 | +50.0% |
| Broker-dealer | 0.0% | 0 | — |
| Exempt adviser | 0.0% | 0 | — |
| Unknown | 22.9% | 3 | +0.1% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 21.6% | 2 | 0.0% |
| Systematic-like | 22.0% | 2 | -0.3% |
| Concentrated | 0.3% | 3 | +15.3% |
| Diversified active | 56.0% | 6 | -0.7% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 0.7% | 2 | -2.1% |
| Medium turnover | 29.7% | 4 | -1.2% |
| High turnover | 47.8% | 5 | -0.1% |
| Unknown | 21.9% | 2 | 0.0% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 57.3% | 6 | +0.1% |
| Long horizon | 1.2% | 3 | -23.4% |
| Medium horizon | 0.0% | 0 | — |
| Unknown | 41.5% | 4 | -0.2% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 35.4% | 5 | +0.2% |
| $1B to $10B | 63.1% | 4 | -0.1% |
| $10B to $100B | 0.8% | 2 | -30.5% |
| $100B or more | 0.7% | 2 | -2.1% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Pooled investment vehicles | 29.7% | 2 | -0.3% |
| Registered funds and BDCs | 34.4% | 2 | 0.0% |
| Unknown | 36.0% | 9 | -0.9% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 29.7% | 2 | -0.3% |
| Private equity funds | 17.3% | 1 | 0.0% |
| No private funds | 17.1% | 1 | 0.0% |
| Private funds, type not stated | 0.0% | 0 | — |
| Unknown | 36.0% | 9 | -0.9% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 90.1% | 9 | 0.0% |
| Outside the US | 9.9% | 4 | -3.6% |
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.
Excluded 1 holder with no observed 2025-09-30 13F. Compared across CIK changes: 2 filers continue as Clear Street Group Inc.
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.
Compared across CIK changes: 2 filers continue as Clear Street Group Inc.
Top Buyers
vs Jun 30, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mid Quarry LP | +338 | 17,237 | |
| Small PenderFund Capital Management Ltd. | +217 | 269 | |
| Mega MORGAN STANLEY | +5 | 15 |
Top Sellers
vs Jun 30, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Large TORONTO DOMINION BANK | −6,382 | 10,000 | |
| Mid WOLVERINE ASSET MANAGEMENT LLC | −1,394 | 365,655 | |
| Mega UBS Group AG | −254 | 11,649 | |
| Large Clear Street Group Inc. | −100 | 4,764 |
Top New Positions
vs Jun 30, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Small Crossingbridge Advisors, LLC | 633 | $0 |
Top Sold-Out Positions
vs Jun 30, 2025| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mid Polar Asset Management Partners Inc. Registered adviser HSPO | — | — | 150,000 | Shares | 2025-12-01 | |
| Mega MORGAN STANLEY Holding company HSPO | — | — | 15 | Shares | 2026-05-27 | |
| Mid BERKLEY W R CORP Insurer HSPO | — | — | 205,129 | Shares | 2025-11-14 | |
| Mid MIZUHO SECURITIES USA LLC HSPO | — | — | 375,209 | Shares | 2025-10-22 | |
| Small Crossingbridge Advisors, LLC Adviser HSPO | — | — | 633 | Shares | 2025-11-13 | |
| Small PenderFund Capital Management Ltd. Non-US HSPO | — | — | 269 | Shares | 2025-11-14 | |
| Mid Quarry LP HSPO | — | — | 17,237 | Shares | 2025-11-14 | |
| Mid WOLVERINE ASSET MANAGEMENT LLC Registered adviser HSPO | — | — | 365,655 | Shares | 2025-10-28 | |
| Mid First Trust Capital Management L.P. Registered adviser HSPO | — | — | 300,000 | Shares | 2025-11-17 | |
| Large Clear Street Group Inc. HSPO | — | — | 4,764 | Shares | 2025-11-14 | |
| Mid Westchester Capital Management, LLC Registered adviser HSPO | — | — | 297,000 | Shares | 2025-11-14 | |
| Large TORONTO DOMINION BANK Bank HSPO | — | — | 10,000 | Shares | 2025-11-14 | |
| Mega UBS Group AG Bank HSPO | — | — | 11,649 | Shares | 2025-11-13 |