# HORIZON SPACE ACQUSTN I CORP (HSPOF)

> Institutional ownership reported to the SEC as of Q3 2025, from Form 13F filings. Source: https://holderbook.com/stocks/HSPOF/

- Reporting holders: 13
- Reported value: $21.4M
- Shares held by institutions: 1,737,560 of 4,168,739 outstanding
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [MIZUHO SECURITIES USA LLC](https://holderbook.com/funds/812291-mizuho-securities-usa-llc/) | $4.6M | 375,209 | 0.1% | 2 |
| [WOLVERINE ASSET MANAGEMENT LLC](https://holderbook.com/funds/1279891-wolverine-asset-management-llc/) | $4.5M | 365,655 | 0.0% | 11 |
| [First Trust Capital Management L.P.](https://holderbook.com/funds/1604488-first-trust-capital-management-l-p/) | $3.7M | 300,000 | 0.2% | 9 |
| [Westchester Capital Management, LLC](https://holderbook.com/funds/1512805-westchester-capital-management-llc/) | $3.7M | 297,000 | 0.2% | 8 |
| [BERKLEY W R CORP](https://holderbook.com/funds/11544-berkley-w-r-corp/) | $2.5M | 205,129 | 0.1% | 9 |
| [Polar Asset Management Partners Inc.](https://holderbook.com/funds/1326389-polar-asset-management-partners-inc/) | $1.8M | 150,000 | 0.0% | 11 |
| [Quarry LP](https://holderbook.com/funds/1965207-quarry-lp/) | $212.9K | 17,237 | 0.0% | 2 |
| [UBS Group AG](https://holderbook.com/funds/1610520-ubs-group-ag/) | $143.5K | 11,649 | 0.0% | 7 |
| [TORONTO DOMINION BANK](https://holderbook.com/funds/947263-toronto-dominion-bank/) | $123.2K | 10,000 | 0.0% | 3 |
| [Clear Street Group Inc.](https://holderbook.com/funds/1881567-clear-street-group-inc/) | $58.7K | 4,764 | 0.0% | 1 |
| [Crossingbridge Advisors, LLC](https://holderbook.com/funds/1770024-crossingbridge-advisors-llc/) | $7.8K | 633 | 0.0% | 1 |
| [PenderFund Capital Management Ltd.](https://holderbook.com/funds/1706164-penderfund-capital-management-ltd/) | $3.3K | 269 | 0.0% | 2 |
| [MORGAN STANLEY](https://holderbook.com/funds/895421-morgan-stanley/) | $185 | 15 | 0.0% | 3 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q3 2025 | 13 | $21.4M |
| Q2 2025 | 12 | $20.9M |
| Q1 2025 | 11 | $21.0M |
| Q4 2024 | 8 | $21.2M |
| Q3 2024 | 22 | $61.4M |
| Q2 2024 | 25 | $60.8M |
| Q1 2024 | 25 | $58.3M |
| Q4 2023 | 28 | $64.2M |
| Q3 2023 | 31 | $65.7M |
| Q2 2023 | 28 | $63.3M |
| Q1 2023 | 24 | $61.2M |