Horizon Space Acquisition-RTHSPRFPreferred / convertible
13F holders, Q3 2025 (September 30)17holders
0new positions
0sold out
$0.16avg. 13F price*
At the end of Q3 2025, 17 institutions reported holding Horizon Space Acquisition-RT (HSPRF) in their 13F filings, unchanged from Q2 2025. 0 opened new positions and 0 sold out. The largest holders were Harraden Circle Investments, LLC ($281K), Clear Street Group Inc. ($63K) and Polar Asset Management Partners Inc. ($44K).
- Company
- Horizon Space Acquisition-RT
- CUSIP
- G4619M125
- Latest filing quarter
- Q4 2025
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 0 | $0 |
| Exits | 0 | $0 |
All 13F filers, Q2 2025 → Q3 2025: 73,830 shares bought and 39,742 shares sold, net +34,088 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 17 holders
| Harraden Circle Investments, LLC | — | No change | 1,754,525 | $281K |
| Clear Street Group Inc. | — | — | 392,649 | $63K |
| Polar Asset Management Partners Inc. | — | No change | 275,000 | $44K |
| Yakira Capital Management, Inc. | — | No change | 250,000 | $40K |
| AQR Arbitrage LLC | — | No change | 246,133 | $39K |
| Highbridge Capital Management LLC | — | Add +45.2% | 234,163 | $37K |
| Rivernorth Capital Management, LLC | — | No change | 214,357 | $34K |
| Wolverine Asset Management LLC | — | Reduce -1.0% | 209,403 | $34K |
| Periscope Capital Inc. | — | No change | 180,900 | $31K |
| Shaolin Capital Management LLC | — | No change | 150,000 | $24K |
| Toronto Dominion Bank | — | No change | 117,551 | $19K |
| LMR Partners LLP | — | No change | 100,000 | $16K |
| Mint Tower Capital Management B.V. | — | No change | 75,000 | $12K |
| GABELLI & Co INVESTMENT ADVISERS, INC. | — | No change | 67,700 | $11K |
| Meteora Capital, LLC | — | Add +1.8% | 21,226 | $3K |
| Flow Traders U.S. LLC | — | Add +3.9% | 15,482 | $2K |
| UBS Group AG | — | Reduce -99.3% | 259 | $41 |
"% of holder's portfolio" is HSPRF's weight in each manager's 13F, not the share of Horizon Space Acquisition-RT the manager owns.