Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in HSPT held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Clear Street Group Inc. | 182K | $1.9M | +286.4% | 2.636% | 0.01% |
| 2 | D. E. Shaw & Co., Inc. | 250K | $1.6M | 0.0% | 3.623% | 0.00% |
| 3 | RIVERNORTH CAPITAL MANAGEMENT, LLC | 130K | $1.4M | -78.1% | 1.884% | 0.07% |
| 4 | TWO SIGMA INVESTMENTS, LP | 207K | $1.3M | -4.7% | 3.004% | 0.00% |
| 5 | L1 Global Manager Pty Ltd | 150K | $967K | 0.0% | 2.174% | 0.78% |
| 6 | Westchester Capital Management, LLC | 21K | $223K | -94.8% | 0.304% | 0.01% |
| 7 | Quarry LP | 5K | $52K | 0.0% | 0.072% | 0.01% |
| 8 | UBS Group AG | 811 | $5K | -72.9% | 0.012% | 0.00% |
| 9 | GLAZER CAPITAL, LLC | 162K | $2K | 0.0% | 2.353% | 0.04% |
| 10 | MORGAN STANLEY | 74 | $477 | +54.2% | 0.001% | 0.00% |
| 11 | COOPERMAN LEON G | 1K | $242 | — | 0.016% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in HSPT — a direct measure of their conviction.
Filings activity in HSPT during Q1 2026, grouped by how each filer changed its position.
5 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 11 | 50% | 18.70% | 138.83 pp | $7M | 88% |
| Q4 2025 | 22 | +10% | 157.53% | 3.42 pp | $63M | 2.1% |
| Q3 2025 | 20 | +0.0% | 160.95% | +13.64 pp | $64M | +9.3% |
| Q2 2025 | 20 | +33% | 147.31% | +25.03 pp | $59M | +20% |
| Q1 2025 | 15 | — | 122.28% | — | $49M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying HSPT stock.
Based on Q1 2026 13F filings, institutional ownership of Horizon Space Acquisition II Corp. stands at 18.7%, held across 11 reporting institutions.
Clear Street Group Inc. is the largest reported institutional holder of HSPT, with approximately 181,878 shares worth $0.00B as of Q1 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of HSPT, including TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for HSPT is 22 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
1 institutions opened new positions in HSPT during Q1 2026, while 12 fully exited. 1 added to existing positions and 9 trimmed.
HSPT institutional ownership fell by 138.83 percentage points quarter-over-quarter, with a net change of -11 holders.
The top 10 institutions account for 100.0% of all reported 13F value in HSPT, and the top 25 account for 100.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Horizon Space Acquisition II Corp. (HSPT) Institutional Ownership