HORIZON ACQUISITION (HZAC) Institutional Ownership & Top Holders
The most recent SEC Form 13F filings (Q3 2021) show 3 hedge funds and institutional investors holding a combined 2.4M shares of HORIZON ACQUISITION (HZAC), valued at $23.7M. The median portfolio weight is 0.3%.
Quarterly institutional ownership changes in HZAC show net buying, with the combined position increasing by 1.2M shares (107.9%) from the previous quarter.
Among 13F filers, the funds with the highest portfolio allocation to HZAC are Alpha Wave Global (0.3% of its 13F portfolio), Glazer Capital (0.3%), and Diameter Capital Partners (0.3%). In Q3 2021, Alpha Wave Global made the largest position increase (+0.3%).
Top 3 Institutional Holders in HORIZON ACQUISITION (HZAC), Ranked by Portfolio Weight
Based on the latest SEC Form 13F filings (Q3 2021).
| # | Fund | Shares | Market Value | Portfolio Weight |
|---|---|---|---|---|
| 1 | Alpha Wave Global | 450,322 | $4.5M | 0.3% |
| 2 | Glazer Capital | 1,679,068 | $16.8M | 0.3% |
| 3 | Diameter Capital Partners | 250,000 | $2.5M | 0.3% |
- 3Institutional investors
- 2,379,390Shares held (disclosed)
- $23.7M13F market value
- 0.3%Median portfolio weight
Ownership History
Quarter-by-quarter share count, market value, and portfolio conviction weight (up to 5 of the heaviest weight-by-portfolio funds) of HZAC. Sourced from 13F filings; reflects long equity positions only.
Quarter-over-Quarter ActivityQ3 2021
The biggest weight-increase and weight-decrease changes among funds that hold HZAC. Deltas compare the selected filing to the previous reporting quarter.
Top buyers
- Alpha Wave Global+0.3% · +450,322 shares
- Glazer Capital+0.2% · +784,382 shares
Top sellers
No notable sellers this quarter.
Ownership Statistics
- Funds holding
- 3
- Median weight
- 0.3%
- Largest holder
- Alpha Wave Global · 0.3%
- Smallest holder
- Diameter Capital Partners · 0.3%
- Shares held
- 2,379,390 (+1,234,704)
All Institutional HoldersSortable · searchable
All institutional investors (Max 50) holding HZAC in the selected quarter. Click a fund name to drill into its full 13F portfolio.
| 1 | Alpha Wave Global | 450,322 | $4.5M | 0.3% |
| 2 | Glazer Capital | 1,679,068 | $16.8M | 0.3% |
| 3 | Diameter Capital Partners | 250,000 | $2.5M | 0.3% |
Institutional Investor Count Over Time
Number of institutional investors disclosing a long position in HORIZON ACQUISITION CORP (HZAC) each reporting quarter. Sourced from SEC Form 13F-HR filings.
Methodology & FAQ
Methodology: How We Track HZAC Institutional Holdings
Our data is systematically aggregated directly from quarterly Form 13F-HR disclosures submitted to the U.S. Securities and Exchange Commission (SEC).
- Who Must File (Reporting Threshold): This dataset includes filings from U.S. institutional investment managers, hedge funds, mutual funds, university endowments, and family offices managing at least $100 million in Section 13(f) securities (including equities, options, convertibles, ETFs, and warrants).
- What is Included (Data Scope): We capture long positions in Section 13(f) securities for HORIZON ACQUISITION CORP (HZAC). By SEC regulation, 13F filings do not require the disclosure of short positions, non-U.S. holdings, or OTC derivatives. Listed options are excluded from portfolio weight calculations to ensure comparability across filers.
- Portfolio Weight Explained (Metric Definition): “Portfolio Weight” shows how much of a fund's total reported 13F portfolio value (excluding listed options) is allocated to HZAC on the specific reporting date.
- How to Use This Data (Interpretation): Quarter-over-quarter changes in shares and portfolio weight reflect a combination of active trading and market price movements. These are descriptive metrics of fund allocation, not explicit buy or sell signals.
How do you measure hedge fund conviction and institutional concentration in HZAC?
We evaluate fund conviction by looking at portfolio weight rather than just absolute share count. By tracking how the largest holders —such as Alpha Wave Global , Glazer Capital , and Diameter Capital Partners as of Q3 2021— change their position sizing quarter-over-quarter, we help investors distinguish between deliberate position sizing changes and passive mark-to-market drift.
Does the HZAC ownership data include short interest or options?
SEC Form 13F mandates the disclosure of long positions in Section 13(f) securities, which includes equities and listed options (put and call contracts), but excludes short interest, swaps, and OTC derivatives by regulatory design. On this platform, listed options are excluded from portfolio weight calculations to ensure comparability across filers.
Are family offices and university endowments included in this HZAC data?
Yes. In addition to traditional hedge funds and large asset managers, any institutional entity exercising investment discretion over at least $100 million in Section 13(f) securities must file a Form 13F. This explicitly includes single-family offices and university endowments. If a qualifying family office or endowment holds HZAC stock, their allocation is systematically aggregated alongside traditional fund data.
When is the institutional ownership data updated, and is there a reporting lag?
Institutional investment managers are required to file their Form 13F within 45 days after the end of a calendar quarter (the standard “T+45” window). Our platform re-ingests new filings from the SEC EDGAR database on a nightly cycle, typically within 24–48 hours of publication, providing a point-in-time snapshot of reported consensus positioning for HZAC as of each filing date.