SOMNIGROUP INTERNATIONAL (SGI) Institutional Ownership & Top Holders
The most recent SEC Form 13F filings (Q2 2026) show 15 hedge funds and institutional investors holding a combined 43.4M shares of SOMNIGROUP INTERNATIONAL (SGI), valued at $3.4B. The median portfolio weight is 5.6%.
The latest institutional ownership changes for SGI show net selling, with the combined position down by 2.7M shares (5.8%) from the previous quarter.
Among 13F filers, the funds with the highest portfolio allocation to SGI are Browning West (29.5% of its 13F portfolio), Linonia (9.3%), and Hudson Way Capital Management (8.4%). In Q2 2026, Wolf Hill Capital Management made the largest position increase (+4.9%), while Darsana made the largest reduction (-4.2%).
Top 10 Institutional Holders in SOMNIGROUP INTERNATIONAL (SGI), Ranked by Portfolio Weight
Based on the latest SEC Form 13F filings (Q2 2026).
| # | Fund | Shares | Market Value | Portfolio Weight |
|---|---|---|---|---|
| 1 | Browning West | 6,369,915 | $499.4M | 29.5% |
| 2 | Linonia | 6,624,644 | $519.4M | 9.3% |
| 3 | Hudson Way Capital Management | 1,205,807 | $94.5M | 8.4% |
| 4 | Abrams | 5,798,776 | $454.6M | 8.3% |
| 5 | Windacre Partnership | 8,420,300 | $660.2M | 6.5% |
| 6 | 140 Summer Partners | 995,287 | $78.0M | 6.3% |
| 7 | Avantyr Capital Partners | 2,153,090 | $168.8M | 6.2% |
| 8 | GOODNOW INVESTMENT GROUP | 687,425 | $53.9M | 5.6% |
| 9 | Wolf Hill Capital Management | 650,000 | $51.0M | 4.9% |
| 10 | Third Point | 2,570,769 | $201.5M | 4.3% |
- 15Institutional investors
- 43,364,070Shares held (disclosed)
- $3.4B13F market value
- 5.6%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 SGI. Sourced from 13F filings; reflects long equity positions only.
Quarter-over-Quarter ActivityQ2 2026
The biggest weight-increase and weight-decrease changes among funds that hold SGI. Deltas compare the selected filing to the previous reporting quarter.
Top buyers
- Wolf Hill Capital Management+4.9% · +650,000 shares
- Avantyr Capital Partners+4.0% · +1,528,886 shares
- Browning West+2.6% · +473,209 shares
Top sellers
- Darsana-4.2% · -2,655,469 shares
- Linonia-2.8% · -2,157,367 shares
- Eminence Capital-2.6% · -1,512,994 shares
Ownership Statistics
- Funds holding
- 15
- Median weight
- 5.6%
- Largest holder
- Browning West · 29.5%
- Smallest holder
- Glazer Capital · 0.0%
- Shares held
- 43,364,070 (-2,688,027)
All Institutional HoldersSortable · searchable
All institutional investors (Max 50) holding SGI in the selected quarter. Click a fund name to drill into its full 13F portfolio.
| 1 | Browning West | 6,369,915 | $499.4M | 29.5% |
| 2 | Linonia | 6,624,644 | $519.4M | 9.3% |
| 3 | Hudson Way Capital Management | 1,205,807 | $94.5M | 8.4% |
| 4 | Abrams | 5,798,776 | $454.6M | 8.3% |
| 5 | Windacre Partnership | 8,420,300 | $660.2M | 6.5% |
| 6 | 140 Summer Partners | 995,287 | $78.0M | 6.3% |
| 7 | Avantyr Capital Partners | 2,153,090 | $168.8M | 6.2% |
| 8 | GOODNOW INVESTMENT GROUP | 687,425 | $53.9M | 5.6% |
| 9 | Wolf Hill Capital Management | 650,000 | $51.0M | 4.9% |
| 10 | Third Point | 2,570,769 | $201.5M | 4.3% |
| 11 | Forest Avenue | 1,296,142 | $101.6M | 4.3% |
| 12 | Avala Global | 1,375,396 | $107.8M | 4.0% |
| 13 | Broad Bay Capital Management | 226,605 | $17.8M | 1.7% |
| 14 | D1 Capital | 4,975,364 | $390.1M | 1.1% |
| 15 | Glazer Capital | 14,550 | $1.1M | 0.0% |
Institutional Investor Count Over Time
Number of institutional investors disclosing a long position in SOMNIGROUP INTERNATIONAL INC (SGI) each reporting quarter. Sourced from SEC Form 13F-HR filings.
Methodology & FAQ
Methodology: How We Track SGI 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: 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: We capture long positions in Section 13(f) securities for SOMNIGROUP INTERNATIONAL INC (SGI). 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.
- Metric definition: “Portfolio Weight” shows how much of a fund's total reported 13F portfolio value (excluding listed options) is allocated to SGI on the specific reporting date.
- How to use this data: 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 SGI?
We evaluate fund conviction by looking at portfolio weight rather than just absolute share count. By tracking how the largest holders , such as Browning West , Linonia , and Hudson Way Capital Management as of Q2 2026, change their position sizing quarter-over-quarter, we help investors distinguish between deliberate position sizing changes and passive mark-to-market drift.
Does the SGI 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 SGI 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 SGI 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 SGI as of each filing date.