Who owns Somnigroup International (SGI)
Which tracked institutional funds hold SGI, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SGI company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
167 tracked funds added or opened SGI while 116 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
SGI’s largest tracked holder by dollar value, FMR LLC, sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in SGI divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 504 tracked filers holding SGI, 294 increased or opened the position and 288 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in SGI between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 44
- Luxor Capital Group, LP$95M
- Engineers Gate Manager LP$60M
- Wolf Hill Capital Management, LP$51M
- Empyrean Capital Partners, LP$50M
- MAPLELANE CAPITAL, LLC$45M
- Interval Partners, LP$25M
Full exits 64
- Darsana Capital Partners LP$196M
- EMINENCE CAPITAL, LP$112M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$51M
- Qube Research & Technologies Ltd$40M
- NATIXIS ADVISORS, LLC$38M
- RENAISSANCE TECHNOLOGIES LLC$37M
Largest adds
- BlackRock, Inc.$126M
- Avantyr Capital Partners, LP$123M
- Castle Hook Partners LP$121M
- Cartenna Capital, LP$100M
- MORGAN STANLEY$97M
- STEADFAST CAPITAL MANAGEMENT LP$89M
Largest trims
- Linonia Partnership LP$130M
- GEODE CAPITAL MANAGEMENT, LLC$45M
- Squarepoint Ops LLC$22M
- MARSHALL WACE, LLP$18M
- ArrowMark Colorado Holdings LLC$17M
- Avala Global LP$17M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| FMR LLC trimmed | 26,326,268 | $2.1B | 12.4% | 2026-Q2 |
| BlackRock, Inc. added | 19,229,644 | $1.5B | 9.1% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 9,156,443 | $718M | 4.3% | 2026-Q2 |
| Select Equity Group, L.P. trimmed | 8,892,691 | $697M | 4.2% | 2026-Q2 |
| WINDACRE PARTNERSHIP LLC added | 8,420,300 | $660M | 4.0% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 8,221,101 | $645M | 3.9% | 2026-Q2 |
| STATE STREET CORP added | 7,280,308 | $571M | 3.4% | 2026-Q2 |
| Linonia Partnership LP trimmed | 6,624,644 | $519M | 3.1% | 2026-Q2 |
| BROWNING WEST LP added | 6,369,915 | $499M | 3.0% | 2026-Q2 |
| ABRAMS CAPITAL MANAGEMENT, L.P. | 5,798,776 | $455M | 2.7% | 2026-Q2 |
| D1 Capital Partners L.P. added | 4,975,364 | $390M | 2.3% | 2026-Q2 |
| Artisan Partners Limited Partnership added | 4,663,275 | $366M | 2.2% | 2026-Q2 |
| Boston Partners added | 4,453,103 | $349M | 2.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 4,005,479 | $314M | 1.9% | 2026-Q2 |
| LONDON CO OF VIRGINIA added | 3,764,607 | $295M | 1.8% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 3,743,311 | $293M | 1.8% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC added | 3,326,060 | $257M | 1.5% | 2026-Q2 |
| MORGAN STANLEY added | 3,202,347 | $251M | 1.5% | 2026-Q2 |
| TIMUCUAN ASSET MANAGEMENT INC/FL added | 2,975,857 | $233M | 1.4% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 2,878,441 | $226M | 1.4% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 2,683,604 | $210M | 1.3% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 2,610,099 | $205M | 1.2% | 2026-Q2 |
| Third Point LLC added | 2,570,769 | $202M | 1.2% | 2026-Q2 |
| BECK MACK & OLIVER LLC added | 2,468,485 | $194M | 1.2% | 2026-Q2 |
| UBS Group AG added | 2,355,412 | $185M | 1.1% | 2026-Q2 |
| Avantyr Capital Partners, LP added | 2,153,090 | $169M | 1.0% | 2026-Q2 |
| STEADFAST CAPITAL MANAGEMENT LP added | 2,117,765 | $166M | 1.0% | 2026-Q2 |
| NORGES BANK trimmed | 2,055,833 | $161M | 1.0% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,926,699 | $151M | 0.9% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 1,747,084 | $137M | 0.8% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 1,731,286 | $136M | 0.8% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 1,702,232 | $133M | 0.8% | 2026-Q2 |
| Invesco Ltd. added | 1,644,608 | $129M | 0.8% | 2026-Q2 |
| Castle Hook Partners LP added | 1,556,679 | $122M | 0.7% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 1,423,143 | $112M | 0.7% | 2026-Q2 |
| Avala Global LP trimmed | 1,375,396 | $108M | 0.6% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 1,360,725 | $107M | 0.6% | 2026-Q2 |
| Cartenna Capital, LP added | 1,350,000 | $106M | 0.6% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 1,326,431 | $104M | 0.6% | 2026-Q2 |
| Forest Avenue Capital Management LP added | 1,296,142 | $102M | 0.6% | 2026-Q2 |
| Luxor Capital Group, LP new | 1,208,100 | $95M | 0.6% | 2026-Q2 |
| Hudson Way Capital Management LLC trimmed | 1,205,807 | $95M | 0.6% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 1,156,946 | $91M | 0.5% | 2026-Q2 |
| FIL Ltd added | 1,063,331 | $83M | 0.5% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC added | 1,057,361 | $83M | 0.5% | 2026-Q2 |
| Artemis Investment Management LLP added | 1,022,755 | $80M | 0.5% | 2026-Q2 |
| 140 Summer Partners LP added | 995,287 | $78M | 0.5% | 2026-Q2 |
| Clearbridge Investments, LLC added | 961,530 | $75M | 0.5% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 916,232 | $72M | 0.4% | 2026-Q2 |
| SCOPUS ASSET MANAGEMENT, L.P. added | 885,000 | $69M | 0.4% | 2026-Q2 |
| M.D. Sass, LLC added | 836,265 | $66M | 0.4% | 2026-Q2 |
| Engineers Gate Manager LP added | 765,457 | $60M | 0.4% | 2026-Q2 |
| Gotham Asset Management, LLC added | 702,339 | $55M | 0.3% | 2026-Q2 |
| CITIGROUP INC added | 691,163 | $54M | 0.3% | 2026-Q2 |
| GOODNOW INVESTMENT GROUP, LLC added | 687,425 | $54M | 0.3% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP added | 684,898 | $53M | 0.3% | 2026-Q2 |
| Wolf Hill Capital Management, LP trimmed | 650,000 | $51M | 0.3% | 2026-Q2 |
| Empyrean Capital Partners, LP new | 632,000 | $50M | 0.3% | 2026-Q2 |
| SW Investment Management LLC | 600,000 | $47M | 0.3% | 2026-Q2 |
| MAPLELANE CAPITAL, LLC new | 578,600 | $45M | 0.3% | 2026-Q2 |
| Greenstone Partners & Co., LLC added | 568,634 | $45M | 0.3% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 549,036 | $43M | 0.3% | 2026-Q2 |
| No Street GP LP added | 540,000 | $42M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 532,024 | $42M | 0.3% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 530,491 | $42M | 0.2% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 512,954 | $40M | 0.2% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 489,785 | $38M | 0.2% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 477,125 | $37M | 0.2% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 444,417 | $35M | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 431,046 | $34M | 0.2% | 2026-Q2 |
| Nuveen, LLC trimmed | 423,480 | $33M | 0.2% | 2026-Q2 |
| 12th Street Asset Management Company, LLC added | 412,964 | $32M | 0.2% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 405,845 | $32M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 401,000 | $31M | 0.2% | 2026-Q2 |
| Robertson Opportunity Capital, LLC | 354,826 | $28M | 0.2% | 2026-Q2 |
| Highlander Partners, L.P. added | 329,500 | $26M | 0.2% | 2026-Q2 |
| MARSHALL WACE, LLP trimmed | 322,484 | $25M | 0.2% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 320,425 | $25M | 0.2% | 2026-Q2 |
| Interval Partners, LP added | 317,446 | $25M | 0.1% | 2026-Q2 |
| Ceredex Value Advisors LLC added | 306,950 | $24M | 0.1% | 2026-Q2 |
| FRED ALGER MANAGEMENT, LLC added | 297,658 | $23M | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 290,797 | $23M | 0.1% | 2026-Q2 |
| Anabranch Capital Management, LP added | 290,501 | $23M | 0.1% | 2026-Q2 |
| Retirement Systems of Alabama trimmed | 274,545 | $22M | 0.1% | 2026-Q2 |
| Legal & General Group Plc trimmed | 272,083 | $21M | 0.1% | 2026-Q2 |
| LOOMIS SAYLES & CO L P added | 271,805 | $21M | 0.1% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 255,151 | $20M | 0.1% | 2026-Q2 |
| CLOUGH CAPITAL PARTNERS L P new | 253,575 | $20M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 253,052 | $19M | 0.1% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. trimmed | 250,000 | $20M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 230,721 | $18M | 0.1% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 228,716 | $18M | 0.1% | 2026-Q2 |
| Verition Fund Management LLC added | 227,547 | $18M | 0.1% | 2026-Q2 |
| Broad Bay Capital Management, LP trimmed | 226,605 | $18M | 0.1% | 2026-Q2 |
| PARNASSUS INVESTMENTS, LLC added | 206,742 | $16M | 0.1% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 205,011 | $16M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 192,706 | $15M | 0.1% | 2026-Q2 |
| RIHO Partners, LLC added | 187,368 | $15M | 0.1% | 2026-Q2 |
| Tidal Investments LLC added | 184,212 | $14M | 0.1% | 2026-Q2 |
| Cresset Asset Management, LLC added | 171,496 | $13M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.