Who owns Simpson Manufacturing Co. (SSD)
Which tracked institutional funds hold SSD, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SSD 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
The tracked-fund tape on SSD is one-sided between 2026-Q1 and 2026-Q2: 189 added or opened and 64 trimmed or exited — on balance accumulating.
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
SSD’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes SSD more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in SSD 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 448 tracked filers holding SSD, 217 increased or opened the position and 243 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
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 SSD 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 25
- NOMURA ASSET MANAGEMENT INTERNATIONAL INC.$39M
- Fivespan Partners, LP$19M
- Public Sector Pension Investment Board$9M
- Bridgewater Associates, LP$8M
- SummitTX Capital, L.P.$8M
- Trexquant Investment LP$7M
Full exits 42
- GW&K Investment Management, LLC$36M
- STATE FARM MUTUAL AUTOMOBILE INSURANCE CO$31M
- BESSEMER GROUP INC$31M
- ADAGE CAPITAL PARTNERS GP, L.L.C.$27M
- T. Rowe Price Investment Management, Inc.$22M
- Select Equity Group, L.P.$21M
Largest adds
- FMR LLC$315M
- BlackRock, Inc.$226M
- MASSACHUSETTS FINANCIAL SERVICES CO /MA/$86M
- KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC$80M
- VANGUARD PORTFOLIO MANAGEMENT LLC$72M
- VANGUARD CAPITAL MANAGEMENT LLC$68M
Largest trims
- ValueAct Holdings, L.P.$66M
- Conestoga Capital Advisors, LLC$25M
- COOKE & BIELER LP$9M
- D. E. Shaw & Co., Inc.$8M
- JANE STREET GROUP, LLC$7M
- River Road Asset Management, LLC$6M
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 |
|---|---|---|---|---|
| BlackRock, Inc. added | 4,118,164 | $862M | 10.7% | 2026-Q2 |
| FMR LLC added | 3,669,547 | $768M | 9.5% | 2026-Q2 |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC trimmed | 3,568,049 | $747M | 9.3% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 1,924,650 | $403M | 5.0% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 1,854,556 | $388M | 4.8% | 2026-Q2 |
| STATE STREET CORP added | 1,308,394 | $274M | 3.4% | 2026-Q2 |
| MORGAN STANLEY trimmed | 1,201,143 | $251M | 3.1% | 2026-Q2 |
| Baker Avenue Asset Management, LP trimmed | 914,514 | $191M | 2.4% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 887,760 | $186M | 2.3% | 2026-Q2 |
| Quantinno Capital Management LP added | 862,031 | $180M | 2.2% | 2026-Q2 |
| ValueAct Holdings, L.P. trimmed | 830,642 | $174M | 2.2% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 783,269 | $164M | 2.0% | 2026-Q2 |
| Capital International Investors trimmed | 648,641 | $136M | 1.7% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ trimmed | 642,267 | $134M | 1.7% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC trimmed | 606,113 | $127M | 1.6% | 2026-Q2 |
| NORTHERN TRUST CORP added | 600,268 | $126M | 1.6% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 583,523 | $122M | 1.5% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ added | 542,592 | $116M | 1.4% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 525,383 | $110M | 1.4% | 2026-Q2 |
| Maren Capital LLC added | 513,029 | $107M | 1.3% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 502,362 | $105M | 1.3% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 451,848 | $95M | 1.2% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 442,833 | $93M | 1.2% | 2026-Q2 |
| NORGES BANK trimmed | 434,349 | $91M | 1.1% | 2026-Q2 |
| FIDUCIARY MANAGEMENT INC /WI/ trimmed | 404,809 | $85M | 1.1% | 2026-Q2 |
| Port Capital LLC trimmed | 394,379 | $83M | 1.0% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 377,727 | $79M | 1.0% | 2026-Q2 |
| Conestoga Capital Advisors, LLC trimmed | 377,341 | $79M | 1.0% | 2026-Q2 |
| SNYDER CAPITAL MANAGEMENT L P trimmed | 301,491 | $63M | 0.8% | 2026-Q2 |
| BROWN ADVISORY INC trimmed | 296,579 | $62M | 0.8% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 282,765 | $59M | 0.7% | 2026-Q2 |
| ROYCE & ASSOCIATES LP trimmed | 277,357 | $58M | 0.7% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 270,141 | $57M | 0.7% | 2026-Q2 |
| Capital World Investors added | 266,953 | $56M | 0.7% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 264,071 | $55M | 0.7% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC trimmed | 263,891 | $54M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 259,939 | $54M | 0.7% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 255,852 | $54M | 0.7% | 2026-Q2 |
| FEDERATED HERMES, INC. trimmed | 241,257 | $51M | 0.6% | 2026-Q2 |
| DISCIPLINED GROWTH INVESTORS INC /MN trimmed | 240,664 | $50M | 0.6% | 2026-Q2 |
| SCHRODER INVESTMENT MANAGEMENT GROUP trimmed | 230,727 | $48M | 0.6% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 219,132 | $46M | 0.6% | 2026-Q2 |
| Champlain Investment Partners, LLC trimmed | 214,765 | $45M | 0.6% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 203,524 | $43M | 0.5% | 2026-Q2 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. new | 186,383 | $39M | 0.5% | 2026-Q2 |
| SEGALL BRYANT & HAMILL, LLC added | 160,912 | $34M | 0.4% | 2026-Q2 |
| Ranger Investment Management, L.P. trimmed | 151,834 | $32M | 0.4% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 148,018 | $31M | 0.4% | 2026-Q2 |
| Cornerstone Capital, Inc. added | 143,047 | $30M | 0.4% | 2026-Q2 |
| Invesco Ltd. added | 135,229 | $28M | 0.4% | 2026-Q2 |
| Clearbridge Investments, LLC added | 133,655 | $28M | 0.3% | 2026-Q2 |
| Gotham Asset Management, LLC added | 131,126 | $27M | 0.3% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 128,755 | $27M | 0.3% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 126,315 | $26M | 0.3% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 126,155 | $26M | 0.3% | 2026-Q2 |
| RIVERBRIDGE PARTNERS LLC trimmed | 124,379 | $26M | 0.3% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 124,212 | $26M | 0.3% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 109,702 | $23M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 106,853 | $22M | 0.3% | 2026-Q2 |
| ARIEL INVESTMENTS, LLC added | 99,589 | $21M | 0.3% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 93,395 | $20M | 0.2% | 2026-Q2 |
| Fivespan Partners, LP new | 90,000 | $19M | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 88,032 | $18M | 0.2% | 2026-Q2 |
| UBS Group AG added | 85,012 | $18M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 82,600 | $17M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System added | 79,137 | $17M | 0.2% | 2026-Q2 |
| WHITTIER TRUST CO trimmed | 77,650 | $15M | 0.2% | 2026-Q2 |
| Nuveen, LLC added | 77,591 | $16M | 0.2% | 2026-Q2 |
| FIFTH THIRD BANCORP trimmed | 75,720 | $16M | 0.2% | 2026-Q2 |
| KENNEDY CAPITAL MANAGEMENT LLC trimmed | 74,724 | $16M | 0.2% | 2026-Q2 |
| North Berkeley Wealth Management, LLC trimmed | 72,440 | $15M | 0.2% | 2026-Q2 |
| DF DENT & CO INC added | 69,301 | $15M | 0.2% | 2026-Q2 |
| COOKE & BIELER LP trimmed | 67,499 | $14M | 0.2% | 2026-Q2 |
| River Road Asset Management, LLC trimmed | 67,424 | $14M | 0.2% | 2026-Q2 |
| Robeco Schweiz AG added | 63,500 | $13M | 0.2% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 60,601 | $13M | 0.2% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 55,935 | $12M | 0.1% | 2026-Q2 |
| REGIONS FINANCIAL CORP trimmed | 55,497 | $12M | 0.1% | 2026-Q2 |
| Legal & General Group Plc trimmed | 54,462 | $11M | 0.1% | 2026-Q2 |
| MARSHALL WACE, LLP added | 53,334 | $11M | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 53,153 | $11M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 51,245 | $9M | 0.1% | 2026-Q2 |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC added | 51,123 | $11M | 0.1% | 2026-Q2 |
| Callan Family Office, LLC trimmed | 51,088 | $11M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 47,372 | $10M | 0.1% | 2026-Q2 |
| EULAV Asset Management | 46,200 | $10M | 0.1% | 2026-Q2 |
| Ceredex Value Advisors LLC trimmed | 45,200 | $9M | 0.1% | 2026-Q2 |
| TEACHER RETIREMENT SYSTEM OF TEXAS added | 43,562 | $9M | 0.1% | 2026-Q2 |
| CHOREO, LLC added | 43,481 | $9M | 0.1% | 2026-Q2 |
| Retirement Systems of Alabama trimmed | 42,548 | $9M | 0.1% | 2026-Q2 |
| Public Sector Pension Investment Board added | 41,884 | $9M | 0.1% | 2026-Q2 |
| BARCLAYS PLC trimmed | 41,456 | $9M | 0.1% | 2026-Q2 |
| WHITTIER TRUST CO OF NEVADA INC trimmed | 40,806 | $8M | 0.1% | 2026-Q2 |
| STIFEL FINANCIAL CORP trimmed | 40,710 | $9M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 40,089 | $8M | 0.1% | 2026-Q2 |
| Rafferty Asset Management, LLC added | 39,569 | $8M | 0.1% | 2026-Q2 |
| Vest Financial, LLC added | 39,344 | $8M | 0.1% | 2026-Q2 |
| Bridgewater Associates, LP trimmed | 38,770 | $8M | 0.1% | 2026-Q2 |
| SummitTX Capital, L.P. new | 37,871 | $8M | 0.1% | 2026-Q2 |
| Berkeley, Inc trimmed | 37,728 | $8M | 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.