Who owns TriMas Corporation?
Institutional ownership of TRS from SEC Form 13F filings across 146 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
146
13F holders
$852.7M
value, 2026 filers
55.3%
of shares outstanding (19.8M sh)
35
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of TRS's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 2.5M | $113.9M | 0.0% | 7.1% | +1.3% |
| 2 | Allspring Global Investments Holdings, LLC | 1.9M | $82.4M | 0.1% | 5.3% | -24.1% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.7M | $75.7M | 0.0% | 4.7% | -5.3% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 1.4M | $63.4M | 0.0% | 3.9% | -55.5% |
| 5 | AMERICAN CENTURY COMPANIES INC | 1.2M | $51.8M | 0.0% | 3.2% | +399.2% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 1.0M | $45.9M | 0.0% | 2.8% | +16.8% |
| 7 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 579,276 | $26.1M | 0.0% | 1.6% | +62.1% |
| 8 | Nuveen, LLC | 566,498 | $25.5M | 0.0% | 1.6% | +0.3% |
| 9 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 543,685 | $24.5M | 0.0% | 1.5% | -12.6% |
| 10 | TWO SIGMA INVESTMENTS, LP | 453,425 | $20.4M | 0.0% | 1.3% | -3.6% |
| 11 | CITADEL ADVISORS LLC | 432,376 | $19.5M | 0.0% | 1.2% | -2.8% |
| 12 | Sixth Street Partners Management Company, L.P.NEW | 424,865 | $19.1M | 3.3% | 1.2% | new |
| 13 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 424,865 | $19.1M | 0.0% | 1.2% | -12.2% |
| 14 | MORGAN STANLEY | 395,385 | $17.8M | 0.0% | 1.1% | -73.5% |
| 15 | Bank of New York Mellon Corp | 365,929 | $16.5M | 0.0% | 1% | +102.0% |
| 16 | FIRST MANHATTAN CO. LLC. | 329,720 | $14.8M | 0.0% | 0.9% | -3.3% |
| 17 | JANE STREET GROUP, LLC | 319,484 | $14.4M | 0.0% | 0.9% | -18.1% |
| 18 | BANK OF AMERICA CORP /DE/ | 309,554 | $13.9M | 0.0% | 0.9% | -92.0% |
| 19 | LORD, ABBETT & CO. LLC | 285,097 | $12,838 | 0.0% | 0.8% | 0.0% |
| 20 | NORTHERN TRUST CORP | 283,632 | $12.8M | 0.0% | 0.8% | -6.9% |
| 21 | ACADIAN ASSET MANAGEMENT LLCNEW | 281,455 | $12,661 | 0.0% | 0.8% | new |
| 22 | NORGES BANKNEW | 244,600 | $11.0M | 0.0% | 0.7% | new |
| 23 | FIRST TRUST ADVISORS LP | 216,998 | $9.8M | 0.0% | 0.6% | +423.2% |
| 24 | GOLDMAN SACHS GROUP INC | 204,456 | $9.2M | 0.0% | 0.6% | -30.2% |
| 25 | D. E. Shaw & Co., Inc. | 199,770 | $9.0M | 0.0% | 0.6% | -0.1% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.