TRS Institutional Ownership & Shareholders
TRIMAS CORP (TRS) is currently held by 200 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $1.33B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of TRS tracked by InsiderSet, reporting ownership valued at approximately $113.94M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $101.01M, representing an estimated loss of -11.35% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 52% of the total disclosed TRS value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Dimensional Fund Advisors Lp, Allspring Global Investments Holdings, Llc, and several other long-term asset managers with concentrated positions in TRIMAS CORP (TRS).
This page ranks the largest institutional TRS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
200
Total Reported Value
$1.33B
Largest Holder
Blackrock, Inc.
Largest Position
$113.94M
Insider Transactions (90d)
2
Latest Filing Quarter
Q2 2026
New Institutional Positions
56
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 2,530,345 | $113,941,441 | $101,011,372 | -$12,930,069 | -11.35% | |
| Dimensional Fund Advisors Lp | 0.02% | 2,259,471 | $101,742,554 | $90,198,082 | -$11,544,472 | -11.35% | |
| Allspring Global Investments Holdings, Llc | 0.13% | 1,904,393 | $82,422,129 | $76,023,369 | -$6,398,760 | -7.76% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,681,687 | $75,726,366 | $67,132,945 | -$8,593,421 | -11.35% | |
| Vanguard Capital Management Llc | 0.00% | 1,408,899 | $63,442,722 | $56,243,248 | -$7,199,474 | -11.35% | |
| Advisory Research Inc | 5.44% | 1,211,587 | $54,557,763 | $48,366,553 | -$6,191,210 | -11.35% | |
| Permian Investment Partners, Lp | 5.95% | 1,165,414 | $52,478,592 | $46,523,327 | -$5,955,265 | -11.35% | |
| American Century Companies Inc | 0.02% | 1,150,388 | $51,801,972 | $45,923,489 | -$5,878,483 | -11.35% | |
| Geode Capital Management, Llc | 0.00% | 1,019,286 | $45,904,115 | $40,689,897 | -$5,214,218 | -11.36% | |
| Jefferies Financial Group Inc. | 0.41% | 981,933 | $44,216,443 | $39,198,765 | -$5,017,678 | -11.35% | |
| Punch & Associates Investment Management, Inc. | 1.80% | 807,292 | $36,352,358 | $32,227,097 | -$4,125,261 | -11.35% | |
| State Street Corp | 0.00% | 784,145 | $35,310,049 | $31,303,068 | -$4,006,981 | -11.35% | |
| Arrowstreet Capital, Limited Partnership | 0.01% | 579,276 | $26,084,798 | $23,124,698 | -$2,960,100 | -11.35% | |
| Nuveen, Llc | 0.01% | 566,498 | $25,509,405 | $22,614,600 | -$2,894,805 | -11.35% | |
| Massachusetts Financial Services Co | 0.01% | 543,685 | $24,482,136 | $21,703,905 | -$2,778,231 | -11.35% | |
| Two Sigma Investments, Lp | 0.02% | 453,425 | $20,417,728 | $18,100,726 | -$2,317,002 | -11.35% | |
| Citadel Advisors Llc | 0.01% | 432,376 | $19,469,891 | $17,260,450 | -$2,209,441 | -11.35% | |
| Loomis Sayles & Co L P | 0.02% | 430,537 | $19,387,081 | $17,187,037 | -$2,200,044 | -11.35% | |
| Charles Schwab Investment Management Inc | 0.00% | 424,865 | $19,131,671 | $16,960,611 | -$2,171,060 | -11.35% | |
| Morgan Stanley | 0.00% | 395,385 | $17,804,261 | $15,783,769 | -$2,020,492 | -11.35% | |
| Bank Of New York Mellon Corp | 0.00% | 365,929 | $16,477,783 | $14,607,886 | -$1,869,897 | -11.35% | |
| Oberweis Asset Management Inc/ | 0.34% | 362,000 | $16,300,860 | $14,451,040 | -$1,849,820 | -11.35% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.02% | 331,556 | $14,929,967 | $13,235,716 | -$1,694,251 | -11.35% |
| First Manhattan Co. Llc. | 0.04% | 329,720 | $14,847,292 | $13,162,422 | -$1,684,870 | -11.35% | |
| Jane Street Group, Llc | 0.01% | 319,484 | $14,386,364 | $12,753,801 | -$1,632,563 | -11.35% | |
| Bank Of America Corp | 0.00% | 309,554 | $13,939,217 | $12,357,396 | -$1,581,821 | -11.35% | |
| Kennedy Capital Management Llc | 0.24% | 302,265 | $13,610,993 | $12,066,419 | -$1,544,574 | -11.35% | |
| Lord, Abbett & Co. Llc | 0.04% | 285,097 | $12,838,000 | $11,381,072 | -$1,456,928 | -11.35% | |
| Northern Trust Corp | 0.00% | 283,632 | $12,771,949 | $11,322,589 | -$1,449,360 | -11.35% | |
| Acadian Asset Management Llc | 0.02% | 281,455 | $12,661,000 | $11,235,684 | -$1,425,316 | -11.26% | |
| Norges Bank | 0.00% | 244,600 | $11,014,338 | $9,764,432 | -$1,249,906 | -11.35% | |
| First Trust Advisors Lp | 0.01% | 216,998 | $9,771,419 | $8,662,560 | -$1,108,859 | -11.35% | |
| Goldman Sachs Group Inc | 0.00% | 204,456 | $9,206,653 | $8,161,884 | -$1,044,769 | -11.35% | |
| D. E. Shaw & Co., Inc. | 0.01% | 199,770 | $8,995,643 | $7,974,818 | -$1,020,825 | -11.35% | |
| Vanguard Fiduciary Trust Co | 0.00% | 190,359 | $8,571,866 | $7,599,131 | -$972,735 | -11.35% | |
| Hotchkis & Wiley Capital Management Llc | 0.02% | 179,133 | $8,066,359 | $7,150,989 | -$915,370 | -11.35% | |
| Sei Investments Co | 0.01% | 175,345 | $7,898,015 | $6,999,772 | -$898,243 | -11.37% | |
| Victory Capital Management Inc | 0.00% | 167,996 | $7,564,860 | $6,706,400 | -$858,460 | -11.35% | |
| Fmr Llc | 0.00% | 166,973 | $7,518,782 | $6,665,562 | -$853,220 | -11.35% | |
| Creative Planning | 0.00% | 194,329 | $7,500,149 | $7,757,614 | +$257,465 | +3.43% | |
| Lazard Asset Management Llc | 0.01% | 141,680 | $6,379,850 | $5,655,866 | -$723,984 | -11.35% | |
| Kestrel Investment Management Corp | 3.10% | 139,150 | $5,370,494 | $5,554,868 | +$184,374 | +3.43% | |
| Barclays Plc | 0.00% | 114,839 | $5,171,198 | $4,584,373 | -$586,825 | -11.35% | |
| Healthcare Of Ontario Pension Plan Trust Fund | 0.01% | 103,200 | $4,647,096 | $4,119,744 | -$527,352 | -11.35% | |
| Sg Americas Securities, Llc | 0.00% | 102,237 | $4,604,000 | $4,081,301 | -$522,699 | -11.35% | |
| Hillsdale Investment Management Inc. | 0.10% | 99,800 | $4,493,994 | $3,984,016 | -$509,978 | -11.35% | |
| Russell Investments Group, Ltd. | 0.00% | 99,171 | $4,456,577 | $3,958,906 | -$497,671 | -11.17% | |
| Xtx Topco Ltd | 0.06% | 97,046 | $4,369,981 | $3,874,076 | -$495,905 | -11.35% | |
| Gotham Asset Management, Llc | 0.01% | 94,880 | $4,272,446 | $3,787,610 | -$484,836 | -11.35% | |
| Bessemer Group Inc | 0.01% | 91,686 | $4,129,000 | $3,660,105 | -$468,895 | -11.36% |
Frequently asked questions about TRS
Who are the largest institutional holders of TRS?
The largest institutional holders of TRS reported in the latest SEC Form 13F filings include Blackrock, Inc., Dimensional Fund Advisors Lp, Allspring Global Investments Holdings, Llc, Vanguard Portfolio Management Llc, and Vanguard Capital Management Llc. InsiderSet ranks institutional holders by their latest reported TRS position.
What is TRS institutional ownership?
This page tracks TRS positions reported by institutional investment managers through SEC Form 13F. TRIMAS CORP (TRS) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own TRS?
InsiderSet currently tracks 200 institutional managers reporting TRS holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of TRS shareholders.
How much TRS stock do institutions own?
Institutional investment managers disclosed approximately $1.33B in TRS holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was TRS institutional ownership last updated?
The latest TRS institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional TRS holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its TRS position after the reporting date.
Are institutions buying or selling TRS?
Institutional buying and selling can be analyzed by comparing TRS positions across consecutive 13F reporting periods. InsiderSet's TRS Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View TRS ownership changes.
How has TRS institutional ownership changed over time?
InsiderSet tracks TRS institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.