TRIMAS CORP (TRS) Institutional Shareholders
TRIMAS CORP (TRS) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $1.33B in TRS holdings during the latest filing period.
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 $96.36M, representing an estimated loss of -15.43% 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
198
Total Reported Value
$1.33B
Largest Holder
Blackrock, Inc.
Largest Position
$113.94M
Insider Transactions (90d)
4
Latest Filing Quarter
Q2 2026
New Institutional Positions
54
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 | $96,355,538 | -$17,585,903 | -15.43% | |
| Dimensional Fund Advisors Lp | 0.02% | 2,259,471 | $101,742,554 | $86,040,656 | -$15,701,898 | -15.43% | |
| Allspring Global Investments Holdings, Llc | 0.13% | 1,904,393 | $82,422,129 | $72,519,285 | -$9,902,844 | -12.01% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,681,687 | $75,726,366 | $64,038,641 | -$11,687,725 | -15.43% | |
| Vanguard Capital Management Llc | 0.00% | 1,408,899 | $63,442,722 | $53,650,874 | -$9,791,848 | -15.43% | |
| Advisory Research Inc | 5.44% | 1,211,587 | $54,557,763 | $46,137,233 | -$8,420,530 | -15.43% | |
| Permian Investment Partners, Lp | 5.95% | 1,165,414 | $52,478,592 | $44,378,965 | -$8,099,627 | -15.43% | |
| American Century Companies Inc | 0.02% | 1,150,388 | $51,801,972 | $43,806,775 | -$7,995,197 | -15.43% | |
| Geode Capital Management, Llc | 0.00% | 1,019,286 | $45,904,115 | $38,814,411 | -$7,089,704 | -15.44% | |
| Jefferies Financial Group Inc. | 0.41% | 981,933 | $44,216,443 | $37,392,009 | -$6,824,434 | -15.43% | |
| Punch & Associates Investment Management, Inc. | 1.80% | 807,292 | $36,352,358 | $30,741,679 | -$5,610,679 | -15.43% | |
| State Street Corp | 0.00% | 784,145 | $35,310,049 | $29,860,242 | -$5,449,807 | -15.43% | |
| Arrowstreet Capital, Limited Partnership | 0.01% | 579,276 | $26,084,798 | $22,058,830 | -$4,025,968 | -15.43% | |
| Nuveen, Llc | 0.01% | 566,498 | $25,509,405 | $21,572,244 | -$3,937,161 | -15.43% | |
| Massachusetts Financial Services Co | 0.01% | 543,685 | $24,482,136 | $20,703,525 | -$3,778,611 | -15.43% | |
| Two Sigma Investments, Lp | 0.02% | 453,425 | $20,417,728 | $17,266,424 | -$3,151,304 | -15.43% | |
| Citadel Advisors Llc | 0.01% | 432,376 | $19,469,891 | $16,464,878 | -$3,005,013 | -15.43% | |
| Loomis Sayles & Co L P | 0.02% | 430,537 | $19,387,081 | $16,394,849 | -$2,992,232 | -15.43% | |
| Charles Schwab Investment Management Inc | 0.00% | 424,865 | $19,131,671 | $16,178,859 | -$2,952,812 | -15.43% | |
| Morgan Stanley | 0.00% | 395,385 | $17,804,261 | $15,056,261 | -$2,748,000 | -15.43% | |
| Bank Of New York Mellon Corp | 0.00% | 365,929 | $16,477,783 | $13,934,576 | -$2,543,207 | -15.43% | |
| Oberweis Asset Management Inc/ | 0.34% | 362,000 | $16,300,860 | $13,784,960 | -$2,515,900 | -15.43% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.02% | 331,556 | $14,929,967 | $12,625,652 | -$2,304,315 | -15.43% |
| First Manhattan Co. Llc. | 0.04% | 329,720 | $14,847,292 | $12,555,738 | -$2,291,554 | -15.43% | |
| Jane Street Group, Llc | 0.01% | 319,484 | $14,386,364 | $12,165,951 | -$2,220,413 | -15.43% | |
| Bank Of America Corp | 0.00% | 309,554 | $13,939,217 | $11,787,816 | -$2,151,401 | -15.43% | |
| Kennedy Capital Management Llc | 0.24% | 302,265 | $13,610,993 | $11,510,251 | -$2,100,742 | -15.43% | |
| Lord, Abbett & Co. Llc | 0.04% | 285,097 | $12,838,000 | $10,856,494 | -$1,981,506 | -15.43% | |
| Northern Trust Corp | 0.00% | 283,632 | $12,771,949 | $10,800,707 | -$1,971,242 | -15.43% | |
| Acadian Asset Management Llc | 0.02% | 281,455 | $12,661,000 | $10,717,806 | -$1,943,194 | -15.35% | |
| Norges Bank | 0.00% | 244,600 | $11,014,338 | $9,314,368 | -$1,699,970 | -15.43% | |
| First Trust Advisors Lp | 0.01% | 216,998 | $9,771,419 | $8,263,284 | -$1,508,135 | -15.43% | |
| Goldman Sachs Group Inc | 0.00% | 204,456 | $9,206,653 | $7,785,684 | -$1,420,969 | -15.43% | |
| D. E. Shaw & Co., Inc. | 0.01% | 199,770 | $8,995,643 | $7,607,242 | -$1,388,401 | -15.43% | |
| Vanguard Fiduciary Trust Co | 0.00% | 190,359 | $8,571,866 | $7,248,871 | -$1,322,995 | -15.43% | |
| Hotchkis & Wiley Capital Management Llc | 0.02% | 179,133 | $8,066,359 | $6,821,385 | -$1,244,974 | -15.43% | |
| Sei Investments Co | 0.01% | 175,345 | $7,898,015 | $6,677,138 | -$1,220,877 | -15.46% | |
| Victory Capital Management Inc | 0.00% | 167,996 | $7,564,860 | $6,397,288 | -$1,167,572 | -15.43% | |
| Fmr Llc | 0.00% | 166,973 | $7,518,782 | $6,358,332 | -$1,160,450 | -15.43% | |
| Kestrel Investment Management Corp | 3.67% | 149,550 | $6,734,237 | $5,694,864 | -$1,039,373 | -15.43% | |
| Lazard Asset Management Llc | 0.01% | 141,680 | $6,379,850 | $5,395,174 | -$984,676 | -15.43% | |
| Barclays Plc | 0.00% | 114,839 | $5,171,198 | $4,373,069 | -$798,129 | -15.43% | |
| Healthcare Of Ontario Pension Plan Trust Fund | 0.01% | 103,200 | $4,647,096 | $3,929,856 | -$717,240 | -15.43% | |
| Sg Americas Securities, Llc | 0.00% | 102,237 | $4,604,000 | $3,893,185 | -$710,815 | -15.44% | |
| Hillsdale Investment Management Inc. | 0.10% | 99,800 | $4,493,994 | $3,800,384 | -$693,610 | -15.43% | |
| Russell Investments Group, Ltd. | 0.00% | 99,171 | $4,456,577 | $3,776,432 | -$680,145 | -15.26% | |
| Xtx Topco Ltd | 0.06% | 97,046 | $4,369,981 | $3,695,512 | -$674,469 | -15.43% | |
| Harbor Capital Advisors, Inc. | 0.30% | 97,011 | $4,368,000 | $3,694,179 | -$673,821 | -15.43% | |
| Gotham Asset Management, Llc | 0.01% | 94,880 | $4,272,446 | $3,613,030 | -$659,416 | -15.43% | |
| Bessemer Group Inc | 0.01% | 91,686 | $4,129,000 | $3,491,403 | -$637,597 | -15.44% |
Frequently asked questions about TRS
Who owns the most TRS stock?
The largest holders of TRS are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for TRIMAS CORP (TRS).
Is TRS widely held by superinvestors?
Many widely followed stocks like TRS appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly TRS is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.