Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in TRS held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BANK OF AMERICA CORP /DE/ | 3.8M | $138.2M | +1.7% | 10.214% | 0.01% |
| 2 | Allspring Global Investments Holdings, LLC | 2.5M | $91.2M | -2.0% | 6.666% | 0.15% |
| 3 | BlackRock, Inc. | 2.5M | $89.7M | +4.2% | 6.632% | 0.00% |
| 4 | DIMENSIONAL FUND ADVISORS LP | 2.3M | $81.2M | +4.2% | 6.002% | 0.02% |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.8M | $63.8M | — | 4.715% | 0.00% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 1.6M | $56.8M | — | 4.200% | 0.00% |
| 7 | Jefferies Financial Group Inc. | 1.5M | $55.7M | -0.2% | 4.116% | 0.38% |
| 8 | MORGAN STANLEY | 1.5M | $53.6M | +85.6% | 3.960% | 0.00% |
| 9 | Permian Investment Partners, LP | 1.2M | $43.2M | +46.0% | 3.194% | 4.78% |
| 10 | ADVISORY RESEARCH INC | 1.1M | $40.2M | +2.2% | 2.974% | 4.95% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 873K | $31.4M | -0.4% | 2.317% | 0.00% |
| 12 | STATE STREET CORP | 817K | $29.3M | -3.6% | 2.169% | 0.00% |
| 13 | Bellecapital International Ltd. | 686K | $24.6M | 0.0% | 1.821% | 4.58% |
| 14 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 622K | $22.4M | -11.3% | 1.652% | 0.01% |
| 15 | Nuveen, LLC | 565K | $20.3M | -33.1% | 1.500% | 0.01% |
| 16 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 484K | $17.4M | -2.8% | 1.285% | 0.00% |
| 17 | TWO SIGMA INVESTMENTS, LP | 470K | $16.9M | +125.2% | 1.249% | 0.01% |
| 18 | CITADEL ADVISORS LLC | 445K | $16.0M | +332.9% | 1.181% | 0.01% |
| 19 | FRANKLIN RESOURCES INC | 439K | $15.8M | 0.0% | 1.166% | 0.00% |
| 20 | LOOMIS SAYLES & CO L P | 437K | $15.7M | -3.4% | 1.160% | 0.02% |
| 21 | WELLINGTON MANAGEMENT GROUP LLP | 404K | $14.5M | -5.8% | 1.073% | 0.00% |
| 22 | JANE STREET GROUP, LLC | 390K | $14.0M | +67.0% | 1.037% | 0.13% |
| 23 | KENNEDY CAPITAL MANAGEMENT, INC. | 377K | $13.5M | -44.5% | 1.001% | 0.29% |
| 24 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 357K | $12.8M | +56.4% | 0.949% | 0.01% |
| 25 | FIRST MANHATTAN CO | 341K | $12.3M | -0.3% | 0.906% | 0.03% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in TRS — a direct measure of their conviction.
Filings activity in TRS during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 190 | 5.9% | 78.03% | 3.66 pp | $1.21B | 4.5% |
| Q4 2025 | 202 | 2.9% | 81.69% | 14.72 pp | $1.27B | 15% |
| Q3 2025 | 208 | +26% | 96.41% | +25.85 pp | $1.50B | +37% |
| Q2 2025 | 165 | +9.3% | 70.56% | +11.95 pp | $1.10B | +20% |
| Q1 2025 | 151 | +3.4% | 58.61% | 4.57 pp | $912M | 7.2% |
| Q4 2024 | 146 | 2.0% | 63.18% | +0.68 pp | $983M | +1.1% |
| Q3 2024 | 149 | 8.0% | 62.50% | 2.81 pp | $972M | 4.3% |
| Q2 2024 | 162 | — | 65.31% | — | $1.02B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying TRS stock.
Based on Q1 2026 13F filings, institutional ownership of TriMas Corporation stands at 78.0%, held across 190 reporting institutions.
BANK OF AMERICA CORP /DE/ is the largest reported institutional holder of TRS, with approximately 3,845,726 shares worth $0.14B as of Q1 2026.
Yes — 3 widely-followed marquee investors appear among the top 25 institutional holders of TRS, including TWO SIGMA INVESTMENTS, LP, CITADEL ADVISORS LLC, JANE STREET GROUP, LLC.
Our composite Smart Money Score for TRS is 45 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
30 institutions opened new positions in TRS during Q1 2026, while 42 fully exited. 97 added to existing positions and 62 trimmed.
TRS institutional ownership fell by 3.66 percentage points quarter-over-quarter, with a net change of -12 holders.
The top 10 institutions account for 58.8% of all reported 13F value in TRS, and the top 25 account for 81.6%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
TriMas Corporation (TRS) Institutional Ownership