Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
315 institutional managers reported holding TRN for the quarter ended Mar 31, 2026. Together they hold about 87% of shares outstanding; the top 10 hold 59%. 53 opened new positions; 41 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 12.99M | 15.86% | $418.0M | added +3.5% | ≤2013 |
| Vanguard Group | 9.54M | 11.64% | $306.9M | added +3.3% | ≤2013 |
| Capital International Investors | 5.52M | 6.74% | $177.6M | trimmed -38.2% | 2019 Q4 |
| Dimensional Fund Advisors | 4.80M | 5.86% | $154.6M | added +1.7% | ≤2013 |
| State Street | 3.88M | 4.74% | $124.8M | added +24.8% | ≤2013 |
| American Century Companies INC | 3.61M | 4.40% | $116.1M | added +12.4% | 2019 Q4 |
| Jennison Associates LLC | 2.44M | 2.98% | $78.7M | trimmed -12.4% | 2017 Q1 |
| Geode Capital | 1.94M | 2.37% | $62.6M | added +2.6% | ≤2013 |
| Morgan Stanley | 1.70M | 2.08% | $54.7M | added +28.6% | ≤2013 |
| Goldman Sachs | 1.62M | 1.98% | $52.3M | added +40.3% | ≤2013 |
| Mirae Asset Global Etfs Holdings LTD. | 1.39M | 1.70% | $44.7M | added +78.9% | 2018 Q3 |
| Charles Schwab Investment Management | 1.32M | 1.62% | $42.6M | added +1.9% | ≤2013 |
| Bank OF America CORP /DE/ | 1.09M | 1.33% | $35.1M | added +9.2% | ≤2013 |
| Northern Trust | 1.05M | 1.28% | $33.6M | added +0.6% | ≤2013 |
| Gamco Investors, INC. et al | 983.3k | 1.20% | $31.7M | trimmed -8.3% | ≤2013 |
| D. E. Shaw | 980.5k | 1.20% | $31.6M | added +19.1% | 2023 Q4 |
| BNY Mellon | 886.5k | 1.08% | $28.5M | trimmed -3.1% | ≤2013 |
| UBS | 808.7k | 0.99% | $26.0M | added +17.4% | ≤2013 |
| Invesco | 784.6k | 0.96% | $25.3M | trimmed -25.6% | ≤2013 |
| GAMCO (Gabelli) | 550.1k | 0.67% | $17.7M | trimmed -0.8% | ≤2013 |
| Bridgeway Capital Management, LLC | 544.2k | 0.66% | $17.5M | added +3.6% | 2025 Q3 |
| Tctc Holdings, LLC | 486.7k | 0.59% | $15.7M | trimmed -3.6% | 2015 Q2 |
| Nuveen | 433.9k | 0.53% | $14.0M | trimmed -19.1% | 2019 Q2 |
| First Eagle Investment Management | 415.6k | 0.51% | $13.4M | added +4.9% | 2021 Q2 |
| Principal Financial Group INC | 390.9k | 0.48% | $12.6M | added +2.1% | ≤2013 |
| Earnest Partners LLC | 384.4k | 0.47% | $12.4M | trimmed -3.5% | 2025 Q2 |
| Granite Investment Partners, LLC | 381.7k | 0.47% | $12.3M | trimmed -5.3% | 2024 Q4 |
| Raymond James Financial INC | 359.4k | 0.44% | $11.6M | added +5.6% | ≤2013 |
| Voloridge Investment Management | 355.1k | 0.43% | $11.4M | added +802.4% | 2025 Q4 |
| BNP Paribas Financial Markets | 345.7k | 0.42% | $11.1M | added +15.8% | ≤2013 |
| Empowered Funds, LLC | 326.7k | 0.40% | $10.5M | added +6.2% | 2025 Q3 |
| FMR (Fidelity) | 311.0k | 0.38% | $10.0M | added +17.7% | 2018 Q3 |
| Envestnet Asset Management INC | 310.6k | 0.38% | $10.0M | trimmed -3.3% | ≤2013 |
| Victory Capital Management INC | 309.6k | 0.38% | $10.0M | trimmed -0.8% | 2019 Q3 |
| Two Sigma | 303.2k | 0.37% | $9.8M | added +125.5% | 2025 Q1 |
| Public Sector Pension Investment Board | 286.8k | 0.35% | $9.2M | added +3.3% | 2022 Q2 |
| Qube Research & Technologies LTD | 257.7k | 0.32% | $8.3M | added +6% | 2023 Q3 |
| Rhumbline Advisers | 252.9k | 0.31% | $8.1M | unchanged | ≤2013 |
| PDT Partners | 226.2k | 0.28% | $7.3M | added +437.8% | 2025 Q2 |
| Arrowstreet Capital | 208.5k | 0.26% | $6.7M | opened | 2023 Q4 |
| ProShare Advisors LLC | 206.9k | 0.25% | $6.7M | trimmed -10% | 2021 Q2 |
| Legal & General Group PLC | 195.9k | 0.24% | $6.3M | trimmed -7.4% | ≤2013 |
| Citadel Advisors | 188.1k | 0.23% | $6.1M | trimmed -34.8% | 2025 Q1 |
| Wells Fargo & COMPANY/MN | 185.6k | 0.23% | $6.0M | trimmed -25.3% | ≤2013 |
| Healthcare OF Ontario Pension Plan Trust Fund | 183.2k | 0.22% | $5.9M | trimmed -25.8% | 2025 Q3 |
| Stephens INC /AR/ | 167.1k | 0.20% | $5.4M | added +18.8% | 2024 Q2 |
| HRT Financial LP | 163.0k | 0.20% | $5.2M | opened | 2026 Q1 |
| Swiss National Bank | 159.5k | 0.20% | $5.1M | unchanged | ≤2013 |
| Ameriprise Financial INC | 147.7k | 0.18% | $4.8M | trimmed -5.5% | ≤2013 |
| Voleon Capital Management LP | 143.7k | 0.17% | $4.6M | added +67.3% | 2025 Q2 |
Largest 50 of 315 shown; the full ranked, searchable register is at boothcheck.com/holders/TRN. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.