Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
380 institutional managers reported holding GATX for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 66%. 37 opened new positions; 46 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| State Farm Mutual Automobile Insurance CO | 5.43M | 15.16% | $926.1M | unchanged | ≤2013 |
| BlackRock | 4.49M | 12.55% | $766.7M | added +3.1% | ≤2013 |
| Vanguard Group | 3.89M | 10.86% | $663.1M | added +1.1% | ≤2013 |
| Earnest Partners LLC | 2.62M | 7.30% | $446.2M | trimmed -3.2% | 2013 Q4 |
| Dimensional Fund Advisors | 1.47M | 4.11% | $250.9M | trimmed -0.8% | ≤2013 |
| State Street | 1.32M | 3.69% | $225.2M | added +2.7% | ≤2013 |
| American Century Companies INC | 1.26M | 3.52% | $215.2M | trimmed -1.3% | 2019 Q4 |
| Pacer Advisors, INC. | 1.12M | 3.13% | $191.2M | added +24248.6% | 2022 Q4 |
| Gamco Investors, INC. et al | 1.10M | 3.08% | $187.9M | trimmed -8.1% | ≤2013 |
| Bank OF America CORP /DE/ | 1.01M | 2.81% | $171.6M | added +0.8% | ≤2013 |
| Geode Capital | 915.4k | 2.56% | $156.2M | added +3.4% | ≤2013 |
| GAMCO (Gabelli) | 845.5k | 2.36% | $144.3M | trimmed -7.5% | ≤2013 |
| Wellington Management | 842.9k | 2.35% | $143.8M | trimmed -16.7% | ≤2013 |
| SEI Investments CO | 764.0k | 2.13% | $130.4M | trimmed -0.7% | 2021 Q1 |
| Northern Trust | 608.9k | 1.70% | $103.9M | added +1.7% | ≤2013 |
| Vaughan Nelson Investment Management, L.p. | 597.5k | 1.67% | $102.0M | added +23.1% | 2020 Q1 |
| AllianceBernstein | 580.2k | 1.62% | $99.0M | trimmed -5.2% | ≤2013 |
| FMR (Fidelity) | 547.7k | 1.53% | $93.5M | added +60.1% | 2018 Q3 |
| Charles Schwab Investment Management | 424.7k | 1.19% | $72.5M | trimmed -0.9% | ≤2013 |
| Morgan Stanley | 315.8k | 0.88% | $53.9M | added +2.9% | ≤2013 |
| Ensign Peak Advisors, INC | 312.0k | 0.87% | $53.2M | trimmed -22.3% | 2019 Q4 |
| BNY Mellon | 298.2k | 0.83% | $50.9M | trimmed -1.1% | ≤2013 |
| Natixis Advisors, LLC | 282.6k | 0.79% | $48.2M | added +8.6% | 2020 Q1 |
| Ameriprise Financial INC | 223.1k | 0.62% | $38.1M | trimmed -1.5% | ≤2013 |
| UBS | 210.2k | 0.59% | $35.9M | added +6.7% | ≤2013 |
| Goldman Sachs | 206.9k | 0.58% | $35.3M | trimmed -17.2% | ≤2013 |
| Tudor Investment | 181.9k | 0.51% | $31.0M | added +53% | 2020 Q4 |
| ProShare Advisors LLC | 180.5k | 0.50% | $30.8M | added +316.1% | 2013 Q3 |
| NEW York State Common Retirement Fund | 178.7k | 0.50% | $30.5M | trimmed -0.5% | ≤2013 |
| Envestnet Asset Management INC | 178.3k | 0.50% | $30.4M | added +6% | ≤2013 |
| Jones Financial Companies Lllp | 172.8k | 0.48% | $29.5M | added +61389.3% | 2024 Q3 |
| Janus Henderson | 143.1k | 0.40% | $24.4M | unchanged | 2018 Q1 |
| Eulav Asset Management | 137.2k | 0.38% | $23.4M | added +37% | 2018 Q3 |
| Walleye Capital LLC | 131.8k | 0.37% | $22.5M | trimmed -9.8% | 2025 Q2 |
| Wells Fargo & COMPANY/MN | 127.8k | 0.36% | $21.8M | trimmed -16.8% | ≤2013 |
| Rhumbline Advisers | 108.2k | 0.30% | $18.5M | added +1.3% | ≤2013 |
| Loomis Sayles & CO L P | 106.8k | 0.30% | $18.2M | added +61.8% | 2025 Q4 |
| Nuveen | 106.6k | 0.30% | $18.2M | added +7.3% | 2019 Q2 |
| Invesco | 102.3k | 0.29% | $17.5M | trimmed -8.1% | ≤2013 |
| Retirement Systems of Alabama | 92.5k | 0.26% | $15.8M | added +1% | ≤2013 |
| Harbor Island Capital LLC (focused) | 83.4k | 0.23% | $14.2M | unchanged | 2017 Q4 |
| Principal Financial Group INC | 80.3k | 0.22% | $13.7M | added +3.8% | ≤2013 |
| First Trust Advisors LP | 69.2k | 0.19% | $11.8M | added +117.7% | ≤2013 |
| Clearbridge Investments, LLC | 67.6k | 0.19% | $11.5M | trimmed -16.3% | 2016 Q3 |
| Swiss National Bank | 67.1k | 0.19% | $11.4M | added +0.6% | ≤2013 |
| CalPERS | 53.7k | 0.15% | $9.2M | added +3.8% | ≤2013 |
| Philadelphia Financial Management of San Francisco, LLC (focused) | 50.8k | 0.14% | $8.7M | trimmed -26.2% | 2025 Q2 |
| Legal & General Group PLC | 48.1k | 0.13% | $8.2M | trimmed -8.4% | ≤2013 |
| Winslow Asset Management INC | 46.7k | 0.13% | $8.0M | trimmed -3% | ≤2013 |
| Hodges Capital Management INC. | 43.3k | 0.12% | $7.4M | opened | 2026 Q1 |
Largest 50 of 380 shown; the full ranked, searchable register is at boothcheck.com/holders/GATX. 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.