GATX CORP (GATX) Institutional Ownership Changes & 13F Activity
GATX CORP (GATX). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Invesco Ltd., Wellington Management Group Llp, Ameriprise Financial Inc, Hudson Bay Capital Management Lp, and Xtx Topco Ltd.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | Sell | -330 | -1.0% | 32,467 | $5.75M | Q2 2026 | Sep 09, 2026 |
| Citadel Advisors Llc | Buy | +20,720 | +49.5% | 62,593 | $11.09M | Q2 2026 | Sep 02, 2026 |
| Cornerstone Financial Management Llc | Buy | +3 | — | 3 | $532.00 | Q2 2026 | Aug 28, 2026 |
| Corient Private Wealth Llc | Sell | -53 | -0.6% | 9,054 | $1.60M | Q2 2026 | Aug 27, 2026 |
| California State Teachers Retirement System | Buy | +1,556 | +4.1% | 39,143 | $6.94M | Q2 2026 | Aug 24, 2026 |
| Rehmann Capital Advisory Group | Buy | +179 | +6.6% | 2,884 | $511.11K | Q2 2026 | Aug 20, 2026 |
| Mercer Global Advisors Inc | Buy | +780 | +32.8% | 3,156 | $559.21K | Q2 2026 | Aug 19, 2026 |
| Fulcrum Asset Management Llp | Buy | +876 | — | 876 | $156.22K | Q2 2026 | Aug 18, 2026 |
| Ruggaard & Associates Llc | Buy | +2,530 | — | 2,530 | $448.29K | Q2 2026 | Aug 17, 2026 |
| Integrated Investment Consultants, Llc | Buy | +2,284 | — | 2,284 | $404.70K | Q2 2026 | Aug 17, 2026 |
| United Capital Financial Advisors, Llc | Sell | -1,092 | -28.7% | 2,711 | $480.36K | Q2 2026 | Aug 17, 2026 |
| Public Employees Retirement System Of Ohio | Buy | +16 | +1.2% | 1,310 | $232.12K | Q2 2026 | Aug 17, 2026 |
| Empowered Funds, Llc | Buy | +11 | +0.5% | 2,432 | $430.93K | Q2 2026 | Aug 17, 2026 |
| Transamerica Financial Advisors, Llc | Buy | +3 | +100.0% | 6 | $1.06K | Q2 2026 | Aug 17, 2026 |
| Invesco Ltd. | Buy | +284,778 | — | 284,778 | $50.46M | Q2 2026 | Aug 14, 2026 |
| Wellington Management Group Llp | Sell | -163,217 | -19.4% | 679,715 | $120.44M | Q2 2026 | Aug 14, 2026 |
| Ameriprise Financial Inc | Buy | +152,621 | — | 152,621 | $27.04M | Q2 2026 | Aug 14, 2026 |
| Hudson Bay Capital Management Lp | Buy | +40,178 | — | 40,178 | $7.12M | Q2 2026 | Aug 14, 2026 |
| Xtx Topco Ltd | Buy | +27,222 | +490.9% | 32,767 | $5.81M | Q2 2026 | Aug 14, 2026 |
| Tudor Investment Corp Et Al | Sell | -26,938 | -14.8% | 154,990 | $27.46M | Q2 2026 | Aug 14, 2026 |
| D. E. Shaw & Co., Inc. | Sell | -21,784 | -73.3% | 7,934 | $1.41M | Q2 2026 | Aug 14, 2026 |
| Wells Fargo & Company/Mn | Buy | +21,417 | +16.8% | 149,191 | $26.44M | Q2 2026 | Aug 14, 2026 |
| Squarepoint Ops Llc | Sell | -18,924 | -84.0% | 3,599 | $637.71K | Q2 2026 | Aug 14, 2026 |
| Natixis Advisors, Llc | Buy | +16,416 | +5.8% | 298,972 | $52.97M | Q2 2026 | Aug 14, 2026 |
| Brevan Howard Capital Management Lp | Buy | +14,393 | — | 14,393 | $2.55M | Q2 2026 | Aug 14, 2026 |
| Barclays Plc | Sell | -12,649 | -50.9% | 12,215 | $2.16M | Q2 2026 | Aug 14, 2026 |
| Susquehanna International Group, Llp | Sell | -11,668 | -73.2% | 4,276 | $757.66K | Q2 2026 | Aug 14, 2026 |
| Jones Financial Companies Lllp | Buy | +11,372 | +6.6% | 184,157 | $33.56M | Q2 2026 | Aug 14, 2026 |
| Susquehanna Fundamental Investments, Llc | Buy | +9,732 | +113.8% | 18,287 | $3.24M | Q2 2026 | Aug 14, 2026 |
| Schonfeld Strategic Advisors Llc | Buy | +9,168 | — | 9,168 | $1.62M | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about GATX activity
Which institutional owners are buying GATX?
Institutional owners buying GATX include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in GATX activity?
"Buy" means an investor increased their reported position in GATX compared to the prior reporting period. This reflects growing exposure to GATX CORP (GATX) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in GATX increasing?
Institutional interest in GATX can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related GATX Institutional Insights
- GATX Overview
- GATX 13F Institutional Holders
- GATX Top Institutional Shareholders
- Industrials Sector Institutional Ownership
- Industrials Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Industrials Stocks By Institutional Investors
- Most Sold Industrials Stocks By Institutional Investors
- GATX Insider Trading & SEC Form 4 Activity
- GATX Articles
- Top Institutional Investor Stock Rankings