GATX

Gatx Corp

A global transportation asset lessor, GATX owns and leases railcars—tank cars, covered hoppers, and gondolas—to shippers and railroads across North America, Europe, and India, carrying everything from chemicals and petroleum to grain and cement. The company was founded in Chicago in 1898 when Max Epstein used his commission to buy 48 used refrigerated railcars for a Pittsburgh brewery that needed to ship beer. Its name comes from its old corporate title, General American Transportation Corporation, plus the "X" that railroads assign to private car owners—so the company's initials literally became its brand.

CUSIP: 361448103IndustrialsUS1 holder

Ownership Activity Financials Filings

Schedule 13D / 13G filings

EARNEST PARTNERS LLC

13G/APassive

% of class7.3%

Shares2.61M

FiledMay 15, 2026

Vanguard Portfolio Management

13GPassive

% of class5.71%

Shares2.03M

FiledApr 29, 2026

Vanguard Capital Management

13GPassive

% of class5.19%

Shares1.84M

FiledApr 29, 2026

GAMCO Asset Management Inc.

13D/AActivist

% of class3.1%

Shares1.10M

FiledApr 2, 2026

The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.

GABELLI FUNDS LLC

13D/AActivist

% of class2.4%

Shares845.0K

FiledApr 2, 2026

GAMCO INVESTORS, INC. ET AL

13D/AActivist

% of class0%

Shares0

FiledApr 2, 2026

GABELLI FOUNDATION, INC.

13D/AActivist

% of class0%

Shares1.5K

FiledApr 2, 2026

MJG ASSOCIATES, INC.

13D/AActivist

% of class0%

Shares4.0K

FiledApr 2, 2026

GGCP, INC.

13D/AActivist

% of class0%

Shares1.0K

FiledApr 2, 2026

Associated Capital Group, Inc.

13D/AActivist

% of class0%

Shares100

FiledApr 2, 2026

Holder	Schedule	% of class	Shares	Filed
EARNEST PARTNERS LLC	13G/APassive	7.3%	2.61M	May 15, 2026
Vanguard Portfolio Management	13GPassive	5.71%	2.03M	Apr 29, 2026
Vanguard Capital Management	13GPassive	5.19%	1.84M	Apr 29, 2026
GAMCO Asset Management Inc.	13D/AActivist	3.1%	1.10M	Apr 2, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.
GABELLI FUNDS LLC	13D/AActivist	2.4%	845.0K	Apr 2, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.
GAMCO INVESTORS, INC. ET AL	13D/AActivist	0%	0	Apr 2, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.
GABELLI FOUNDATION, INC.	13D/AActivist	0%	1.5K	Apr 2, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.
MJG ASSOCIATES, INC.	13D/AActivist	0%	4.0K	Apr 2, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.
GGCP, INC.	13D/AActivist	0%	1.0K	Apr 2, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.
Associated Capital Group, Inc.	13D/AActivist	0%	100	Apr 2, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.