GATX Corporation
US ˙ NYSE ˙ US3614481030

SecurityGATX / GATX Corporation
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership282,556 shares
Latest Disclosed Value $ 48,244
Natixis Advisors, L.p. reports 8.62% increase in ownership of GATX / GATX Corporation

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 282,556 shares of GATX Corporation (US:GATX) valued at $48,243,611 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 260,123 shares of GATX Corporation. This represents a change in shares of 8.62% during the quarter. The current value of the position is $47,127,515 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F GATX COM 361448103 282,556 22,433 8.62 48 9.09 0.0671
2026-02-10 2025-12-31 13F GATX COM 361448103 260,123 -22,426 -7.94 44 -10.20 0.0625
2025-11-13 2025-09-30 13F GATX COM 361448103 282,549 42,942 17.92 49 36.11 0.0721
2025-08-13 2025-06-30 13F GATX COM 361448103 239,607 41,352 20.86 37 20.00 0.0584
2025-05-08 2025-03-31 13F GATX COM 361448103 198,255 18,363 10.21 31 11.11 0.0569
2025-02-10 2024-12-31 13F GATX COM 361448103 179,892 12,241 7.30 28 22.73 0.0521
2024-11-06 2024-09-30 13F GATX COM 361448103 167,651 3,580 2.18 22 4.76 0.0433
2024-08-01 2024-06-30 13F GATX COM 361448103 164,071 14,326 9.57 22 5.00 0.0472
2024-04-25 2024-03-31 13F GATX COM 361448103 149,745 13,230 9.69 20 25.00 0.0461
2024-02-06 2023-12-31 13F GATX COM 361448103 136,515 7,637 5.93 16 14.29 0.0432
2023-11-13 2023-09-30 13F GATX COM 361448103 128,878 -20,048 -13.46 14 -26.32 0.0429
2023-08-15 2023-06-30 13F GATX COM 361448103 148,926 14,455 10.75 19 35.71 0.0592
2023-05-11 2023-03-31 13F GATX COM 361448103 134,471 14,768 12.34 15 16.67 0.0509
2023-01-27 2022-12-31 13F GATX COM 361448103 119,703 58,666 96.12 13 -99.77 0.0481
2022-11-14 2022-09-30 13F GATX COM 361448103 61,037 -28,697 -31.98 5,197 -38.49 0.0220
2022-08-12 2022-06-30 13F GATX COM 361448103 89,734 13,495 17.70 8,449 -10.15 0.0372
2022-05-12 2022-03-31 13F GATX COM 361448103 76,239 1,616 2.17 9,403 20.94 0.0359
2022-02-08 2021-12-31 13F GATX COM 361448103 74,623 15,411 26.03 7,775 46.62 0.0297
2021-11-15 2021-09-30 13F GATX COM 361448103 59,212 15,104 34.24 5,303 35.90 0.0218
2021-08-12 2021-06-30 13F GATX COM 361448103 44,108 10,127 29.80 3,902 23.87 0.0182
2021-05-05 2021-03-31 13F GATX COM 361448103 33,981 -33,912 -49.95 3,150 -44.22 0.0164
2021-02-12 2020-12-31 13F GATX COM 361448103 67,893 -10,867 -13.80 5,647 12.47 0.0325
2020-11-12 2020-09-30 13F GATX COM 361448103 78,760 4,184 5.61 5,021 10.42 0.0316
2020-08-11 2020-06-30 13F GATX COM 361448103 74,576 32,251 76.20 4,547 71.78 0.0302
2020-04-27 2020-03-31 13F GATX COM 361448103 42,325 42,325 2,647 0.0216
2016-02-12 2015-12-31 13F GATX CORP COM COM 361448103 0 0 0 0.0000
2015-11-12 2015-09-30 13F GATX CORP COM COM 361448103 0 0 0 0.0000
2014-11-03 2014-09-30 13F GATX COM 361448103 0 -8,878 -100.00 0 -100.00
2014-08-13 2014-06-30 13F GATX COM 361448103 8,878 995 12.62 594 11.03 0.0085
2014-05-13 2014-03-31 13F GATX CORP COM COM 361448103 7,883 -10,103 -56.17 535 -42.96 0.0082
2014-02-12 2013-12-31 13F GATX COM 361448103 17,986 311 1.76 938 11.67 0.0154
2013-10-30 2013-09-30 13F GATX COM 361448103 17,675 620 3.64 840 3.83 0.0155
2013-07-19 2013-06-30 13F GATX COM 361448103 17,055 17,055 809 0.0161
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.