Northern Trust Corporation
MX ˙ BMV ˙ US6658591044
SecurityMX:NTRS / Northern Trust Corporation
InstitutionCalamos Advisors LLC
Latest Disclosed Ownership76,022 shares
Latest Disclosed Value $ 10,610,391
Calamos Advisors LLC ownership in NTRS / Northern Trust Corporation

On May 4, 2026 - Calamos Advisors LLC filed a 13F-HR form disclosing ownership of 76,022 shares of Northern Trust Corporation (MX:NTRS) valued at $10,610,391 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 76,022 shares of Northern Trust Corporation. This represents a change in shares of 0.00% during the quarter.

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)
2026-05-04 2026-03-31 13F NORTHERN TR COM 665859104 76,022 0 0.00 10,610 2.19 0.0374
2026-01-29 2025-12-31 13F NORTHERN TR COM 665859104 76,022 -3,087 -3.90 10,384 -2.49 0.0390
2025-10-20 2025-09-30 13F NORTHERN TR COM 665859104 79,109 0 0.00 10,648 6.16 0.0393
2025-08-08 2025-06-30 13F NORTHERN TR COM 665859104 79,109 0 0.00 10,030 28.52 0.0395
2025-04-29 2025-03-31 13F NORTHERN TR COM 665859104 79,109 881 1.13 7,804 -2.67 0.0340
2025-01-24 2024-12-31 13F NORTHERN TR COM 665859104 78,228 0 0.00 8,018 13.86 0.0335
2024-11-07 2024-09-30 13F NORTHERN TR COM 665859104 78,228 -1,919 -2.39 7,043 4.64 0.0305
2024-07-25 2024-06-30 13F NORTHERN TR COM 665859104 80,147 -2,925 -3.52 6,731 -8.88 0.0299
2024-05-08 2024-03-31 13F NORTHERN TR COM 665859104 83,072 -2,089 -2.45 7,387 2.80 0.0350
2024-01-31 2023-12-31 13F NORTHERN TR COM 665859104 85,161 -1,112 -1.29 7,186 19.87 0.0349
2023-10-26 2023-09-30 13F NORTHERN TR COM 665859104 86,273 0 0.00 5,994 -6.29 0.0311
2023-07-28 2023-06-30 13F NORTHERN TR COM 665859104 86,273 0 0.00 6,396 -15.88 0.0316
2023-05-04 2023-03-31 13F NORTHERN TR COM 665859104 86,273 -54,950 -38.91 7,603 -39.16 0.0371
2023-01-26 2022-12-31 13F NORTHERN TR COM 665859104 141,223 -17,287 -10.91 12,497 -7.86 0.0586
2022-10-24 2022-09-30 13F NORTHERN TR COM 665859104 158,510 89 0.06 13,562 -11.27 0.0620
2022-08-01 2022-06-30 13F NORTHERN TR COM 665859104 158,421 3,114 2.01 15,284 -15.49 0.0659
2022-05-03 2022-03-31 13F NORTHERN TR COM 665859104 155,307 14,814 10.54 18,086 7.63 0.0679
2022-02-01 2021-12-31 13F NORTHERN TR COM 665859104 140,493 3,639 2.66 16,804 13.89 0.0628
2021-10-26 2021-09-30 13F NORTHERN TR COM 665859104 136,854 8,171 6.35 14,754 -0.83 0.0644
2021-07-22 2021-06-30 13F NORTHERN TR COM 665859104 128,683 19,203 17.54 14,878 29.30 0.0680
2021-04-12 2021-03-31 13F NORTHERN TR COM 665859104 109,480 2,016 1.88 11,507 14.97 0.0628
2021-01-27 2020-12-31 13F NORTHERN TR COM 665859104 107,464 -2,887 -2.62 10,009 16.33 0.0581
2020-10-26 2020-09-30 13F NORTHERN TR COM 665859104 110,351 -5,788 -4.98 8,604 -6.62 0.0554
2020-07-27 2020-06-30 13F NORTHERN TR COM 665859104 116,139 -4,705 -3.89 9,214 1.04 0.0651
2020-04-28 2020-03-31 13F NORTHERN TR COM 665859104 120,844 -44,790 -27.04 9,119 -48.18 0.0716
2020-01-15 2019-12-31 13F NORTHERN TRUST COMMON STOCK 665859104 165,634 -41,032 -19.85 17,597 -8.76 0.0870
2019-10-21 2019-09-30 13F NORTHERN TRUST COMMON STOCK 665859104 206,666 39,536 23.66 19,286 28.21 0.1050
2019-08-07 2019-06-30 13F NORTHERN TRUST COMMON STOCK 665859104 167,130 0 0.00 15,042 -0.45 0.0835
2019-04-12 2019-03-31 13F NORTHERN TRUST COMMON STOCK 665859104 167,130 -1,250 -0.74 15,110 7.35 0.0943
2019-01-24 2018-12-31 13F NORTHERN TRUST COMMON STOCK 665859104 168,380 -670 -0.40 14,075 -18.48 0.0929
2018-10-22 2018-09-30 13F NORTHERN TRUST COMMON STOCK 665859104 169,050 -60 -0.04 17,265 -0.78 0.0950
2018-07-17 2018-06-30 13F NORTHERN TRUST COMMON STOCK 665859104 169,110 1,450 0.86 17,400 0.63 0.1063
2018-04-13 2018-03-31 13F NORTHERN TRUST COMMON STOCK 665859104 167,660 146,435 689.92 17,291 715.61 0.1125
2018-02-13 2017-12-31 13F NORTHERN TRUST COMMON STOCK 665859104 21,225 21,225 2,120 0.0108
2017-10-25 2017-09-30 13F NORTHERN TRUST COMMON STOCK 665859104 0 -2,355 -100.00 0 -100.00
2017-08-09 2017-06-30 13F NORTHERN TRUST COMMON STOCK 665859104 2,355 0 0.00 229 12.25 0.0017
2017-04-20 2017-03-31 13F NORTHERN TRUST COMMON STOCK 665859104 2,355 0 0.00 204 -2.86 0.0016
2017-02-06 2016-12-31 13F NORTHERN TRUST COMMON STOCK 665859104 2,355 2,355 0.00 210 0.0017
2016-11-14 2016-09-30 13F NORTHERN TRUST COMMON STOCK 665859104 0 -3,200 -100.00 0 -100.00
2016-07-26 2016-06-30 13F NORTHERN TRUST COMMON STOCK 665859104 3,200 0 0.00 212 1.44 0.0015
2016-04-25 2016-03-31 13F NORTHERN TRUST COMMON STOCK 665859104 3,200 0 0.00 209 -9.52 0.0014
2016-02-05 2015-12-31 13F NORTHERN TRUST COMMON STOCK 665859104 3,200 3,200 231 0.0015
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.