Northern Trust Corporation
MX ˙ BMV ˙ US6658591044
SecurityMX:NTRS / Northern Trust Corporation
InstitutionBlair William & Co/il
Latest Disclosed Ownership129,443 shares
Latest Disclosed Value $ 18,066,386
Blair William & Co/il reports 6.01% decrease in ownership of NTRS / Northern Trust Corporation

On May 8, 2026 - Blair William & Co/il filed a 13F-HR form disclosing ownership of 129,443 shares of Northern Trust Corporation (MX:NTRS) valued at $18,066,386 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 137,715 shares of Northern Trust Corporation. This represents a change in shares of -6.01% 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)
2026-05-08 2026-03-31 13F NORTHERN TR COM 665859104 129,443 -8,272 -6.01 18,066 -3.96 0.0518
2026-02-17 2025-12-31 13F NORTHERN TR COM 665859104 137,715 -841 -0.61 18,810 0.86 0.0505
2025-11-12 2025-09-30 13F NORTHERN TR COM 665859104 138,556 -3,013 -2.13 18,650 3.90 0.0496
2025-07-24 2025-06-30 13F NORTHERN TR COM 665859104 141,569 2,480 1.78 17,950 30.81 0.0499
2025-05-09 2025-03-31 13F NORTHERN TR COM 665859104 139,089 -2,202 -1.56 13,721 -5.25 0.0414
2025-02-12 2024-12-31 13F NORTHERN TR COM 665859104 141,291 -3,040 -2.11 14,482 11.45 0.0421
2024-11-12 2024-09-30 13F NORTHERN TR COM 665859104 144,331 -3,524 -2.38 12,994 4.66 0.0382
2024-08-12 2024-06-30 13F NORTHERN TR COM 665859104 147,855 -12,747 -7.94 12,417 -13.05 0.0383
2024-05-09 2024-03-31 13F NORTHERN TR COM 665859104 160,602 -14,948 -8.51 14,281 -3.59 0.0449
2024-02-12 2023-12-31 13F NORTHERN TR COM 665859104 175,550 -14,766 -7.76 14,813 12.02 0.0505
2023-11-09 2023-09-30 13F NORTHERN TR COM 665859104 190,316 -24,311 -11.33 13,223 -16.90 0.0507
2023-08-11 2023-06-30 13F NORTHERN TR COM 665859104 214,627 -6,661 -3.01 15,912 -18.41 0.0583
2023-05-12 2023-03-31 13F NORTHERN TR COM 665859104 221,288 -7,281 -3.19 19,502 -3.58 0.0779
2023-02-10 2022-12-31 13F NORTHERN TR COM 665859104 228,569 -11,609 -4.83 20,226 -1.58 0.0879
2022-11-09 2022-09-30 13F NORTHERN TR COM 665859104 240,178 -712 -0.30 20,550 -11.58 0.0944
2022-08-10 2022-06-30 13F NORTHERN TR COM 665859104 240,890 558 0.23 23,241 -16.96 0.1031
2022-05-13 2022-03-31 13F NORTHERN TR COM 665859104 240,332 839 0.35 27,987 -2.30 0.0981
2022-02-14 2021-12-31 13F NORTHERN TR COM 665859104 239,493 -545 -0.23 28,646 10.69 0.0898
2021-11-12 2021-09-30 13F NORTHERN TR COM 665859104 240,038 9,687 4.21 25,879 -2.83 0.0881
2021-08-12 2021-06-30 13F NORTHERN TR COM 665859104 230,351 -8,605 -3.60 26,633 6.04 0.0923
2021-05-13 2021-03-31 13F NORTHERN TR COM 665859104 238,956 -11,322 -4.52 25,117 7.75 0.0948
2021-02-09 2020-12-31 13F NORTHERN TR COM 665859104 250,278 -273,103 -52.18 23,311 -42.88 0.0855
2020-11-06 2020-09-30 13F NORTHERN TR COM 665859104 523,381 -143,981 -21.57 40,808 -22.93 0.1731
2020-08-12 2020-06-30 13F NORTHERN TR COM 665859104 667,362 -15,403 -2.26 52,948 2.77 0.2525
2020-05-11 2020-03-31 13F NORTHERN TR COM 665859104 682,765 -58,036 -7.83 51,521 -34.54 0.3220
2020-02-13 2019-12-31 13F NORTHERN TR COM 665859104 740,801 2,238 0.30 78,703 14.19 0.4045
2019-11-12 2019-09-30 13F NORTHERN TR COM 665859104 738,563 12,669 1.75 68,923 5.50 0.3971
2019-08-13 2019-06-30 13F NORTHERN TR COM 665859104 725,894 20,320 2.88 65,330 2.41 0.3735
2019-05-14 2019-03-31 13F NORTHERN TR COM 665859104 705,574 -8,682 -1.22 63,791 6.84 0.3889
2019-02-14 2018-12-31 13F NORTHERN TR COM 665859104 714,256 1,056 0.15 59,705 -18.03 0.4360
2018-11-13 2018-09-30 13F NORTHERN TR COM 665859104 713,200 -10,547 -1.46 72,839 -2.18 0.4463
2018-08-13 2018-06-30 13F NORTHERN TR COM 665859104 723,747 -24,367 -3.26 74,466 -3.48 0.5065
2018-05-15 2018-03-31 13F NORTHERN TR COM 665859104 748,114 -14,502 -1.90 77,153 1.28 0.5456
2018-02-14 2017-12-31 13F NORTHERN TR COM 665859104 762,616 4,081 0.54 76,178 9.24 0.5171
2017-11-13 2017-09-30 13F NORTHERN TRUST COM 665859104 758,535 -5,688 -0.74 69,732 -6.14 0.5229
2017-08-04 2017-06-30 13F NORTHERN TRUST COM 665859104 764,223 -7,950 -1.03 74,290 11.04 0.5578
2017-05-10 2017-03-31 13F NORTHERN TRUST COM 665859104 772,173 -4,865 -0.63 66,901 -3.32 0.5392
2017-02-14 2016-12-31 13F NORTHERN TRUST COM 665859104 777,038 -4,982 -0.64 69,195 30.14 0.6189
2016-11-14 2016-09-30 13F NORTHERN TRUST COM 665859104 782,020 -10,469 -1.32 53,170 1.26 0.4700
2016-08-08 2016-06-30 13F NORTHERN TRUST COM 665859104 792,489 11,969 1.53 52,510 3.23 0.4896
2016-05-16 2016-03-31 13F NORTHERN TRUST COM 665859104 780,520 -1,133 -0.14 50,866 -9.73 0.4789
2016-02-16 2015-12-31 13F NORTHERN TRUST COM 665859104 781,653 19,255 2.53 56,349 8.44 0.5291
2015-11-12 2015-09-30 13F NORTHERN TRUST COM 665859104 762,398 7,487 0.99 51,965 -9.97 0.4496
2015-08-03 2015-06-30 13F NORTHERN TRUST COM 665859104 754,911 6,059 0.81 57,720 10.67 0.0863
2015-05-11 2015-03-31 13F NORTHERN TRUST COM 665859104 748,852 748,852 0.00 52,157 0.0803
2015-02-05 2014-12-31 13F NORTHERN TRUST COM 665859104 0 -720,679 -100.00 0 -100.00
2014-11-04 2014-09-30 13F NORTHERN TRUST COM 665859104 720,679 -7,825 -1.07 49,028 4.81 0.0839
2014-08-01 2014-06-30 13F NORTHERN TRUST COM 665859104 728,504 62,009 9.30 46,777 7.05 0.0764
2014-05-06 2014-03-31 13F NORTHERN TRUST COM 665859104 666,495 75,785 12.83 43,695 19.52 0.0723
2014-02-11 2013-12-31 13F NORTHERN TRUST COM 665859104 590,710 35,184 6.33 36,558 21.02 0.0604
2013-11-12 2013-09-30 13F NORTHERN TRUST COM 665859104 555,526 -17,567 -3.07 30,209 -8.96 0.0537
2013-08-07 2013-06-30 13F NORTHERN TRUST COM 665859104 573,093 573,093 33,182 0.0656
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.