Northern Trust Corporation
MX ˙ BMV ˙ US6658591044
SecurityMX:NTRS / Northern Trust Corporation
InstitutionPrimecap Management Co/ca/
Latest Disclosed Ownership6,549,037 shares
Latest Disclosed Value $ 914,049,094
Primecap Management Co/ca/ reports 0.89% decrease in ownership of NTRS / Northern Trust Corporation

On May 11, 2026 - Primecap Management Co/ca/ filed a 13F-HR form disclosing ownership of 6,549,037 shares of Northern Trust Corporation (MX:NTRS) valued at $914,049,094 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 6,607,717 shares of Northern Trust Corporation. This represents a change in shares of -0.89% 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)
2026-05-11 2026-03-31 13F NORTHERN TR COM 665859104 6,549,037 -58,680 -0.89 914,049 1.27 0.7197
2026-02-11 2025-12-31 13F NORTHERN TR COM 665859104 6,607,717 -933,650 -12.38 902,548 -11.08 0.6832
2025-11-12 2025-09-30 13F NORTHERN TR COM 665859104 7,541,367 -252,390 -3.24 1,015,068 2.72 0.7774
2025-08-11 2025-06-30 13F NORTHERN TR COM 665859104 7,793,757 1,270,748 19.48 988,170 53.56 0.7831
2025-05-09 2025-03-31 13F NORTHERN TR COM 665859104 6,523,009 -197,598 -2.94 643,495 -6.59 0.5320
2025-02-10 2024-12-31 13F NORTHERN TR COM 665859104 6,720,607 -364,510 -5.14 688,862 7.99 0.5335
2024-11-08 2024-09-30 13F NORTHERN TR COM 665859104 7,085,117 38,360 0.54 637,873 7.79 0.4690
2024-08-09 2024-06-30 13F NORTHERN TR COM 665859104 7,046,757 261,285 3.85 591,787 -1.92 0.4284
2024-05-14 2024-03-31 13F NORTHERN TR COM 665859104 6,785,472 -106,430 -1.54 603,364 3.75 0.4500
2024-02-09 2023-12-31 13F NORTHERN TR COM 665859104 6,891,902 394,855 6.08 581,539 28.83 0.4604
2023-11-13 2023-09-30 13F NORTHERN TR COM 665859104 6,497,047 264,805 4.25 451,415 -2.30 0.3810
2023-08-11 2023-06-30 13F NORTHERN TR COM 665859104 6,232,242 348,010 5.91 462,058 -10.90 0.3861
2023-05-15 2023-03-31 13F NORTHERN TR COM 665859104 5,884,232 1,101,290 23.03 518,577 22.52 0.4522
2023-02-13 2022-12-31 13F NORTHERN TR COM 665859104 4,782,942 623,820 15.00 423,243 18.94 0.3875
2022-11-14 2022-09-30 13F NORTHERN TR COM 665859104 4,159,122 -45,380 -1.08 355,854 -12.28 0.3443
2022-08-11 2022-06-30 13F NORTHERN TR COM 665859104 4,204,502 -91,840 -2.14 405,650 -18.92 0.3626
2022-05-11 2022-03-31 13F NORTHERN TR COM 665859104 4,296,342 279,000 6.94 500,309 4.12 0.3774
2022-02-11 2021-12-31 13F NORTHERN TR COM 665859104 4,017,342 90,505 2.30 480,514 13.50 0.3326
2021-11-12 2021-09-30 13F NORTHERN TR COM 665859104 3,926,837 -8,300 -0.21 423,352 -6.95 0.2988
2021-08-10 2021-06-30 13F NORTHERN TR COM 665859104 3,935,137 -32,760 -0.83 454,981 9.09 0.3057
2021-05-14 2021-03-31 13F NORTHERN TR COM 665859104 3,967,897 -292,580 -6.87 417,066 5.10 0.2908
2021-02-08 2020-12-31 13F NORTHERN TR COM 665859104 4,260,477 -78,660 -1.81 396,821 17.29 0.2950
2020-11-13 2020-09-30 13F NORTHERN TRUST COM 665859104 4,339,137 -66,000 -1.50 338,323 -3.20 0.2791
2020-08-13 2020-06-30 13F NORTHERN TRUST COM 665859104 4,405,137 -165,000 -3.61 349,504 1.35 0.2999
2020-05-14 2020-03-31 13F NORTHERN TRUST COM 665859104 4,570,137 -154,160 -3.26 344,863 -31.29 0.3382
2020-02-14 2019-12-31 13F NORTHERN TRUST COM 665859104 4,724,297 -25,825 -0.54 501,909 13.23 0.3640
2019-11-13 2019-09-30 13F NORTHERN TRUST COM 665859104 4,750,122 -97,585 -2.01 443,281 1.60 0.3545
2019-08-14 2019-06-30 13F NORTHERN TRUST COM 665859104 4,847,707 -22,430 -0.46 436,294 -0.91 0.3226
2019-05-14 2019-03-31 13F NORTHERN TRUST COM 665859104 4,870,137 6,400 0.13 440,309 8.30 0.3240
2019-02-12 2018-12-31 13F NORTHERN TRUST COM 665859104 4,863,737 1,462,356 42.99 406,560 17.04 0.3294
2018-11-13 2018-09-30 13F NORTHERN TRUST COM 665859104 3,401,381 121,014 3.69 347,383 2.92 0.2345
2018-08-13 2018-06-30 13F NORTHERN TRUST COM 665859104 3,280,367 84,560 2.65 337,517 2.41 0.2502
2018-05-14 2018-03-31 13F NORTHERN TRUST COM 665859104 3,195,807 330,350 11.53 329,584 15.15 0.2473
2018-02-13 2017-12-31 13F NORTHERN TRUST COM 665859104 2,865,457 91,450 3.30 286,230 12.24 0.2197
2017-11-13 2017-09-30 13F NORTHERN TRUST COM 665859104 2,774,007 30,450 1.11 255,014 -4.38 0.2111
2017-08-11 2017-06-30 13F NORTHERN TRUST COM 665859104 2,743,557 189,607 7.42 266,701 20.61 0.2291
2017-05-12 2017-03-31 13F NORTHERN TRUST COM 665859104 2,553,950 592,550 30.21 221,121 26.60 0.2007
2017-02-13 2016-12-31 13F NORTHERN TRUST COM 665859104 1,961,400 0 0.00 174,663 30.97 0.1719
2016-11-14 2016-09-30 13F NORTHERN TRUST COM 665859104 1,961,400 151,000 8.34 133,356 11.17 0.1331
2016-08-12 2016-06-30 13F NORTHERN TRUST COM 665859104 1,810,400 35,000 1.97 119,957 3.68 0.1277
2016-05-12 2016-03-31 13F NORTHERN TRUST COM 665859104 1,775,400 1,775,400 115,703 0.1200
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.