Marsh & McLennan Companies, Inc.
DE ˙ DB ˙ US5717481023
138,20 € ↑2,50 (1,84%)
2026-06-04
AKTIENPREIS
SecurityDE:MSN / Marsh & McLennan Companies, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership4,965,079 shares
Latest Disclosed Value $ 861,192,952
Northern Trust Corp reports 6.28% decrease in ownership of MSN / Marsh & McLennan Companies, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 4,965,079 shares of Marsh & McLennan Companies, Inc. (DE:MSN) valued at $743,024,072 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 5,297,560 shares of Marsh & McLennan Companies, Inc.. This represents a change in shares of -6.28% during the quarter. The current value of the position is $686,173,918 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)
2026-05-14 2026-03-31 13F MARSH & MCLENNAN COS COM 571748102 4,965,079 -332,481 -6.28 861,193 -12.37 0.0233
2026-02-17 2025-12-31 13F MARSH & MCLENNAN COS COM 571748102 5,297,560 -326,347 -5.80 982,803 -13.29 0.0258
2025-11-14 2025-09-30 13F MARSH & MCLENNAN COS COM 571748102 5,623,907 -103,269 -1.80 1,133,386 -9.49 0.0330
2025-08-13 2025-06-30 13F MARSH & MCLENNAN COS COM 571748102 5,727,176 -166,235 -2.82 1,252,190 -12.93 0.1722
2025-05-13 2025-03-31 13F MARSH & MCLENNAN COS COM 571748102 5,893,411 -40,929 -0.69 1,438,169 14.09 0.2135
2025-02-14 2024-12-31 13F MARSH & MCLENNAN COS COM 571748102 5,934,340 726,713 13.95 1,260,513 8.50 0.1785
2024-11-13 2024-09-30 13F MARSH & MCLENNAN COS COM 571748102 5,207,627 -243,989 -4.48 1,161,770 1.13 0.1902
2024-08-14 2024-06-30 13F MARSH & MCLENNAN COS COM 571748102 5,451,616 -8,981 -0.16 1,148,765 2.13 0.1936
2024-05-14 2024-03-31 13F MARSH & MCLENNAN COS COM 571748102 5,460,597 -242,660 -4.25 1,124,774 4.09 0.1943
2024-02-13 2023-12-31 13F MARSH & MCLENNAN COS COM 571748102 5,703,257 -276,564 -4.62 1,080,596 -5.04 0.1956
2023-11-13 2023-09-30 13F MARSH & MCLENNAN COS COM 571748102 5,979,821 271,408 4.75 1,137,960 5.99 0.2204
2023-08-11 2023-06-30 13F MARSH & MCLENNAN COS COM 571748102 5,708,413 -319,002 -5.29 1,073,638 6.95 0.2063
2023-05-15 2023-03-31 13F MARSH & MCLENNAN COS COM 571748102 6,027,415 -43,766 -0.72 1,003,866 -0.08 0.1990
2023-02-13 2022-12-31 13F MARSH & MCLENNAN COS COM 571748102 6,071,181 2,705 0.04 1,004,659 10.89 0.2108
2022-11-14 2022-09-30 13F MARSH & MCLENNAN COS COM 571748102 6,068,476 -36,320 -0.59 905,963 -4.41 0.2069
2022-08-12 2022-06-30 13F MARSH & MCLENNAN COS COM 571748102 6,104,796 33,028 0.54 947,769 -8.41 0.2030
2022-05-13 2022-03-31 13F MARSH & MCLENNAN COS COM 571748102 6,071,768 -49,305 -0.81 1,034,752 -2.75 0.1820
2022-02-08 2021-12-31 13F MARSH & MCLENNAN COS COM 571748102 6,121,073 -55,634 -0.90 1,063,966 13.75 0.1743
2021-11-15 2021-09-30 13F MARSH & MCLENNAN COS COM 571748102 6,176,707 -163,238 -2.57 935,338 4.87 0.1656
2021-08-13 2021-06-30 13F MARSH & MCLENNAN COS COM 571748102 6,339,945 -63,156 -0.99 891,904 14.36 0.1571
2021-05-12 2021-03-31 13F MARSH & MCLENNAN COS COM 571748102 6,403,101 -136,956 -2.09 779,898 1.92 0.1451
2021-02-11 2020-12-31 13F MARSH & MCLENNAN COS COM 571748102 6,540,057 -322,815 -4.70 765,187 -2.79 0.1490
2020-11-16 2020-09-30 13F MARSH & MCLENNAN COS COM 571748102 6,862,872 163,866 2.45 787,172 9.44 0.1726
2020-08-14 2020-06-30 13F MARSH & MCLENNAN COS COM 571748102 6,699,006 -21,882 -0.33 719,273 23.78 0.1704
2020-05-14 2020-03-31 13F MARSH & MCLENNAN COS COM 571748102 6,720,888 -60,201 -0.89 581,089 -23.08 0.1668
2020-02-14 2019-12-31 13F MARSH & MCLENNAN COS COM 571748102 6,781,089 42,539 0.63 755,481 12.06 0.1691
2019-11-13 2019-09-30 13F MARSH & MCLENNAN COS COM 571748102 6,738,550 -137,032 -1.99 674,192 -1.70 0.1614
2019-08-13 2019-06-30 13F MARSH & MCLENNAN COS COM 571748102 6,875,582 48,927 0.72 685,839 6.99 0.1627
2019-05-13 2019-03-31 13F MARSH & MCLENNAN COS COM 571748102 6,826,655 53,038 0.78 641,023 18.67 0.1583
2019-02-12 2018-12-31 13F MARSH & MCLENNAN COS COM 571748102 6,773,617 235,923 3.61 540,195 -0.11 0.1515
2018-11-14 2018-09-30 13F MARSH & MCLENNAN COS COM 571748102 6,537,694 -131,428 -1.97 540,798 -1.07 0.1324
2018-09-18 2018-06-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 6,669,122 106,883 1.63 546,668 0.87 0.1388
2018-08-14 2018-06-30 13F MARSH & MCLENNAN COS COM 571748102 6,702,422 140,183 549,398
2018-05-09 2018-03-31 13F MARSH & MCLENNAN COS COM 571748102 6,562,239 -141,830 -2.12 541,975 -0.67 0.1410
2018-02-14 2017-12-31 13F MARSH & MCLENNAN COS COM 571748102 6,704,069 -111,008 -1.63 545,645 -4.47 0.1382
2017-11-13 2017-09-30 13F MARSH & MCLENNAN COS COM 571748102 6,815,077 461,849 7.27 571,173 15.32 0.1489
2017-08-11 2017-06-30 13F MARSH & MCLENNAN COS COM 571748102 6,353,228 273,397 4.50 495,297 10.25 0.1385
2017-05-12 2017-03-31 13F MARSH & MCLENNAN COS COM 571748102 6,079,831 29,387 0.49 449,238 9.85 0.1295
2017-02-13 2016-12-31 13F MARSH & MCLENNAN COS COM 571748102 6,050,444 -335,634 -5.26 408,949 -4.78 0.1254
2016-11-09 2016-09-30 13F MARSH & MCLENNAN COS COM 571748102 6,386,078 150,316 2.41 429,463 0.60 0.1338
2016-08-12 2016-06-30 13F MARSH & MCLENNAN COS COM 571748102 6,235,762 -9,383 -0.15 426,900 13.36 0.1386
2016-08-19 2016-03-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 6,245,145 -15,183 -0.24 376,595 8.49 0.1249
2016-05-13 2016-03-31 13F Marsh & Mclennan Cos COMM 571748102 6,245,116 379,641
2016-02-12 2015-12-31 13F Marsh & Mclennan Cos COMM 571748102 6,260,328 -1,088,680 -14.81 347,134 -9.54 0.1151
2015-11-12 2015-09-30 13F MARSH & MCLENNAN COS COM 571748102 7,349,008 7,349,008 0.00 383,764 0.1281
2015-08-13 2015-06-30 13F Marsh & Mclennan Cos COMM 571748102 0 -7,541,715 -100.00 0 -100.00
2015-05-14 2015-03-31 13F Marsh & Mclennan Cos COMM 571748102 7,541,715 297,681 4.11 423,015 2.02 0.1272
2015-02-12 2014-12-31 13F Marsh & Mclennan Cos COM 571748102 7,244,034 -46,314 -0.64 414,648 8.67 0.1252
2014-11-13 2014-09-30 13F Marsh & Mclennan Cos COMM 571748102 7,290,348 -176,395 -2.36 381,577 -1.38 0.1198
2014-08-14 2014-06-30 13F MARSH & MCLENNAN COS com 571748102 7,466,743 602,539 8.78 386,927 14.34 0.1206
2014-05-14 2014-03-31 13F MARSH & MCLENNAN COS COMM 571748102 6,864,204 -206,428 -2.92 338,405 -1.03 0.1065
2014-02-21 2013-12-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 7,070,632 29,191 0.41 341,936 11.51 0.1097
2014-02-12 2013-12-31 13F MARSH & MCLENNAN COS COM 571748102 7,070,632 341,936
2013-11-13 2013-09-30 13F MARSH & MCLENNAN COS COM 571748102 7,041,441 -274,749 -3.76 306,655 5.00 0.1080
2013-08-09 2013-06-30 13F MARSH & MCLENNAN COS COM 571748102 7,316,190 7,316,190 292,063 0.1058
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.