Marsh & McLennan Companies, Inc.
DE ˙ DB ˙ US5717481023
135,70 € ↓ -3,10 (-2,23%)
2026-06-03
DEL PRIS
SecurityDE:MSN / Marsh & McLennan Companies, Inc.
InstitutionNorges Bank
Latest Disclosed Ownership8,386,530 shares
Latest Disclosed Value $ 1,555,869,046
Norges Bank ownership in MSN / Marsh & McLennan Companies, Inc.

On February 10, 2026 - Norges Bank filed a 13F-HR form disclosing ownership of 8,386,530 shares of Marsh & McLennan Companies, Inc. (DE:MSN) valued at $1,327,587,699 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 0 shares of Marsh & McLennan Companies, Inc.. The current value of the position is $1,138,052,121 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)
2026-02-10 2025-12-31 13F MARSH & MCLENNAN COS COM 571748102 8,386,530 8,386,530 1,555,869 0.1664
2025-11-13 2025-09-30 13F MARSH & MCLENNAN COS COM 571748102 0 -6,076,595 -100.00 0 -100.00
2025-08-13 2025-06-30 13F MARSH & MCLENNAN COS COM 571748102 6,076,595 359,124 6.28 1,328,587 -4.78 0.1658
2026-05-11 2025-03-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 5,717,471 -102,342 -1.76 1,395,234 12.87 0.1958
2025-02-12 2024-12-31 13F MARSH & MCLENNAN COS COM 571748102 5,819,813 32,677 0.56 1,236,186 -4.25 0.1622
2025-11-12 2024-09-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 5,787,136 -295,267 -4.85 1,291,052 0.73 0.1803
2024-08-14 2024-06-30 13F MARSH & MCLENNAN COS COM 571748102 6,082,403 -3,639 -0.06 1,281,684 2.24 0.1915
2025-05-14 2024-03-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 6,086,042 554,415 10.02 1,253,603 19.61 0.1978
2024-02-09 2023-12-31 13F MARSH & MCLENNAN COS COM 571748102 5,531,627 664,522 13.65 1,048,077 13.16 0.1831
2024-11-13 2023-09-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 4,867,105 339,698 7.50 926,210 8.77 0.1879
2024-08-14 2023-06-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 4,527,407 462,970 11.39 851,515 25.79 0.1680
2024-05-15 2023-03-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 4,064,437 81,784 2.05 676,932 2.71 0.1481
2023-02-14 2022-12-31 13F MARSH & MCLENNAN COS COM 571748102 3,982,653 336,385 9.23 659,049 21.07 0.1589
2023-11-13 2022-09-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 3,646,268 -98,630 -2.63 544,351 -6.37 0.1447
2023-08-14 2022-06-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 3,744,898 5,602 0.15 581,395 -8.77 0.1503
2023-05-12 2022-03-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 3,739,296 1,723,969 85.54 637,251 81.91 0.1389
2022-03-09 2021-12-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 2,015,327 -70,645 -3.39 350,304 10.90 0.0720
2022-11-14 2021-09-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 2,085,972 -810,334 -27.98 315,879 -22.47 0.0699
2022-08-15 2021-06-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 2,896,306 -470,255 -13.97 407,452 -0.63 0.0883
2022-05-09 2021-03-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 3,366,561 944,430 38.99 410,047 44.69 0.0939
2021-03-02 2020-12-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 2,422,131 197,955 8.90 283,389 11.08 0.0662
2021-11-12 2020-09-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 2,224,176 -264,238 -10.62 255,113 -4.52 0.0678
2021-08-13 2020-06-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 2,488,414 -694,294 -21.81 267,181 -2.91 0.0769
2021-05-07 2020-03-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 3,182,708 -921,757 -22.46 275,177 -39.82 0.0981
2020-03-03 2019-12-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 4,104,465 -29,796 -0.72 457,278 10.55 0.1276
2020-11-13 2019-09-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 4,134,261 -70,529 -1.68 413,632 -1.38 0.1267
2020-08-13 2019-06-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 4,204,790 -112,529 -2.61 419,427 3.46 0.1296
2020-05-11 2019-03-31 13F/A-2 MARSH & MCLENNAN COS COM 571748102 4,317,319 178,861 4.32 405,396 22.83 0.1310
2019-03-04 2018-12-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 4,138,458 -1,188,274 -22.31 330,042 -25.10 0.1228
2019-12-02 2018-09-30 13F/A-3 MARSH & MCLENNAN COS COM 571748102 5,326,732 1,419,381 36.33 440,627 37.57 0.1431
2019-12-02 2018-09-30 13F/A-2 MARSH & MCLENNAN COS COM 571748102 5,326,732 1,419,381 440,627 0.1431
2019-11-12 2018-09-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 5,326,732 1,419,381 440,627 0.1431
2019-08-12 2018-06-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 3,907,351 1,449,867 59.00 320,287 57.80 0.1099
2019-05-15 2018-03-31 13F/A-2 MARSH & MCLENNAN COS COM 571748102 2,457,484 -246,042 -9.10 202,964 -7.76 0.0734
2018-03-05 2017-12-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 2,703,526 1,054,242 63.92 220,040 59.19 0.0789
2018-11-13 2017-09-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 1,649,284 -225,158 -12.01 138,226 -5.41 0.0525
2018-07-24 2017-06-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 1,874,442 -161,657 -7.94 146,131 -2.87 0.0580
2018-05-11 2017-03-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 2,036,099 -750,596 -26.93 150,448 -20.12 0.0617
2017-03-02 2016-12-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 2,786,695 1,308,000 88.46 188,353 98.31 0.0823
2017-11-13 2016-09-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 1,478,695 97,632 7.07 94,979 0.46 0.0449
2017-08-09 2016-06-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 1,381,063 136,278 10.95 94,547 24.94 0.0449
2017-05-10 2016-03-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 1,244,785 -1,189,240 -48.86 75,671 -43.93 0.0372
2016-04-18 2015-12-31 13F/A-2 MARSH & MCLENNAN COS COM 571748102 2,434,025 -92,794 -3.67 134,966 2.28 0.0671
2016-03-16 2015-12-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 2,434,025 0 134,966 0.0677
2016-11-14 2015-09-30 13F/A-2 MARSH & MCLENNAN COS COM 571748102 2,526,819 7,328 0.29 131,951 -7.63 0.0691
2016-08-12 2015-06-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 2,519,491 435,000 20.87 142,855 22.18 0.0714
2016-05-13 2015-03-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 2,084,491 1,045,368 100.60 116,919 96.57 0.0573
2015-03-19 2014-12-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 1,039,123 -51,573 59,480 0.0303
2016-04-18 2014-12-31 13F/A-2 MARSH & MCLENNAN COS COM 571748102 1,039,123 -51,573 -4.73 59,480 4.19 0.0302
2015-11-12 2014-09-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 1,090,696 -19,033 -1.72 57,087 -0.73 0.0309
2015-08-10 2014-06-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 1,109,729 -1,055,666 -48.75 57,506 -46.13 0.0310
2015-05-12 2014-03-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 2,165,395 -290,000 -11.81 106,754 -10.10 0.0602
2014-03-07 2013-12-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 2,455,395 -734,869 118,743 0.0726
2014-03-20 2013-12-31 13F/A-2 MARSH & MCLENNAN COS COM 571748102 2,455,395 0 118,743 0.0699
2014-05-12 2013-12-31 13F/A-3 MARSH & MCLENNAN COS COM 571748102 2,455,395 -734,869 -23.03 118,743 -14.53 0.0684
2014-11-14 2013-09-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 3,190,264 -993,872 -23.75 138,936 -16.82 0.0811
2014-08-14 2013-06-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 4,184,136 -260,000 -5.85 167,030 -1.02 0.1037
2014-04-04 2013-03-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 4,444,136 403,893 168,744 0.1118
2014-05-12 2013-03-31 13F/A-2 MARSH & MCLENNAN COS COM 571748102 4,444,136 403,893 10.00 168,744 23.09 0.1094
2013-11-14 2012-09-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 4,040,243 426,267 11.79 137,085 14.22 0.0924
2013-08-15 2012-06-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 3,613,976 3,613,976 120,020 0.0963
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.