Marsh & McLennan Companies, Inc.
DE ˙ DB ˙ US5717481023
135,70 € ↓ -3,10 (-2,23%)
2026-06-03
AKTIENPREIS
SecurityDE:MSN / Marsh & McLennan Companies, Inc.
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership849,616 shares
Latest Disclosed Value $ 147,366
Natixis Advisors, L.p. reports 1.61% decrease in ownership of MSN / Marsh & McLennan Companies, Inc.

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 849,616 shares of Marsh & McLennan Companies, Inc. (DE:MSN) valued at $127,145,034 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 863,503 shares of Marsh & McLennan Companies, Inc.. This represents a change in shares of -1.61% during the quarter. The current value of the position is $115,292,891 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)
2026-05-13 2026-03-31 13F MARSH & MCLENNAN COS COM 571748102 849,616 -13,887 -1.61 147 -8.12 0.1998
2026-02-10 2025-12-31 13F MARSH & MCLENNAN COS COM 571748102 863,503 74,059 9.38 160 0.63 0.2270
2025-11-13 2025-09-30 13F MARSH & MCLENNAN COS INC COM 571748102 789,444 -20,560 -2.54 159 -10.17 0.2322
2025-08-13 2025-06-30 13F MARSH & MCLENNAN COS COM 571748102 810,004 5,251 0.65 177 -9.69 0.2810
2025-05-08 2025-03-31 13F MARSH & MCLENNAN COS COM 571748102 804,753 16,022 2.03 196 17.37 0.3629
2025-02-10 2024-12-31 13F MARSH & MCLENNAN COS COM 571748102 788,731 29,431 3.88 168 -1.18 0.3130
2024-11-06 2024-09-30 13F MARSH & MCLENNAN COM 571748102 759,300 44,938 6.29 169 12.67 0.3303
2024-08-01 2024-06-30 13F MARSH & MCLENNAN COS COM 571748102 714,362 69,745 10.82 151 13.64 0.3273
2024-04-25 2024-03-31 13F MARSH & MCLENNAN COS COM 571748102 644,617 39,197 6.47 133 15.79 0.3053
2024-02-06 2023-12-31 13F MARSH & MCLENNAN COS COM 571748102 605,420 4,011 0.67 115 0.00 0.3020
2023-11-13 2023-09-30 13F MARSH & MCLENNAN COS COM 571748102 601,409 14,748 2.51 114 3.64 0.3500
2023-08-15 2023-06-30 13F MARSH & MCLENNAN COS COM 571748102 586,661 54,594 10.26 110 25.00 0.3407
2023-05-11 2023-03-31 13F MARSH & MCLENNAN COS COM 571748102 532,067 24,895 4.91 89 6.02 0.3050
2023-01-27 2022-12-31 13F MARSH & MCLENNAN COS COM 571748102 507,172 49,448 10.80 84 -99.88 0.3173
2022-11-14 2022-09-30 13F MARSH & MCLENNAN COS COM 571748102 457,724 66,696 17.06 68,334 12.56 0.2891
2022-08-12 2022-06-30 13F MARSH & MCLENNAN COS COM 571748102 391,028 41,716 11.94 60,707 1.98 0.2670
2022-05-12 2022-03-31 13F MARSH & MCLENNAN COS COM 571748102 349,312 38,648 12.44 59,530 10.24 0.2270
2022-02-08 2021-12-31 13F MARSH & MCLENNAN COS COM 571748102 310,664 23,431 8.16 54,000 24.15 0.2062
2021-11-15 2021-09-30 13F MARSH & MCLENNAN COS COM 571748102 287,233 12,929 4.71 43,496 12.72 0.1789
2021-08-12 2021-06-30 13F MARSH & MCLENNAN COS COM 571748102 274,304 11,484 4.37 38,589 20.55 0.1801
2021-05-05 2021-03-31 13F MARSH & MCLENNAN COS COM 571748102 262,820 7,615 2.98 32,010 7.20 0.1671
2021-02-12 2020-12-31 13F MARSH & MCLENNAN COS COM 571748102 255,205 -34,079 -11.78 29,859 -10.01 0.1720
2020-11-12 2020-09-30 13F MARSH & MCLENNAN COS COM 571748102 289,284 717 0.25 33,181 7.09 0.2088
2020-08-11 2020-06-30 13F MARSH & MCLENNAN COS COM 571748102 288,567 117,745 68.93 30,983 109.78 0.2056
2020-04-27 2020-03-31 13F MARSH & MCLENNAN COS COM 571748102 170,822 20,673 13.77 14,769 -11.71 0.1204
2020-02-10 2019-12-31 13F MARSH & MCLENNAN COS COM 571748102 150,149 42,498 39.48 16,728 55.32 0.1180
2019-11-12 2019-09-30 13F MARSH & MCLENNAN COS CL A 571748102 107,651 9,742 9.95 10,770 10.28 0.0855
2019-08-12 2019-06-30 13F MARSH & MCLENNAN COS COM 571748102 97,909 -15,142 -13.39 9,766 -7.61 0.0798
2019-05-15 2019-03-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 113,051 15,742 16.18 10,570 36.21 0.0925
2019-05-15 2019-03-31 13F MARSH & MCLENNAN COS COM 571748102 113,051 15,742 10,570
2019-02-13 2018-12-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 97,309 16,338 20.18 7,760 15.86 0.0766
2019-02-13 2018-12-31 13F MARSH & MCLENNAN COS COM 571748102 97,309 16,338 7,760
2018-11-13 2018-09-30 13F MARSH & MCLENNAN COS COM 571748102 80,971 53 0.07 6,698 0.98 0.0590
2018-08-14 2018-06-30 13F/A-1 MARSH & MCLENNAN COS COM 571748102 80,918 1,499 1.89 6,633 1.13 0.0634
2018-08-14 2018-06-30 13F MARSH & MCLENNAN COS COM 571748102 80,918 6,633
2018-05-10 2018-03-31 13F MARSH & MCLENNAN COS COM 571748102 79,419 2,502 3.25 6,559 4.78 0.0647
2018-02-14 2017-12-31 13F MARSH & MCLENNAN COS COM 571748102 76,917 4,295 5.91 6,260 2.88 0.0638
2017-11-14 2017-09-30 13F MARSH & MCLENNAN COS COM 571748102 72,622 1,889 2.67 6,085 10.34 0.0643
2017-07-27 2017-06-30 13F MARSH & MCLENNAN COS COM 571748102 70,733 5,358 8.20 5,515 14.16 0.0597
2017-05-12 2017-03-31 13F MARSH & MCLENNAN COS COM 571748102 65,375 248 0.38 4,831 9.75 0.0535
2017-02-07 2016-12-31 13F MARSH & MCLENNAN COS COM 571748102 65,127 -21,227 -24.58 4,402 -24.19 0.0529
2016-11-04 2016-09-30 13F MARSH & MCLENNAN COS COM 571748102 86,354 22,246 34.70 5,807 32.31 0.0752
2016-08-01 2016-06-30 13F MARSH and MCLENNAN COS COM 571748102 64,108 2,109 3.40 4,389 16.45 0.0607
2016-05-06 2016-03-31 13F MARSH and MCLENNAN COS COM 571748102 61,999 7,635 14.04 3,769 25.05 0.0564
2016-02-12 2015-12-31 13F MARSH and MCLENNAN COS COM 571748102 54,364 -5,454 -9.12 3,014 -3.49 0.0494
2015-11-12 2015-09-30 13F MARSH and MCLENNAN COS COM 571748102 59,818 -14,799 -19.83 3,123 -26.17 0.0542
2015-08-14 2015-06-30 13F MARSH and MCLENNAN COS COM 571748102 74,617 -1,141 -1.51 4,230 -0.45 0.0718
2015-05-15 2015-03-31 13F MARSH and MCLENNAN COS COM 571748102 75,758 20,968 38.27 4,249 35.49 0.0746
2015-02-05 2014-12-31 13F MARSH and MCLENNAN COS COM 571748102 54,790 5,269 10.64 3,136 20.99 0.0587
2014-11-03 2014-09-30 13F MARSH and MCLENNAN COS COM 571748102 49,521 -18,312 -27.00 2,592 -26.26 0.0520
2014-08-13 2014-06-30 13F MARSH & MCLENNAN COS COM 571748102 67,833 4,885 7.76 3,515 13.28 0.0504
2014-05-13 2014-03-31 13F MARSH and MCLENNAN COM 571748102 62,948 9,511 17.80 3,103 20.09 0.0478
2014-02-12 2013-12-31 13F MARSH and MCLENNAN COM 571748102 53,437 5,639 11.80 2,584 24.17 0.0423
2013-10-30 2013-09-30 13F MARSH & MCLENNAN COS COM 571748102 47,798 -21,252 -30.78 2,081 -24.49 0.0383
2013-07-19 2013-06-30 13F MARSH and MCLENNAN COM 571748102 69,050 69,050 2,756 0.0549
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.