Marsh & McLennan Companies, Inc.
DE ˙ DB ˙ US5717481023
135,70 € ↓ -3,10 (-2,23%)
2026-06-03
AKTIENPREIS
SecurityDE:MSN / Marsh & McLennan Companies, Inc.
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership1,981,282 shares
Latest Disclosed Value $ 367,567,437
Alliancebernstein L.p. reports 7.72% increase in ownership of MSN / Marsh & McLennan Companies, Inc.

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 1,981,282 shares of Marsh & McLennan Companies, Inc. (DE:MSN) valued at $296,498,851 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,839,229 shares of Marsh & McLennan Companies, Inc.. This represents a change in shares of 7.72% during the quarter. The current value of the position is $268,859,967 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)
2026-05-15 2026-03-31 13F MARSH & MCLENNAN COS COM 571748102 1,981,282 142,053 7.72 367,567 7.72 0.1190
2026-02-17 2025-12-31 13F MARSH & MCLENNAN COS COM 571748102 1,839,229 647,868 54.38 341,214 42.12 0.1077
2025-11-14 2025-09-30 13F MARSH & MCLENNAN COS COM 571748102 1,191,361 -87,962 -6.88 240,095 -14.16 0.0756
2025-08-14 2025-06-30 13F MARSH & MCLENNAN COS COM 571748102 1,279,323 -113,412 -8.14 279,711 -17.70 0.0912
2025-05-15 2025-03-31 13F MARSH & MCLENNAN COS COM 571748102 1,392,735 54,322 4.06 339,869 19.55 0.1230
2025-02-12 2024-12-31 13F MARSH & MCLENNAN COS COM 571748102 1,338,413 -12,375 -0.92 284,292 -5.66 0.0965
2024-11-14 2024-09-30 13F MARSH & MCLENNAN COS COM 571748102 1,350,788 -16,505 -1.21 301,347 4.59 0.1012
2024-08-14 2024-06-30 13F MARSH & MCLENNAN COS COM 571748102 1,367,293 -17,126 -1.24 288,116 1.04 0.1005
2024-05-14 2024-03-31 13F MARSH & MCLENNAN COS COM 571748102 1,384,419 -156,889 -10.18 285,163 -2.35 0.1009
2024-02-14 2023-12-31 13F MARSH & MCLENNAN COS COM 571748102 1,541,308 -14,846 -0.95 292,032 -1.39 0.1124
2023-11-14 2023-09-30 13F MARSH & MCLENNAN COS COM 571748102 1,556,154 -11,486 -0.73 296,136 0.44 0.1260
2023-08-15 2023-06-30 13F MARSH & MCLENNAN COS COM 571748102 1,567,640 128,485 8.93 294,842 23.01 0.1203
2023-05-15 2023-03-31 13F MARSH & MCLENNAN COS COM 571748102 1,439,155 -32,587 -2.21 239,691 -1.58 0.1027
2023-02-15 2022-12-31 13F MARSH & MCLENNAN COS COM 571748102 1,471,742 155,639 11.83 243,544 23.95 0.1096
2022-11-15 2022-09-30 13F MARSH & MCLENNAN COS COM 571748102 1,316,103 -51,294 -3.75 196,481 -7.45 0.0951
2022-08-15 2022-06-30 13F MARSH & MCLENNAN COS COM 571748102 1,367,397 106,276 8.43 212,288 -1.22 0.0970
2022-05-13 2022-03-31 13F MARSH & MCLENNAN COS COM 571748102 1,261,121 240,416 23.55 214,920 21.14 0.0829
2022-02-14 2021-12-31 13F MARSH & MCLENNAN COS COM 571748102 1,020,705 51,202 5.28 177,419 20.85 0.0627
2021-11-10 2021-09-30 13F MARSH & MCLENNAN COS COM 571748102 969,503 4,021 0.42 146,812 8.09 0.0579
2021-07-30 2021-06-30 13F MARSH & MCLENNAN COS COM 571748102 965,482 231,691 31.57 135,824 51.97 0.0545
2021-05-06 2021-03-31 13F MARSH & MCLENNAN COS COM 571748102 733,791 -2,870 -0.39 89,376 3.70 0.0392
2021-02-08 2020-12-31 13F MARSH & MCLENNAN COS COM 571748102 736,661 -42,802 -5.49 86,189 -3.60 0.0407
2020-11-12 2020-09-30 13F MARSH & MCLENNAN COS COM 571748102 779,463 15,811 2.07 89,404 9.04 0.0481
2020-08-13 2020-06-30 13F MARSH & MCLENNAN COS COM 571748102 763,652 -33,755 -4.23 81,993 18.93 0.0482
2020-05-14 2020-03-31 13F MARSH & MCLENNAN COS COM 571748102 797,407 -6,319 -0.79 68,944 -23.00 0.0494
2020-02-18 2019-12-31 13F MARSH & MCLENNAN COS COM 571748102 803,726 -41,570 -4.92 89,543 5.88 0.0509
2019-11-14 2019-09-30 13F MARSH & MCLENNAN COS COM 571748102 845,296 -59,311 -6.56 84,572 -6.28 0.0527
2019-08-14 2019-06-30 13F MARSH & MCLENNAN COS COM 571748102 904,607 -300,762 -24.95 90,235 -20.28 0.0561
2019-05-14 2019-03-31 13F MARSH & MCLENNAN COS COM 571748102 1,205,369 48,281 4.17 113,184 22.66 0.0737
2019-02-13 2018-12-31 13F MARSH & MCLENNAN COS COM 571748102 1,157,088 -176,498 -13.23 92,278 -16.35 0.0685
2018-11-08 2018-09-30 13F MARSH & MCLENNAN COS COM 571748102 1,333,586 -53,309 -3.84 110,314 -2.96 0.0720
2018-08-13 2018-06-30 13F MARSH & MCLENNAN COS COM 571748102 1,386,895 -62,855 -4.34 113,684 -5.05 0.0791
2018-05-14 2018-03-31 13F MARSH & MCLENNAN COS COM 571748102 1,449,750 -52,489 -3.49 119,735 -2.07 0.0866
2018-02-13 2017-12-31 13F MARSH & MCLENNAN COS COM 571748102 1,502,239 -160,810 -9.67 122,267 -12.28 0.0875
2017-11-13 2017-09-30 13F MARSH & MCLENNAN COS COM 571748102 1,663,049 -64,698 -3.74 139,380 3.48 0.1044
2017-08-10 2017-06-30 13F MARSH & MCLENNAN COS COM 571748102 1,727,747 66,912 4.03 134,695 9.76 0.1042
2017-05-11 2017-03-31 13F MARSH & MCLENNAN COS COM 571748102 1,660,835 165,670 11.08 122,719 21.43 0.0977
2017-02-13 2016-12-31 13F MARSH & MCLENNAN COS COM 571748102 1,495,165 29,470 2.01 101,058 2.53 0.0842
2016-11-10 2016-09-30 13F MARSH & MCLENNAN COS COM 571748102 1,465,695 166,883 12.85 98,568 10.85 0.0832
2016-08-11 2016-06-30 13F MARSH & MCLENNAN COS COM 571748102 1,298,812 50,261 4.03 88,917 17.15 0.0766
2016-05-13 2016-03-31 13F MARSH & MCLENNAN COS COM 571748102 1,248,551 47,536 3.96 75,899 13.97 0.0645
2016-02-16 2015-12-31 13F/A-1 MARSH & MCLENNAN COS COM 571748102 1,201,015 -21,327 -1.74 66,596 4.33 0.0567
2016-02-12 2015-12-31 13F MARSH & MCLENNAN COS COM 571748102 1,201,015 62,717
2015-11-13 2015-09-30 13F MARSH & MCLENNAN COS COM 571748102 1,222,342 30,808 2.59 63,831 -5.52 0.0548
2015-08-14 2015-06-30 13F MARSH & MCLENNAN COS COM 571748102 1,191,534 -842 -0.07 67,560 1.02 0.0558
2015-05-13 2015-03-31 13F MARSH & MCLENNAN COS COM 571748102 1,192,376 59,199 5.22 66,880 3.11 0.0542
2015-02-13 2014-12-31 13F MARSH & MCLENNAN COS COM 571748102 1,133,177 8,593 0.76 64,863 10.20 0.0539
2014-11-13 2014-09-30 13F MARSH & MCLENNAN COS COM 571748102 1,124,584 -24,567 -2.14 58,861 -1.16 0.0496
2014-08-13 2014-06-30 13F MARSH & MCLENNAN COS COM 571748102 1,149,151 -207,656 -15.30 59,549 -10.98 0.0502
2014-05-13 2014-03-31 13F MARSH & MCLENNAN COS COM 571748102 1,356,807 306,539 29.19 66,891 31.70 0.0578
2014-02-13 2013-12-31 13F MARSH & MCLENNAN COS COM 571748102 1,050,268 -10,862 -1.02 50,791 9.91 0.0454
2013-11-14 2013-09-30 13F MARSH & MCLENNAN COS COM 571748102 1,061,130 6,738 0.64 46,212 9.79 0.0456
2013-08-13 2013-06-30 13F MARSH & MCLENNAN COS COM 571748102 1,054,392 1,054,392 42,091 0.0447
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.