Marsh & McLennan Companies, Inc.
DE ˙ DB ˙ US5717481023
135,70 € ↓ -3,10 (-2,23%)
2026-06-03
DEL PRIS
SecurityDE:MSN / Marsh & McLennan Companies, Inc.
InstitutionStrs Ohio
Latest Disclosed Ownership157,270 shares
Latest Disclosed Value $ 27,278,482
Strs Ohio reports 4,797.85% increase in ownership of MSN / Marsh & McLennan Companies, Inc.

On April 24, 2026 - Strs Ohio filed a 13F-HR form disclosing ownership of 157,270 shares of Marsh & McLennan Companies, Inc. (DE:MSN) valued at $23,535,456 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 3,211 shares of Marsh & McLennan Companies, Inc.. This represents a change in shares of 4,797.85% during the quarter. The current value of the position is $21,341,539 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)
2026-04-24 2026-03-31 13F MARSH MCLENNAN COS COM_STK 571748102 157,270 154,059 4,797.85 27,278 4,484.54 0.1082
2026-02-02 2025-12-31 13F MARSH MCLENNAN COS COM_STK 571748102 3,211 -169,134 -98.14 596 -98.29 0.0022
2025-10-30 2025-09-30 13F MARSH & MCLENNAN COS COM_STK 571748102 172,345 4,905 2.93 34,733 -5.13 0.1273
2025-08-04 2025-06-30 13F MARSH & MCLENNAN COS COM_STK 571748102 167,440 10,129 6.44 36,609 -4.63 0.1367
2025-05-28 2025-03-31 13F MARSH & MCLENNAN COS COM_STK 571748102 157,311 -1,298 -0.82 38,389 13.94 0.1608
2025-05-28 2024-12-31 13F MARSH & MCLENNAN COS COM_STK 571748102 158,609 -12,878 -7.51 33,690 -11.94 0.1336
2024-11-01 2024-09-30 13F MARSH & MCLENNAN COS COM_STK 571748102 171,487 -2,003 -1.15 38,257 4.65 0.1472
2024-08-05 2024-06-30 13F MARSH & MCLENNAN COS COM_STK 571748102 173,490 -4,331 -2.44 36,558 101,447.22 0.1444
2024-05-13 2024-03-31 13F MARSH & MCLENNAN COS COM_STK 571748102 177,821 -18,416 -9.38 37 -2.70 0.1459
2024-01-30 2023-12-31 13F MARSH AND MCLENNAN COS. COM 571748102 196,237 -8,984 -4.38 37 -5.13 0.1548
2023-10-26 2023-09-30 13F/A-1 MARSH AND MCLENNAN COS. COM 571748102 205,221 -2,892 -1.39 39 0.00 0.1738
2023-10-26 2023-09-30 13F MARSH AND MCLENNAN COS. COM 571748102 205,221 -2,892 39 0.1738
2023-07-31 2023-06-30 13F MARSH AND MCLENNAN COS. COM 571748102 208,113 -8,723 -4.02 39 8.33 0.1652
2023-08-02 2023-03-31 13F/A-2 MARSH AND MCLENNAN COS. COM 571748102 216,836 401 0.19 36 2.86 0.1564
2023-08-02 2023-03-31 13F/A-1 MARSH AND MCLENNAN COS. COM 571748102 216,836 36
2023-04-27 2023-03-31 13F MARSH AND MCLENNAN COS. COM 571748102 216,836 401 36 0.1864
2023-01-26 2022-12-31 13F MARSH AND MCLENNAN COS. COM 571748102 216,435 -7,532 -3.36 36 -99.90 0.1617
2022-10-27 2022-09-30 13F MARSH AND MCLENNAN COS. COM 571748102 223,967 -22,251 -9.04 33,436 -12.53 0.1593
2022-07-25 2022-06-30 13F MARSH AND MCLENNAN COS. COM 571748102 246,218 -2,494 -1.00 38,225 -9.81 0.1722
2022-04-21 2022-03-31 13F MARSH AND MCLENNAN COS. COM 571748102 248,712 -13,276 -5.07 42,385 -6.92 0.1550
2022-01-24 2021-12-31 13F MARSH AND MCLENNAN COS. COM 571748102 261,988 14,362 5.80 45,538 21.44 0.1581
2021-10-22 2021-09-30 13F MARSH & MCLENNAN COS. COM 571748102 247,626 -13,723 -5.25 37,498 1.99 0.1411
2021-07-26 2021-06-30 13F MARSH & MCLENNAN COS. COM 571748102 261,349 -12,289 -4.49 36,766 10.31 0.1322
2021-04-23 2021-03-31 13F MARSH & MCLENNAN COS. COM 571748102 273,638 -36,568 -11.79 33,329 -8.17 0.1255
2021-01-25 2020-12-31 13F MARSH & MCLENNAN COS. COM 571748102 310,206 -9,473 -2.96 36,294 -1.02 0.1400
2020-12-14 2020-09-30 13F MARSH & MCLENNAN COS. COM 571748102 319,679 -14,119 -4.23 36,667 2.31 0.1535
2020-07-23 2020-06-30 13F MARSH & MCLENNAN COS. COM 571748102 333,798 31,747 10.51 35,839 37.24 0.1566
2020-04-23 2020-03-31 13F MARSH & MCLENNAN COS. COM 571748102 302,051 6,528 2.21 26,115 -20.68 0.1375
2020-01-24 2019-12-31 13F MARSH & MCLENNAN COS. COM 571748102 295,523 -20,062 -6.36 32,924 4.28 0.1379
2019-10-21 2019-09-30 13F/A-1 MARSH & MCLENNAN COS. COM 571748102 315,585 21,576 7.34 31,574 7.66 0.1384
2019-10-21 2019-09-30 13F MARSH & MCLENNAN COS. COM 571748102 315,585 20,062 31,574 139,748.2752
2019-07-25 2019-06-30 13F MARSH & MCLENNAN COS. COM 571748102 294,009 -3,607 -1.21 29,327 4.94 0.1304
2019-04-19 2019-03-31 13F MARSH & MCLENNAN COS. COM 571748102 297,616 808 0.27 27,946 18.07 0.1267
2019-01-23 2018-12-31 13F MARSH & MCLENNAN COS. COM 571748102 296,808 2,842 0.97 23,670 -2.66 0.1202
2018-10-19 2018-09-30 13F MARSH & MCLENNAN COS. COM 571748102 293,966 20,549 7.52 24,316 8.50 0.1066
2018-08-06 2018-06-30 13F MARSH & MCLENNAN COS. COM 571748102 273,417 -6,313 -2.26 22,411 -2.99 0.0965
2018-04-20 2018-03-31 13F MARSH & MCLENNAN COS. COM 571748102 279,730 -5,379 -1.89 23,102 -0.44 0.1022
2018-01-23 2017-12-31 13F MARSH & MCLENNAN COS. COM 571748102 285,109 -6,973 -2.39 23,205 -5.20 0.0991
2017-10-23 2017-09-30 13F MARSH & MCLENNAN COS. COM 571748102 292,082 -251 -0.09 24,479 7.41 0.1051
2017-07-26 2017-06-30 13F MARSH & MCLENNAN COS. COM 571748102 292,333 -16,399 -5.31 22,790 -0.10 0.1015
2017-04-26 2017-03-31 13F MARSH & MCLENNAN COS. COM 571748102 308,732 -6,761 -2.14 22,812 6.98 0.0988
2017-01-24 2016-12-31 13F MARSH & MCLENNAN COS. COM 571748102 315,493 -3,262 -1.02 21,324 -0.52 0.0940
2016-10-27 2016-09-30 13F MARSH & MCLENNAN COS. COM 571748102 318,755 -9,539 -2.91 21,436 -4.62 0.0958
2016-07-26 2016-06-30 13F MARSH & MCLENNAN COS. COM 571748102 328,294 -1,391 -0.42 22,475 12.15 0.0999
2016-04-25 2016-03-31 13F/A-1 MARSH & MCLENNAN COS. COM 571748102 329,685 525 0.16 20,041 9.81 0.0900
2016-01-28 2015-12-31 13F MARSH & MCLENNAN COS. COM 571748102 329,160 -9,441 -2.79 18,251 3.22 0.0816
2015-10-21 2015-09-30 13F MARSH & MCLENNAN COS. COM 571748102 338,601 10,061 3.06 17,681 -5.08 0.0841
2015-08-04 2015-06-30 13F MARSH & MCLENNAN COS. COM 571748102 328,540 -2,990 -0.90 18,628 0.18 0.0818
2015-04-27 2015-03-31 13F/A-1 MARSH & MCLENNAN COS. COM 571748102 331,530 -10,315 -3.02 18,595 -4.97 0.0820
2015-04-21 2015-03-31 13F MARSH & MCLENNAN COS. COM 571748102 18,595,517 18,302
2015-01-23 2014-12-31 13F MARSH & MCLENNAN COS. COM 571748102 341,845 -16,464 -4.59 19,567 4.34 0.0848
2014-10-29 2014-09-30 13F/A-1 MARSH & MCLENNAN COS. COM 571748102 358,309 0 0.00 18,754 1.00 0.0828
2014-10-20 2014-09-30 13F MARSH & MCLENNAN COS. COM 571748102 358,309 18,754
2014-07-24 2014-06-30 13F MARSH & MCLENNAN COS. COM 571748102 358,309 -19,938 -5.27 18,568 -0.43 0.0827
2014-04-28 2014-03-31 13F MARSH & MCLENNAN COS. COM 571748102 378,247 -7,400 -1.92 18,648 -0.01 0.0839
2014-01-30 2013-12-31 13F MARSH & MCLENNAN COS. COM 571748102 385,647 17,700 4.81 18,650 16.39 0.0839
2013-10-24 2013-09-30 13F MARSH & MCLENNAN COS. COM 571748102 367,947 -52,837 -12.56 16,024 -4.61 0.0706
2013-08-12 2013-06-30 13F MARSH & MCLENNAN COS. COM 571748102 420,784 420,784 16,798 0.0722
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.