What does CUSIP 571748102 represent in this 13F holders report?

CUSIP 571748102 is the security identifier for MRSH - MARSH & MCLENNAN COMPANIES, INC. - Common Stock used to aggregate holder disclosures.

How many institutions held MRSH - MARSH & MCLENNAN COMPANIES, INC. - Common Stock in Q1 2026?

1545 institutional investors reported MRSH - MARSH & MCLENNAN COMPANIES, INC. - Common Stock for Q1 2026. Use the holders table for investor-level position and value details.

MARSH & MCLENNAN COMPANIES, INC. - Common Stock (MRSH)

CUSIP: 571748102

Q1 2026 13F Holders as of 31 Mar 2026

Security type / class: Equity / Common Stock
Total 13F shares: 438,891,724
Total 13F value: $76,148,216,521
Share change: +433,200
Put/Call ratio: 50%
SEC-reported price per share: $173.45
Number of holders: 1,545
Value change: -$112,348,097
Number of buys: 730
Number of sells: 745
Shares outstanding: 484,292,327

Security key

571748102

Report period

Q1 2026

Institutions

1,545

Top holders

MRSH full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2026 MARSH & MCLENNAN COMPANIES, INC. SEC filings MARSH & MCLENNAN COMPANIES, INC. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 571748102

Newer quarter: Q3 2026

Recent filing periods:

Q3 2026

Ownership snapshot

Top reported holders of MRSH - MARSH & MCLENNAN COMPANIES, INC. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

VANGUARD CAPITAL MANAGEME...

Disclosed value leader

VANGUARD GROUP INC

Comparable rows

15/15

Latest evidence

31 Mar 2026

13D/G 3/4/5 13F Lead comparable stake: 7.5% 13D/G row: VANGUARD CAPITAL MANAGEMENT LLC Showing 1-6 of 15 holder rows.

Quick read

VANGUARD CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 7.5%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens VANGUARD CAPITAL MANAGEMENT LLC's linked filing trail.

Comparable ownership Top 5

VANGUARD CAPITAL MANAGEMENT LLC 7.5%

Oscar Fanjul 0.01%

VANGUARD GROUP INC 9.6%

BlackRock, Inc. 8.4%

STATE STREET CORP 4.5%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
VANGUARD CAPITAL MANAGEMENT LLC	13D/G Vanguard Capital Management 13D/G	7.5%	$6,221,420,700 36,418,783 shares	$0	31 Mar 2026
Oscar Fanjul	3/4/5 Director 3/4/5	0.01%	$9,774,326 43,986 shares	—	15 May 2025
VANGUARD GROUP INC	13F Company 13F	9.6%	$8,643,308,715 46,589,633 shares	—	31 Dec 2025
BlackRock, Inc.	13F Company 13F	8.4%	$7,503,346,915 40,444,949 shares	—	31 Dec 2025
STATE STREET CORP	13F Company 13F	4.5%	$4,057,681,752 21,871,937 shares	—	31 Dec 2025
Capital International Investors	13F Company 13F	3.9%	$3,482,556,927 18,766,815 shares	—	31 Dec 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

1,545

438,891,724

Rows available

1,545

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2026 vs Q1 2026 Across Filers

Q1 2026 holders

1,545

Q1 2026 holders

1,545

Holder diff

Investor	Q1 2026 Shares	Q1 2026 Shares	Share Diff	Share Chg %	Q1 2026 value	Q1 2026 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend