Ken Griffin Marsh & Mclennan Companies, Inc. Transaction History

Citadel Advisors LLC

$618 Billion
Q3 2025

A detailed history of Ken Griffin (Citadel Advisors LLC) transactions in Marsh & Mclennan Companies, Inc. stock. As of the latest transaction made, Citadel Advisors LLC holds 391,529 shares of MMC stock, worth $70.8 Million. This represents 0.01% of its overall portfolio holdings.

Number of Shares

391,529

Previous 140,823 178.03%

Holding current value

$70.8 Million

Previous $30.8 Million 156.27%

% of portfolio

0.01%

Previous 0.01%

33 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	BUY	$196.15 - $217.83 $49.2 Million - $54.6 Million	250,706 Added 178.03%	391,529 $78.9 Million
Q2 2025 Aug 14, 2025	SELL	$212.1 - $244.27 $13.4 Million - $15.5 Million	-63,352 Reduced 31.03%	140,823 $30.8 Million
Q1 2025 May 15, 2025	SELL	$208.48 - $244.03 $37 Million - $43.3 Million	-177,319 Reduced 46.48%	204,175 $49.8 Million
Q4 2024 Feb 14, 2025	BUY	$209.89 - $233.24 $10.8 Million - $12 Million	51,433 Added 15.58%	381,494 $81 Million
Q3 2024 Nov 14, 2024	BUY	$210.25 - $231.86 $36.5 Million - $40.2 Million	173,474 Added 110.78%	330,061 $73.6 Million

Q2 2024 Aug 14, 2024	BUY	$196.29 - $215.75 $20.1 Million - $22.1 Million	102,610 Added 190.1%	156,587 $33 Million
Q1 2024 May 15, 2024	BUY	$190.17 - $207.9 $10.2 Million - $11.2 Million	53,853 Added 43429.84%	53,977 $11.1 Million
Q4 2023 Feb 14, 2024	SELL	$184.9 - $201.86 $21.6 Million - $23.6 Million	-116,805 Reduced 99.89%	124 $23,000
Q3 2023 Nov 14, 2023	SELL	$183.99 - $198.55 $27.4 Million - $29.6 Million	-148,996 Reduced 56.03%	116,929 $22.3 Million
Q2 2023 Aug 14, 2023	BUY	$167.72 - $188.08 $22.9 Million - $25.7 Million	136,614 Added 105.65%	265,925 $50 Million
Q1 2023 May 15, 2023	SELL	$154.08 - $175.66 $20.2 Million - $23.1 Million	-131,315 Reduced 50.38%	129,311 $21.5 Million
Q4 2022 Feb 14, 2023	BUY	$151.9 - $173.89 $2.21 Million - $2.53 Million	14,549 Added 5.91%	260,626 $43.1 Million
Q3 2022 Nov 14, 2022	BUY	$148.35 - $173.16 $16.4 Million - $19.1 Million	110,483 Added 81.48%	246,077 $36.7 Million
Q2 2022 Aug 15, 2022	SELL	$144.34 - $178.7 $10.6 Million - $13.1 Million	-73,219 Reduced 35.06%	135,594 $21.1 Million
Q1 2022 May 16, 2022	BUY	$147.31 - $171.84 $8.65 Million - $10.1 Million	58,732 Added 39.13%	208,813 $35.6 Million
Q4 2021 Feb 14, 2022	SELL	$151.74 - $173.89 $31 Million - $35.6 Million	-204,502 Reduced 57.67%	150,081 $26.1 Million
Q3 2021 Nov 15, 2021	SELL	$139.04 - $160.48 $21.4 Million - $24.7 Million	-153,648 Reduced 30.23%	354,583 $53.7 Million
Q2 2021 Aug 16, 2021	BUY	$123.15 - $140.94 $58.1 Million - $66.4 Million	471,443 Added 1281.51%	508,231 $71.5 Million
Q1 2021 May 17, 2021	SELL	$107.6 - $121.88 $30.2 Million - $34.2 Million	-280,542 Reduced 88.41%	36,788 $4.48 Million
Q4 2020 Feb 16, 2021	BUY	$102.95 - $118.69 $24.8 Million - $28.6 Million	241,079 Added 316.17%	317,330 $37.1 Million
Q3 2020 Nov 16, 2020	BUY	$107.35 - $118.91 $4.94 Million - $5.47 Million	46,035 Added 152.35%	76,251 $8.75 Million
Q2 2020 Aug 14, 2020	SELL	$79.9 - $111.49 $29.4 Million - $41.1 Million	-368,552 Reduced 92.42%	30,216 $3.24 Million
Q1 2020 May 15, 2020	BUY	$76.69 - $119.45 $21.3 Million - $33.2 Million	278,077 Added 230.4%	398,768 $34.5 Million
Q4 2019 Feb 14, 2020	BUY	$95.25 - $112.32 $4.1 Million - $4.83 Million	43,043 Added 55.43%	120,691 $13.4 Million
Q3 2019 Nov 14, 2019	SELL	$95.66 - $103.13 $83.7 Million - $90.2 Million	-874,922 Reduced 91.85%	77,648 $7.77 Million
Q2 2019 Aug 14, 2019	SELL	$92.5 - $99.75 $110 Million - $119 Million	-1,188,772 Reduced 55.52%	952,570 $95 Million
Q1 2019 May 15, 2019	BUY	$78.01 - $93.9 $66.4 Million - $79.9 Million	851,235 Added 65.98%	2,141,342 $0
Q4 2018 Feb 14, 2019	BUY	$75.52 - $89.1 $97 Million - $114 Million	1,284,316 Added 22177.79%	1,290,107 $103 Million
Q3 2018 Nov 13, 2018	BUY	$82.24 - $87.73 $73,193 - $78,079	890 Added 18.16%	5,791 $0
Q2 2018 Aug 10, 2018	SELL	$79.09 - $84.03 $1.88 Million - $1.99 Million	-23,708 Reduced 82.87%	4,901 $0
Q1 2018 May 11, 2018	SELL	$79.31 - $85.87 $9.97 Million - $10.8 Million	-125,671 Reduced 81.46%	28,609 $2.36 Million
Q4 2017 Feb 09, 2018	SELL	$80.62 - $85.97 $45.6 Million - $48.6 Million	-565,303 Reduced 78.56%	154,280 $12.6 Million
Q3 2017 Nov 09, 2017	BUY	$76.88 - $84.22 $55.3 Million - $60.6 Million	719,583	719,583 $60.3 Million

Others Institutions Holding MMC

# of Institutions

1,796

Shares Held

426M

Call Options Held

601K

Put Options Held

628K

View Full List

About MARSH & MCLENNAN COMPANIES, INC.

Ticker MMC
Exchange NYSE
Sector Financial Services
Industry Insurance Brokers
Shares Outstandng 496,009,984
Market Cap $89.7B
Description
Marsh & McLennan Companies, Inc., a professional services company, provides advice and solutions to clients in the areas of risk, strategy, and people worldwide. It operates in two segments, Risk and Insurance Services, and Consulting. The Risk and Insurance Services segment offers risk management services, such as risk advice, risk transfer...

More about MMC

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