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CITADEL ADVISORS LLC

Position in MRSH — Marsh & Mclennan Companies, Inc.

CIK 1423053 MIAMI, FL

Position in MRSH

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$23,673,670
-$128,892,597 QoQ
Shares Held
136,487
-83.4% QoQ
Ownership
0.028%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in MRSH Over Time

Shares Held

Position Value (USD)

Derivatives in MRSH

reported options exposure · as of Mar 31, 2026
CallValue
$19,530,470
CallShares
112,600
PutValue
$1,075,390
PutShares
6,200

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Insurance Brokers

Financial Services · as of Mar 31, 2026

CITADEL ADVISORS LLC holds $479,024,060 across 14 Insurance Brokers names. MRSH ranks #5 (4.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
5 MRSH
Marsh & Mclennan Companies, Inc.
This page
136,487 $23,673,670

All Filings in MRSH

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50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $19,530,470 112,600
2026-03-31 $23,673,670 136,487
2026-03-31 $1,075,390 6,200
2025-12-31 $1,409,952 7,600
2025-12-31 $21,780,048 117,400
2025-12-31 $152,566,267 822,371
2025-09-30 $17,351,733 86,100
2025-09-30 $78,904,839 391,529
2025-09-30 $1,773,464 8,800
2025-06-30 $30,789,540 140,823
2025-06-30 $3,345,192 15,300
2025-06-30 $22,476,192 102,800
2025-03-31 $1,464,180 6,000
2025-03-31 $49,824,824 204,175
2025-03-31 $15,056,651 61,700
2024-12-31 $81,033,140 381,494
2024-12-31 $16,610,462 78,200
2024-12-31 $8,623,846 40,600
2024-09-30 $26,971,581 120,900
2024-09-30 $73,633,308 330,061
2024-09-30 $28,934,773 129,700
2024-06-30 $11,842,464 56,200
2024-06-30 $33,715,200 160,000
2024-06-30 $32,996,012 156,587
2024-03-31 $6,611,958 32,100
2024-03-31 $11,118,182 53,977
2024-03-31 $33,554,142 162,900
2023-12-31 $28,761,546 151,800
2023-12-31 $23,494 124
2023-12-31 $1,098,926 5,800
2023-09-30 $14,462,800 76,000
2023-09-30 $13,682,570 71,900
2023-09-30 $22,251,588 116,929
2023-06-30 $50,015,173 265,925
2023-06-30 $8,933,800 47,500
2023-06-30 $6,883,728 36,600
2023-03-31 $19,203,215 115,300
2023-03-31 $14,223,370 85,400
2023-03-31 $21,536,747 129,311
2022-12-31 $20,105,820 121,500
2022-12-31 $43,128,389 260,626
2022-12-31 $17,425,044 105,300
2022-09-30 $36,736,834 246,077
2022-09-30 $18,482,102 123,800
2022-09-30 $25,200,152 168,800
2022-06-30 $21,050,967 135,594
2022-06-30 $21,905,775 141,100
2022-06-30 $34,574,175 222,700
2022-03-31 $10,378,578 60,900
2022-03-31 $35,585,911 208,813