Calamos Advisors LLC

SEC CIK: 0001316507
Latest filing: Jul 31, 2026

SEC filings (opens in a new tab)

MRSH holding history

Marsh & McLennan Companies, Inc. in every 13F filed by Calamos Advisors LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

MRSH overview All 13F holders of MRSH Full Q2 2026 holdings

Shares (Q2 2026): 129,269
Value: $21.5M
% of portfolio: 0.1%
Quarters held: 22; Since Q1 2021

Holdings of MRSH by Calamos Advisors LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	129,269	$21.5M	0.1%	−4,853−3.6%	Reduced	Holders
Q1 2026	134,122	$23.3M	0.1%	+2,450+1.9%	Added	Holders
Q4 2025	131,672	$24.4M	0.1%	−136,084−50.8%	Reduced	Holders
Q3 2025	267,756	$54.0M	0.2%	−8,666−3.1%	Reduced	Holders
Q2 2025	276,422	$60.4M	0.3%	+238+0.1%	Added	Holders
Q1 2025	276,184	$67.4M	0.3%	+11,992+4.5%	Added	Holders
Q4 2024	264,192	$56.1M	0.3%	+1,034+0.4%	Added	Holders
Q3 2024	263,158	$58.7M	0.3%	−1,826−0.7%	Reduced	Holders
Q2 2024	264,984	$55.8M	0.3%	−18,261−6.4%	Reduced	Holders
Q1 2024	283,245	$58.3M	0.3%	−3,245−1.1%	Reduced	Holders
Q4 2023	286,490	$54.3M	0.3%	−745−0.3%	Reduced	Holders
Q3 2023	287,235	$54.7M	0.3%	−23,354−7.5%	Reduced	Holders
Q2 2023	310,589	$58.4M	0.3%	+1160.0%	Added	Holders
Q1 2023	310,473	$51.7M	0.3%	−31,074−9.1%	Reduced	Holders
Q4 2022	341,547	$56.5M	0.3%	−47,558−12.2%	Reduced	Holders
Q3 2022	389,105	$58.1M	0.3%	+10,823+2.9%	Added	Holders
Q2 2022	378,282	$58.7M	0.3%	+5,360+1.4%	Added	Holders
Q1 2022	372,922	$63.6M	0.2%	+24,791+7.1%	Added	Holders
Q4 2021	348,131	$60.5M	0.2%	−5,685−1.6%	Reduced	Holders
Q3 2021	353,816	$53.6M	0.3%	+13,715+4.0%	Added	Holders
Q2 2021	340,101	$47.8M	0.2%	+8,314+2.5%	Added	Holders
Q1 2021	331,787	$40.4M	0.2%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.