Free · no sign-up · Q2 2026

Which funds own ACGL

Arch Cap Group LTD in the Q2 2026 filings. At least 5 of the 91 current managers on file reported a position, worth $2.6bn between them. It is among the largest positions of fewer than a fifth of the current managers on file. Buying and selling roughly cancelled this quarter, which is what a name looks like when the argument is still live.

Managers holding: 5; at least, of 91 current
Combined value: $2.6bn; as reported
Opened: 2; new this quarter
Added to: 1; already held
Trimmed or sold out: 3; 1 sold out entirely

Only each manager’s largest 200 positions are listed here, so a smaller holder may be missing.

Managers reporting a position

Largest first. Weight is the share of that manager’s whole reported book, which is the number worth quoting: $400m is a rounding error in one book and a defining bet in another.

Manager	Value	Weight	Shares	Change on the quarter	Action
Artisan Partners LP Long-only · $63.1bn book	$2.1bn	3.3%	21,595,895	-$80m-1,070,116	Trimmed
Arrowstreet Capital LP Quantitative · $225bn book	$436m	0.2%	4,493,790	+$253m+2,583,727	Added
Bridgewater Associates LP Macro · $24.4bn book	$22m	0.1%	223,860	-$1.9m-22,343	Trimmed
Quantbot Technologies LP Quantitative · $2.5bn book	$11m	0.4%	108,986	opened108,986	New
Winton Group Ltd Quantitative · $3.1bn book	$4.6m	0.1%	47,650	opened47,650	New

Sold out of this quarter

Valued at what the position was worth in the previous filing, because by this one it is gone.

Egerton Capital UK LLP · Long/short equity$107m held before

Ownership through time

At least 8 of the 95 managers whose filings are on file listed ACGL in Q2 2026, against 3 in Q2 2013. 3 managers fewer than in Q1 2026: 1 started a position; 1 sold out, by its own filing; 3 no longer listed it among the positions read, which can mean a holding below the listed range or a filing not yet made.

Each manager’s largest 500 positions a quarter are read, so a small holding in a very large book can be missing, and a manager is counted as leaving only where its own filing shows it.

Managers on file listing it

Their combined reported value

Between the quarter ends of Q1 2026 and Q2 2026. Each change in shares is valued at the Q2 2026 price, so the price’s own move is left out; a 13F shows the two quarter ends, not when in between anything was bought or sold.

Started in Q2 2026

Quantbot Technologies LP$11m
Winton Group Ltd$4.6m

Largest increases, by shares

Arrowstreet Capital LP1,910,063 to 4,493,790 shares+$251m
Invesco Ltd4,059,380 to 4,947,084 shares+$86m
Quantbot Technologies LPnew: 108,986 shares+$11m
Winton Group Ltdnew: 47,650 shares+$4.6m

Largest decreases, by shares

Artisan Partners LP22,666,011 to 21,595,895 shares-$104m
Two Sigma Investments LP1,273,691 to 787,208 shares-$47m
Bridgewater Associates LP246,203 to 223,860 shares-$2.2m
Man Group PLC432,239 to 416,273 shares-$1.6m

Left it

Egerton Capital UK LLPwas $107m

Manager	First listed	Largest	Q2 2026
Artisan Partners LP	Q2 2013	$2.7bn	$2.1bn
Invesco Ltd	Q3 2015	$522m	$480m
Arrowstreet Capital LP	Q1 2017	$436m	$436m
Two Sigma Investments LP	Q1 2018	$172m	$76m
Man Group PLC	Q2 2018	$76m	$40m
Bridgewater Associates LP	Q1 2020	$37m	$22m
Quantbot Technologies LP	Q3 2013	$11m	$11m
Winton Group Ltd	Q2 2017	$15m	$4.6m
Capital World Investors	Q2 2017	$1.2bn	last listed Q3 2024
Wellington Management Group LLP	Q2 2022	$714m	last listed Q1 2025
Capital Research Global Investors	Q3 2017	$476m	last listed Q3 2024
Egerton Capital UK LLP	Q3 2023	$416m	last listed Q1 2026
Fidelity (FMR LLC)	Q3 2022	$404m	last listed Q4 2022
AQR Capital Management LLC	Q1 2015	$261m	last listed Q1 2026
Citadel Advisors LLC	Q2 2016	$195m	last listed Q3 2020
Renaissance Technologies LLC	Q3 2014	$189m	last listed Q1 2020
Millennium Management LLC	Q2 2014	$168m	last listed Q2 2025
Marshall Wace LLP	Q4 2014	$151m	last listed Q3 2025

What ACGL is worth

Knowing who owns it is half the question. The other half is what it is worth against the companies it trades beside, which is the one an interviewer will follow up with.

Build the comp set around ACGL →

How much of the picture this is

A Form 13F reports US-listed long equity and nothing else: no shorts, no bonds, no cash and no non-US listings. It arrives forty-five days after the quarter ends, so a manager who sold in July still shows the position in a filing published in August. This page reads the managers on file here rather than every filer in the market, and each manager’s largest positions rather than the whole table, so a small position in a very large book may not appear. Say “their last filing showed” rather than “they own”, and the distinction will do you credit.

What to do with a name the funds are buying

Knowing who owns something is the start of a pitch, not the pitch. The next questions are what it is worth and why they were buying.

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The holdings, every quarter, and the week between

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