Free · no sign-up · Q2 2026

Which funds own BIO

Bio Rad Labs Inc in the Q2 2026 filings. At least 3 of the 91 current managers on file reported a position, worth $810m 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: 3; at least, of 91 current
Combined value: $810m; as reported
Opened: 1; new this quarter
Added to: 1; already held
Trimmed or sold out: 2; 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
First Eagle Investment Management LLC Value · $60.8bn book	$765m	1.3%	2,606,219	+$40m+3,447	Added
Freestone Grove Partners LP Multi-strategy · $15.6bn book	$41m	0.3%	140,113	unchanged-7,492	Trimmed
Caxton Associates LLP Macro · $5.3bn book	$4.1m	0.1%	13,875	opened13,875	New

Sold out of this quarter

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

Southeastern Asset Management Inc · Value$45m held before

Ownership through time

At least 7 of the 95 managers whose filings are on file listed BIO in Q2 2026, against 5 in Q2 2013. 1 manager fewer than in Q1 2026: 1 started a position; 1 listed it again; 1 sold out, by its own filing; 2 no longer listed it among the positions read, which can mean a holding below the listed range, a filing that reported no holdings, 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

Caxton Associates LLP$4.1m

Largest increases, by shares

Capital Research Global Investors385,579 to 443,483 shares+$17m
Caxton Associates LLPnew: 13,875 shares+$4.1m
Capital World Investors450,000 to 462,457 shares+$3.7m
First Eagle Investment Management LLC2,602,772 to 2,606,219 shares+$1.0m

Largest decreases, by shares

Freestone Grove Partners LP147,605 to 140,113 shares-$2.2m

Left it

Southeastern Asset Management Incwas $45m

Manager	First listed	Largest	Q2 2026
First Eagle Investment Management LLC	Q2 2023	$779m	$765m
Capital World Investors	Q1 2026	$136m	$136m
Capital Research Global Investors	Q3 2025	$150m	$130m
Freestone Grove Partners LP	Q4 2024	$41m	$41m
GAMCO Investors Inc	Q2 2013	$21m	$7.9m
Caxton Associates LLP	Q2 2017	$4.1m	$4.1m
Brevan Howard Capital Management LP	Q3 2024	$5.3m	$4.0m
Fidelity (FMR LLC)	Q1 2020	$1.5bn	last listed Q1 2022
AllianceBernstein LP	Q4 2016	$443m	last listed Q4 2023
Marshall Wace LLP	Q2 2017	$328m	last listed Q3 2023
Invesco Ltd	Q2 2020	$327m	last listed Q1 2022
Acadian Asset Management LLC	Q3 2014	$315m	last listed Q1 2026
Millennium Management LLC	Q1 2014	$219m	last listed Q1 2025
AQR Capital Management LLC	Q3 2018	$172m	last listed Q2 2022
Schonfeld Strategic Advisors LLC	Q1 2016	$152m	last listed Q2 2023
Southeastern Asset Management Inc	Q2 2023	$123m	last listed Q1 2026
MFS Investment Management	Q3 2023	$121m	last listed Q1 2026

What BIO 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 BIO →

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.

Comps ExplorerValue it against the peers it trades beside Every managerRead any of these books in full Deal tapeWhat buyers paid for whole companies, not slices Hedge fund interviewsHow the room runs, and the stock pitch it wants

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The holdings, every quarter, and the week between

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