Free · no sign-up · Q2 2026

Which funds own WMS

Advanced Drainage Systems in the Q2 2026 filings. At least 3 of the 91 current managers on file reported a position, worth $365m between them. It is among the largest positions of fewer than a fifth of the current managers on file. The quarter went the other way: 6 managers trimmed or sold out against 0 buying.

Managers holding: 3; at least, of 91 current
Combined value: $365m; as reported
Opened: 0; new this quarter
Added to: 0; already held
Trimmed or sold out: 6; 3 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
Baillie Gifford & Co Long-only · $110bn book	$288m	0.3%	1,835,297	+$7.3m-212,052	Trimmed
Schonfeld Strategic Advisors LLC Multi-strategy · $27.9bn book	$72m	0.3%	460,060	+$5.1m-29,247	Trimmed
PDT Partners LLC Quantitative · $1.9bn book	$4.5m	0.2%	28,662	-$1.8m-17,059	Trimmed

Sold out of this quarter

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

ExodusPoint Capital Management LP · Multi-strategy$7.6m held before
Winton Group Ltd · Quantitative$5.5m held before
First Eagle Investment Management LLC · Value$700k held before

Ownership through time

At least 8 of the 95 managers whose filings are on file listed WMS in Q2 2026, against 1 in Q3 2014. 3 managers fewer than in Q1 2026: 2 listed it again; 1 sold out, by its own filing; 4 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

No manager on file started a position.

Largest increases, by shares

Capital World Investors262,854 to 270,582 shares+$1.2m

Largest decreases, by shares

Janus Henderson Group Ltd592,581 to 361,701 shares-$36m
Wellington Management Group LLP1,063,231 to 840,488 shares-$35m
Baillie Gifford & Co2,047,349 to 1,835,297 shares-$33m
Schonfeld Strategic Advisors LLC489,307 to 460,060 shares-$4.6m
PDT Partners LLC45,721 to 28,662 shares-$2.7m

Left it

First Eagle Investment Management LLCwas $730k

Manager	First listed	Largest	Q2 2026
Baillie Gifford & Co	Q4 2022	$548m	$288m
Wellington Management Group LLP	Q3 2015	$261m	$132m
Schonfeld Strategic Advisors LLC	Q1 2019	$89m	$72m
Janus Henderson Group Ltd	Q4 2021	$99m	$57m
Balyasny Asset Management LLC	Q4 2014	$66m	$54m
Marshall Wace LLP	Q4 2014	$49m	$49m
Capital World Investors	Q1 2026	$42m	$42m
PDT Partners LLC	Q1 2015	$6.6m	$4.5m
Invesco Ltd	Q1 2021	$368m	last listed Q3 2024
Artisan Partners LP	Q3 2020	$288m	last listed Q2 2024
Millennium Management LLC	Q3 2022	$98m	last listed Q3 2022
MFS Investment Management	Q3 2014	$65m	last listed Q1 2022
Renaissance Technologies LLC	Q3 2020	$53m	last listed Q4 2022
Point72 Asset Management LP	Q4 2014	$50m	last listed Q2 2024
Voloridge Investment Management LLC	Q2 2021	$42m	last listed Q1 2025
Neuberger Berman Group LLC	Q3 2015	$34m	last listed Q2 2016
Man Group PLC	Q2 2020	$34m	last listed Q2 2024
Two Sigma Investments LP	Q3 2019	$19m	last listed Q1 2020

What WMS 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 WMS →

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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