Free · no sign-up · Q2 2026

Which funds own WAB

Wabtec in the Q2 2026 filings. At least 7 of the 91 current managers on file reported a position, worth $8.5bn 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: 7 managers trimmed or sold out against 4 buying.

Managers holding: 7; at least, of 91 current
Combined value: $8.5bn; as reported
Opened: 1; new this quarter
Added to: 3; already held
Trimmed or sold out: 7; 4 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
Fidelity (FMR LLC) Long-only · $2304bn book	$5.8bn	0.3%	21,383,543	+$836m+1,661,114	Added
T. Rowe Price Associates Inc Long-only · $999bn book	$2.0bn	0.2%	7,271,071	-$40m-731,761	Trimmed
MFS Investment Management Long-only · $315bn book	$391m	0.1%	1,428,720	-$18m-188,006	Trimmed
Farallon Capital Management LLC Long/short equity · $21.7bn book	$241m	1.1%	894,503	-$161m-714,900	Trimmed
Davidson Kempner Capital Management LP Long/short equity · $8.4bn book	$54m	0.6%	200,000	opened200,000	New
Verition Fund Management LLC Multi-strategy · $19.7bn book	$39m	0.2%	144,174	+$7.7m+19,354	Added
Quantbot Technologies LP Quantitative · $2.5bn book	$4.3m	0.2%	15,911	+$1.6m+4,973	Added

Sold out of this quarter

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

Renaissance Technologies LLC · Quantitative$29m held before
Arrowstreet Capital LP · Quantitative$17m held before
Baillie Gifford & Co · Long-only$14m held before
Hudson Bay Capital Management LP · Multi-strategy$6.4m held before

Ownership through time

At least 20 of the 95 managers whose filings are on file listed WAB in Q2 2026, against 6 in Q2 2013. The same number as in Q1 2026: 2 started positions; 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 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

Largest increases, by shares

Fidelity (FMR LLC)19,722,429 to 21,383,543 shares+$448m
Invesco Ltd2,131,855 to 2,794,714 shares+$179m
Davidson Kempner Capital Management LPnew: 200,000 shares+$54m
Marshall Wace LLP155,000 to 230,000 shares+$20m
AllianceBernstein LP473,908 to 528,718 shares+$14m

Largest decreases, by shares

Wellington Management Group LLP2,509,912 to 1,670,476 shares-$226m
T. Rowe Price Associates Inc8,002,832 to 7,271,071 shares-$197m
Farallon Capital Management LLC1,609,403 to 894,503 shares-$193m
MFS Investment Management1,616,726 to 1,428,720 shares-$51m
Voloridge Investment Management LLC205,710 to 42,836 shares-$44m

Left it

Baillie Gifford & Cowas $13m

Manager	First listed	Largest	Q2 2026
Fidelity (FMR LLC)	Q3 2015	$5.8bn	$5.8bn
T. Rowe Price Associates Inc	Q2 2013	$2.0bn	$2.0bn
Invesco Ltd	Q1 2015	$924m	$753m
Wellington Management Group LLP	Q4 2013	$1.3bn	$450m
MFS Investment Management	Q1 2021	$941m	$390m
AQR Capital Management LLC	Q4 2020	$370m	$370m
Farallon Capital Management LLC	Q1 2017	$575m	$241m
AllianceBernstein LP	Q3 2014	$200m	$132m
Janus Henderson Group Ltd	Q2 2013	$875m	$83m
Neuberger Berman Group LLC	Q2 2013	$435m	$67m
Marshall Wace LLP	Q1 2014	$62m	$62m
Davidson Kempner Capital Management LP	Q2 2026	$54m	$54m
Man Group PLC	Q1 2023	$112m	$52m
Acadian Asset Management LLC	Q2 2024	$53m	$40m
Verition Fund Management LLC	Q1 2014	$39m	$39m
Baillie Gifford & Co	Q1 2016	$514m	last listed Q1 2026
Artisan Partners LP	Q2 2013	$210m	last listed Q4 2024
Soroban Capital Partners LP	Q2 2021	$198m	last listed Q3 2022
Two Sigma Advisers LP	Q3 2016	$157m	last listed Q4 2025
D. E. Shaw & Co.	Q4 2020	$129m	last listed Q4 2020
Two Sigma Investments LP	Q1 2019	$125m	last listed Q1 2026
Millennium Management LLC	Q2 2014	$119m	last listed Q2 2024
Citadel Advisors LLC	Q2 2018	$111m	last listed Q2 2018
Balyasny Asset Management LLC	Q3 2015	$111m	last listed Q4 2025
Arrowstreet Capital LP	Q1 2023	$108m	last listed Q2 2025

What WAB 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 WAB →

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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