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Which funds own TS

Tenaris S A in the Q2 2026 filings. At least 4 of the 91 current managers on file reported a position, worth $286m 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: 4; at least, of 91 current
Combined value: $286m; as reported
Opened: 2; new this quarter
Added to: 1; already held
Trimmed or sold out: 1; 0 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
Renaissance Technologies LLC Quantitative · $72.6bn book	$170m	0.2%	3,056,044	-$17m-143,700	Trimmed
Holocene Advisors LP Long/short equity · $44.4bn book	$57m	0.1%	1,030,105	opened1,030,105	New
Bridgewater Associates LP Macro · $24.4bn book	$32m	0.1%	568,223	+$30m+539,593	Added
Freestone Grove Partners LP Multi-strategy · $15.6bn book	$28m	0.2%	504,463	opened504,463	New

Ownership through time

At least 7 of the 95 managers whose filings are on file listed TS in Q2 2026, against 4 in Q2 2013. 5 managers more than in Q1 2026: 2 started positions; 3 listed it again.

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

Holocene Advisors LP$57m
Freestone Grove Partners LP$28m

Largest increases, by shares

Holocene Advisors LPnew: 1,030,105 shares+$57m
Freestone Grove Partners LPnew: 504,463 shares+$28m
Wellington Management Group LLP2,405,034 to 2,458,033 shares+$2.9m

Largest decreases, by shares

Renaissance Technologies LLC3,199,744 to 3,056,044 shares-$8.0m

Left it

No manager on file is shown leaving it.

Manager	First listed	Largest	Q2 2026
Renaissance Technologies LLC	Q4 2018	$186m	$170m
Wellington Management Group LLP	Q3 2018	$140m	$136m
Holocene Advisors LP	Q1 2019	$57m	$57m
Marshall Wace LLP	Q3 2014	$91m	$39m
Bridgewater Associates LP	Q2 2026	$32m	$32m
Freestone Grove Partners LP	Q4 2024	$28m	$28m
ExodusPoint Capital Management LP	Q4 2019	$12m	$5.1m
Egerton Capital UK LLP	Q3 2014	$374m	last listed Q3 2019
T. Rowe Price Associates Inc	Q2 2013	$216m	last listed Q2 2020
Artisan Partners LP	Q2 2013	$169m	last listed Q1 2022
Arrowstreet Capital LP	Q3 2017	$160m	last listed Q4 2023
Millennium Management LLC	Q4 2014	$154m	last listed Q4 2024
Citadel Advisors LLC	Q2 2017	$147m	last listed Q1 2025
Viking Global Investors LP	Q1 2018	$141m	last listed Q3 2018
Invesco Ltd	Q1 2017	$116m	last listed Q2 2017
Balyasny Asset Management LLC	Q2 2015	$90m	last listed Q2 2025
Point72 Asset Management LP	Q4 2014	$66m	last listed Q3 2024

What TS 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 TS →

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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