How many institutional investors hold TS?

4 tracked institutional investors disclosed a position in TS (TENARIS S A) in their most recent 13F filing.

Who is the largest institutional holder of TS?

Ken Griffin, Citadel Advisors, holds the largest disclosed position in TS, valued at $39M.

Where does this TS ownership data come from?

SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.

TS — TENARIS S A

Name: TENARIS S A (TS) — Institutional Ownership
Creator: InvestorLens
License: https://www.sec.gov/about/website-policies

Public company

For educational research only.InvestorLens analyzes public regulatory filings (SEC EDGAR, STOCK Act PTRs) that may be delayed by 45 days or more. Information shown is historical and is not financial, legal, or tax advice, nor a recommendation or solicitation to buy or sell any security. Always do your own research.

InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.

Sourced from SEC EDGAR public filings

About TENARIS S A (TS)

TENARIS S A (TS) appears in the most recent 13F filings of 4 tracked institutional investors. The largest disclosed position is held by Ken Griffin (Citadel Advisors), valued at $39M. Across recent filings, tracked investors recorded 1 new positions, 0 increased, 0 reduced, and 0 exited. All data sourced from SEC 13F filings.

Smart Money Consensus™

Based on recent institutional activity in TS

100

/100

Strong Institutional Accumulation

Added / Increased1

Reduced0

Exited0

BearishBullish

Crowded Trade Score™

How many top investors track TS

/100

Emerging Interest

4investors

A small number of top investors own this.

UndiscoveredCrowded

151015+

TS Ownership Composition

How TENARIS S A is held across tracked investor types, based on reported 13F positions.

Dominant Type

Other

74% of tracked value

Institutions

tracked investors

Total Reported

$39.9M

combined 13F value

Other74.4%
Hedge Funds25.6%

Other(3)

74.4%

Hedge Funds(1)

25.6%

Tracked investors reporting TS

Investor	Firm	Shares	Market value	% of portfolio	As of
Ken Griffin	Citadel Advisors	362.7K	$21.1M	0.00%	Mar 31, 2026
Steve Cohen	Point72 Asset Management	266.1K	$10.2M	0.01%	Dec 31, 2025
Izzy Englander	Millennium Management	118.7K	$6.9M	0.00%	Mar 31, 2026
Ray Dalio	Bridgewater Associates	28.6K	$1.7M	0.01%	Mar 31, 2026

Ken GriffinMar 31, 2026
Citadel Advisors
Shares
362.7K
Value
$21.1M
% Portfolio
0.00%
Steve CohenDec 31, 2025
Point72 Asset Management
Shares
266.1K
Value
$10.2M
% Portfolio
0.01%
Izzy EnglanderMar 31, 2026
Millennium Management
Shares
118.7K
Value
$6.9M
% Portfolio
0.00%
Ray DalioMar 31, 2026
Bridgewater Associates
Shares
28.6K
Value
$1.7M
% Portfolio
0.01%

Recent activity

Investor	Action	Δ %	Current value	Filing date
Ray Dalio	New	—	$1.7M	May 15, 2026

Ray Dalio
New
$1.7MMay 15, 2026

Frequently asked questions

How many institutional investors hold TS?: 4 tracked institutional investors disclosed a position in TS (TENARIS S A) in their most recent 13F filing.
Who is the largest institutional holder of TS?: Ken Griffin, Citadel Advisors, holds the largest disclosed position in TS, valued at $39M.
Did institutional ownership of TS increase or decrease?: Across recent 13F filings, tracked investors recorded 1 new positions, 0 increased, 0 reduced, and 0 fully exited TS.
Where does this TS ownership data come from?: SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.