224 hedge funds and large institutions have $1.71B invested in Tenaris in 2025 Q1 according to their latest regulatory filings, with 34 funds opening new positions, 72 increasing their positions, 81 reducing their positions, and 35 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
224
Holders Change
-7
Holders Change %
-3.03%
% of All Funds
3.04%
Holding in Top 10
4
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+33.33%
% of All Funds
0.05%
New
34
Increased
72
Reduced
81
Closed
35
Calls
$10.4M
Puts
$10M
Net Calls
+$395K
Net Calls Change
+$14.1M
Name Holding Trade Value Shares
Change
Shares
Change %
Citadel Advisors
1
Citadel Advisors
Florida
$147M +$66M +1,688,609 +81%
Renaissance Technologies
2
Renaissance Technologies
New York
$106M +$7.19M +183,900 +7%
SG
3
Sourcerock Group
Colorado
$95.8M +$13.9M +356,636 +17%
ACM
4
Alua Capital Management
New York
$93.4M +$93.4M +2,387,363 New
Wellington Management Group
5
Wellington Management Group
Massachusetts
$91M -$162K -4,139 -0.2%
Fidelity Investments
6
Fidelity Investments
Massachusetts
$90.9M -$16M -409,102 -15%
ECA
7
Encompass Capital Advisors
New York
$82M +$39M +997,540 +91%
Morgan Stanley
8
Morgan Stanley
New York
$71.6M +$16.9M +432,811 +31%
VanEck Associates
9
VanEck Associates
New York
$71.1M -$19.3M -493,136 -21%
Balyasny Asset Management
10
Balyasny Asset Management
Illinois
$67.1M +$873K +22,327 +1%
T. Rowe Price Associates
11
T. Rowe Price Associates
Maryland
$66.6M -$6.71M -171,673 -9%
Goldman Sachs
12
Goldman Sachs
New York
$54.3M -$12.6M -322,359 -19%
MIM
13
Merewether Investment Management
Texas
$50.6M +$29.6M +757,320 +141%
Holocene Advisors
14
Holocene Advisors
New York
$46.9M +$35.4M +904,707 +307%
Millennium Management
15
Millennium Management
New York
$46M -$64.1M -1,639,469 -58%
UBS Group
16
UBS Group
Switzerland
$42.5M +$30.8M +787,041 +263%
Massachusetts Financial Services
17
Massachusetts Financial Services
Massachusetts
$29.5M +$9.44M +241,290 +47%
BNP Paribas Financial Markets
18
BNP Paribas Financial Markets
France
$26.7M +$14.7M +376,921 +123%
BlackRock
19
BlackRock
New York
$25.7M -$422K -10,785 -2%
HL
20
Harding Loevner
New Jersey
$23.3M -$9.67M -247,344 -29%
Dimensional Fund Advisors
21
Dimensional Fund Advisors
Texas
$22.5M +$6.09M +155,734 +37%
Capstone Investment Advisors
22
Capstone Investment Advisors
New York
$21.5M +$10.5M +268,500 +95%
MVP
23
Medina Value Partners
California
$20.3M -$1.89M -48,220 -9%
QC
24
Quadrature Capital
United Kingdom
$19.5M +$669K +34,215 +4%
Northern Trust
25
Northern Trust
Illinois
$18.1M +$9.46M +241,853 +110%