219 hedge funds and large institutions have $1.42B invested in Tenaris in 2025 Q2 according to their latest regulatory filings, with 36 funds opening new positions, 87 increasing their positions, 68 reducing their positions, and 38 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
219
Holders Change
-5
Holders Change %
-2.23%
% of All Funds
2.94%
Holding in Top 10
2
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-50%
% of All Funds
0.03%
New
36
Increased
87
Reduced
68
Closed
38
Calls
$7.47M
Puts
$11.3M
Net Calls
-$3.88M
Net Calls Change
-$4.27M
Name Holding Trade Value Shares
Change
Shares
Change %
KP
26
Kiltearn Partners
United Kingdom
$12M +$5.52M +147,600 +86%
Optiver Holding
27
Optiver Holding
Netherlands
$11.8M +$8.09M +216,428 +218%
Royal Bank of Canada
28
Royal Bank of Canada
Ontario, Canada
$11.2M -$5.7M -152,454 -34%
Jane Street
29
Jane Street
New York
$11M +$9.18M +245,552 +494%
Grantham, Mayo, Van Otterloo & Co (GMO)
30
Grantham, Mayo, Van Otterloo & Co (GMO)
Massachusetts
$9.49M +$1.51M +40,293 +19%
JF
31
Jump Financial
Illinois
$9.38M +$9.38M +250,800 New
TI
32
Trexquant Investment
Connecticut
$9.12M +$9.12M +243,793 New
CSS
33
Cubist Systematic Strategies
Connecticut
$9.1M +$9.1M +243,360 New
QC
34
Quadrature Capital
United Kingdom
$8.82M -$10.4M -540,610 -54%
Northern Trust
35
Northern Trust
Illinois
$8.63M -$8.67M -231,894 -50%
D.E. Shaw & Co
36
D.E. Shaw & Co
New York
$8.3M +$2.19M +58,605 +36%
Legal & General Group
37
Legal & General Group
United Kingdom
$7.74M -$361K -9,642 -4%
LIP
38
Lighthouse Investment Partners
Florida
$7.11M +$3.18M +85,000 +81%
ACG
39
Aventail Capital Group
New York
$6.94M
Lazard Asset Management
40
Lazard Asset Management
New York
$5.55M -$627K -16,762 -10%
State Street
41
State Street
Massachusetts
$5.47M +$5.47M +146,229 New
BFM
42
Boothbay Fund Management
New York
$5.19M +$497K +13,279 +11%
EI
43
Ethic Inc
New York
$4.56M +$384K +10,397 +9%
SAM
44
Silvercrest Asset Management
New York
$4.1M +$444K +11,860 +12%
UBS AM
45
UBS AM
Illinois
$3.98M -$1.24M -33,094 -24%
Verition Fund Management
46
Verition Fund Management
Connecticut
$3.78M -$2.37M -63,394 -39%
SC
47
SummitTX Capital
Texas
$3.43M -$590K -15,782 -15%
ECM
48
ExodusPoint Capital Management
New York
$3.31M -$2.38M -63,699 -42%
First Trust Advisors
49
First Trust Advisors
Illinois
$3.25M +$2.73M +73,107 +535%
OSAM
50
O'Shaughnessy Asset Management
Connecticut
$2.88M -$152K -4,072 -5%