263 hedge funds and large institutions have $2.29B invested in Tenaris in 2026 Q1 according to their latest regulatory filings, with 71 funds opening new positions, 85 increasing their positions, 66 reducing their positions, and 31 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
263
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
1
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$27.3M
Puts
$12.1M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
VA
51
Vident Advisory
Georgia
$2.5M
LIP
52
Lighthouse Investment Partners
Florida
$2.47M
CCIA
53
Campbell & Co Investment Adviser
Maryland
$2.39M
Mariner
54
Mariner
Kansas
$2.34M
Pathstone Holdings
55
Pathstone Holdings
New Jersey
$2.34M
HF
56
HRT Financial
New York
$2.31M
Mercer Global Advisors
57
Mercer Global Advisors
Colorado
$1.96M
New York State Common Retirement Fund
58
New York State Common Retirement Fund
New York
$1.94M
BIG
59
Brooklyn Investment Group
New York
$1.9M
CIAM
60
Caitong International Asset Management
Hong Kong
$1.87M
Cerity Partners
61
Cerity Partners
New York
$1.84M
Bank of Montreal
62
Bank of Montreal
Ontario, Canada
$1.76M
American Century Companies
63
American Century Companies
Missouri
$1.67M
BA
64
Bridgewater Associates
Connecticut
$1.67M
Envestnet Asset Management
65
Envestnet Asset Management
Illinois
$1.65M
MCM
66
Mork Capital Management
California
$1.65M
SEI Investments
67
SEI Investments
Pennsylvania
$1.56M
CL
68
CSS LLC
Illinois
$1.55M
VCM
69
Vanguard Capital Management
Pennsylvania
$1.55M
TWC
70
TD Waterhouse Canada
Ontario, Canada
$1.53M
LPL Financial
71
LPL Financial
California
$1.48M
VFM
72
Viking Fund Management
North Dakota
$1.45M
HWAM
73
Hennion & Walsh Asset Management
New Jersey
$1.4M
CFO
74
Callan Family Office
Pennsylvania
$1.39M
ECM
75
Evergreen Capital Management
Washington
$1.39M