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Tenaris
TS

229 hedge funds and large institutions have $1.27B invested in Tenaris in 2025 Q4 according to their latest regulatory filings, with 48 funds opening new positions, 76 increasing their positions, 69 reducing their positions, and 37 closing their positions.

New
Increased
Maintained
Reduced
Closed

30% more first-time investments, than exits

New positions opened: 48 | Existing positions closed: 37

10% more repeat investments, than reductions

Existing positions increased: 76 | Existing positions reduced: 69

4% more funds holding

Funds holding: 221 → 229 (+8)

0.47% less ownership

Funds ownership: 6.14% → 5.67% (-0.47%)

1% less capital invested

Capital invested by funds: $1.28B → $1.27B (-$9.7M)

42% less call options, than puts

Call options by funds: $3.39M | Put options by funds: $5.83M

50% less funds holding in top 10

Funds holding in top 10: 4 → 2 (-2)

Holders
229
Holders Change
+8
Holders Change %
+3.62%
% of All Funds
2.78%
Holding in Top 10
2
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-50%
% of All Funds
0.02%
New
48
Increased
76
Reduced
69
Closed
37
Calls
$3.39M
Puts
$5.83M
Net Calls
-$2.44M
Net Calls Change
-$2.69M

Top Buyers

1
Citadel Advisors
Citadel Advisors
Florida
+$35.5M
2
Wellington Management Group
Wellington Management Group
Massachusetts
+$21.1M
3
Invesco
Invesco
Georgia
+$17.6M
4
VanEck Associates
VanEck Associates
New York
+$15.8M
5
Point72 Asset Management
Point72 Asset Management
Connecticut
+$10.3M

Top Sellers

1
ECA
Encompass Capital Advisors
New York
-$51.2M
2
Optiver Holding
Optiver Holding
Netherlands
-$32.4M
3
AA
ABC Arbitrage
France
-$27.7M
4
Millennium Management
Millennium Management
New York
-$16.1M
5
Renaissance Technologies
Renaissance Technologies
New York
-$14.9M
Name Holding Trade Value Shares
Change 		Change in
Stake
BGAI
176
Bruce G. Allen Investments
Colorado
$12.2K – – –
TWD
177
True Wealth Design
Ohio
$10.1K +$1.89K +49 +23%
UB
178
UMB Bank
Missouri
$10.1K – – –
SAG
179
SageView Advisory Group
California
$9.84K +$9.87K +256 New
SIC
180
SJS Investment Consulting
Ohio
$9.38K +$9.41K +244 New
AF
181
Allworth Financial
California
$9.28K +$5.55K +144 +148%
MCM
182
MAI Capital Management
Ohio
$8.54K +$5.2K +135 +155%
BCM
183
Boreal Capital Management
Florida
$7.69K – – –
SL
184
Salomon & Ludwin
Virginia
$6.49K – – –
EP
185
Essential Partners
California
$6.04K +$5.47K +142 +947%
Nisa Investment Advisors
186
Nisa Investment Advisors
Missouri
$5.77K – – –
Q1WB
187
Quest 10 Wealth Builders
Virginia
$5.77K – – –
FDCDDQ
188
Federation des caisses Desjardins du Quebec
Quebec, Canada
$5.38K – – –
LFG
189
Larson Financial Group
Missouri
$5.23K +$540 +14 +11%
Bessemer Group
190
Bessemer Group
New Jersey
$5K -$2K -52 -27%
BBHC
191
Brown Brothers Harriman & Co
New York
$4.81K +$4.82K +125 New
CPG
192
Cornerstone Planning Group
New Jersey
$4.75K +$3.89K +101 +1,683%
ACA
193
Atlas Capital Advisors
Wyoming
$4.15K +$4.16K +108 New
VWA
194
Valued Wealth Advisors
Utah
$3.81K – – –
PWA
195
Physician Wealth Advisors
Utah
$3.77K +$463 +12 +14%
MCM
196
Manchester Capital Management
Vermont
$3.46K +$3.47K +90 New
JWA
197
JFS Wealth Advisors
Pennsylvania
$3.42K – – –
CA
198
CoreCap Advisors
Michigan
$3.08K +$2.89K +75 +1,500%
BIA
199
Bell Investment Advisors
California
$2.85K – – –
CIA
200
Cape Investment Advisory
Georgia
$2.81K +$2.81K +73 New
6 7
8
9 10

TS Hedge Fund Activity: Q4 2025 in Review

229 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in Tenaris (TS) for Q4 2025, worth a combined $1.27B — down 0.76% from $1.28B a quarter earlier.

Buyers outnumbered sellers: 48 funds opened new TS positions and 37 closed out — a net gain of 11 holders — while 76 added to existing stakes and 69 trimmed.

The largest buyer was Citadel Advisors, adding an estimated $35.5M. The largest seller was Encompass Capital Advisors, exiting entirely with an estimated $51.2M sold.

  • 229 institutional investors held Tenaris (TS) as of Q4 2025, up from 221 in Q3 2025.
  • Funds reported $1.27B of Tenaris stock for Q4 2025, down 0.76% quarter-over-quarter.
  • 48 funds opened new Tenaris positions in Q4 2025 and 37 closed out, a net change of +11 holders.
  • The largest Tenaris buyer in Q4 2025 was Citadel Advisors, an estimated $35.5M added.
  • The largest Tenaris seller in Q4 2025 was Encompass Capital Advisors, an estimated $51.2M sold.

Based on aggregated 13F filings for Q4 2025.