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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
GCM
251
Graham Capital Management
Connecticut
– -$286K -7,999 Closed
Franklin Resources
252
Franklin Resources
California
– -$241K -6,727 Closed
PAS
253
Park Avenue Securities
New York
– -$236K -6,587 Closed
PSP
254
Principal Street Partners
Tennessee
– -$235K -6,578 Closed
FHA
255
Flagship Harbor Advisors
Massachusetts
– -$214K -5,984 Closed
KOCAA
256
Knights of Columbus Asset Advisors
Connecticut
– -$173K -4,850 Closed
ASN
257
Advisory Services Network
Georgia
– -$47.2K -1,321 Closed
PH
258
Pinnacle Holdings
Oklahoma
– -$27.7K -774 Closed
AAS
259
Ameritas Advisory Services
Nebraska
– -$26.8K -750 Closed
PS
260
Principal Securities
Iowa
– -$24.2K -677 Closed
CJ
261
Caitlin John
Michigan
– -$10.7K -300 Closed
WANY
262
Wealthspire Advisors (New York)
New York
– -$10.1K -283 Closed
HWP
263
Highline Wealth Partners
California
– -$1.43K -40 Closed
RWS
264
Retirement Wealth Solutions
Wisconsin
– -$895 -25 Closed
MA
265
Montag & Associates
Georgia
– -$537 -15 Closed
PAM
266
Palisade Asset Management
Minnesota
– -$179 -5 Closed
7 8 9 10
11

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.