Tenaris
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.
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)
Top Buyers
| 1 |
Citadel Advisors
Miami,
Florida
|
+$35.5M |
| 2 |
Wellington Management Group
Boston,
Massachusetts
|
+$21.1M |
| 3 |
Invesco
Atlanta,
Georgia
|
+$17.6M |
| 4 |
VanEck Associates
New York
|
+$15.8M |
| 5 |
Point72 Asset Management
Stamford,
Connecticut
|
+$10.3M |
Top Sellers
| 1 |
ECA
Encompass Capital Advisors
New York
|
-$51.2M |
| 2 |
Optiver Holding
Amsterdam,
Netherlands
|
-$32.4M |
| 3 |
AA
ABC Arbitrage
Paris,
France
|
-$27.7M |
| 4 |
Millennium Management
New York
|
-$16.1M |
| 5 |
Renaissance Technologies
New York
|
-$14.9M |
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.