Tenaris
226 hedge funds and large institutions have $2.01B invested in Tenaris in 2025 Q1 according to their latest regulatory filings, with 34 funds opening new positions, 72 increasing their positions, 83 reducing their positions, and 35 closing their positions.
25% more funds holding in top 10
Funds holding in top 10: 4 → 5 (+1)
6% more capital invested
Capital invested by funds: $1.9B → $2.01B (+$112M)
4% more call options, than puts
Call options by funds: $10.4M | Put options by funds: $10M
0.08% more ownership
Funds ownership: 4.35% → 4.43% (+0.08%)
3% less first-time investments, than exits
New positions opened: 34 | Existing positions closed: 35
3% less funds holding
Funds holding: 233 → 226 (-7)
13% less repeat investments, than reductions
Existing positions increased: 72 | Existing positions reduced: 83
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
ACM
Alua Capital Management
New York
|
+$91.7M |
| 2 |
Citadel Advisors
Miami,
Florida
|
+$64.8M |
| 3 |
ECA
Encompass Capital Advisors
New York
|
+$38.3M |
| 4 |
Holocene Advisors
New York
|
+$34.7M |
| 5 |
UBS Group
Zurich,
Switzerland
|
+$30.2M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
-$62.9M |
| 2 |
AA
ABC Arbitrage
Paris,
France
|
-$27M |
| 3 |
OAG
Orbis Allan Gray
Hamilton,
Bermuda
|
-$24.9M |
| 4 |
VanEck Associates
New York
|
-$18.9M |
| 5 |
Capital Fund Management (CFM)
Paris,
France
|
-$17M |
TS Hedge Fund Activity: Q1 2025 in Review
226 of the 7,459 institutional investors tracked by Wall St. Rank reported a position in Tenaris (TS) for Q1 2025, worth a combined $2.01B — up 5.9% from $1.9B a quarter earlier.
Sellers outnumbered buyers: 35 funds closed out of TS and 34 opened new positions — a net loss of 1 holder — while 83 trimmed existing stakes and 72 added.
The largest buyer was Alua Capital Management, opening a new position worth an estimated $91.7M. The largest seller was Millennium Management, cutting an estimated $62.9M.
- 226 institutional investors held Tenaris (TS) as of Q1 2025, down from 233 in Q4 2024.
- Funds reported $2.01B of Tenaris stock for Q1 2025, up 5.9% quarter-over-quarter.
- 34 funds opened new Tenaris positions in Q1 2025 and 35 closed out, a net change of -1 holder.
- The largest Tenaris buyer in Q1 2025 was Alua Capital Management, an estimated $91.7M added.
- The largest Tenaris seller in Q1 2025 was Millennium Management, an estimated $62.9M sold.
Based on aggregated 13F filings for Q1 2025.