Tenaris
264 hedge funds and large institutions have $2.29B invested in Tenaris in 2026 Q1 according to their latest regulatory filings, with 70 funds opening new positions, 87 increasing their positions, 66 reducing their positions, and 32 closing their positions.
125% more call options, than puts
Call options by funds: $27.3M | Put options by funds: $12.1M
119% more first-time investments, than exits
New positions opened: 70 | Existing positions closed: 32
81% more capital invested
Capital invested by funds: $1.27B → $2.29B (+$1.02B)
32% more repeat investments, than reductions
Existing positions increased: 87 | Existing positions reduced: 66
15% more funds holding
Funds holding: 229 → 264 (+35)
1.1% more ownership
Funds ownership: 5.66% → 6.77% (+1.1%)
50% less funds holding in top 10
Funds holding in top 10: 2 → 1 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$298M |
| 2 |
DCM
Driehaus Capital Management
Chicago,
Illinois
|
+$43.8M |
| 3 |
VanEck Associates
New York
|
+$43M |
| 4 |
Invesco
Atlanta,
Georgia
|
+$30.7M |
| 5 |
CAMG
CWA Asset Management Group
Naples,
Florida
|
+$25M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
-$31.5M |
| 2 |
WGI
Westwood Global Investments
Boston,
Massachusetts
|
-$29.5M |
| 3 |
D.E. Shaw & Co
New York
|
-$18.1M |
| 4 |
MVP
Medina Value Partners
Los Angeles,
California
|
-$15.2M |
| 5 |
Wellington Management Group
Boston,
Massachusetts
|
-$13.7M |
TS Hedge Fund Activity: Q1 2026 in Review
264 of the 8,191 institutional investors tracked by Wall St. Rank reported a position in Tenaris (TS) for Q1 2026, worth a combined $2.29B — up 81% from $1.27B a quarter earlier.
Buyers outnumbered sellers: 70 funds opened new TS positions and 32 closed out — a net gain of 38 holders — while 87 added to existing stakes and 66 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $298M. The largest seller was Citadel Advisors, cutting an estimated $31.5M.
- 264 institutional investors held Tenaris (TS) as of Q1 2026, up from 229 in Q4 2025.
- Funds reported $2.29B of Tenaris stock for Q1 2026, up 81% quarter-over-quarter.
- 70 funds opened new Tenaris positions in Q1 2026 and 32 closed out, a net change of +38 holders.
- The largest Tenaris buyer in Q1 2026 was Fidelity Investments, an estimated $298M added.
- The largest Tenaris seller in Q1 2026 was Citadel Advisors, an estimated $31.5M sold.
Based on aggregated 13F filings for Q1 2026.