Tenaris
283 hedge funds and large institutions have $2.13B invested in Tenaris in 2026 Q2 according to their latest regulatory filings, with 54 funds opening new positions, 100 increasing their positions, 79 reducing their positions, and 30 closing their positions.
100% more funds holding in top 10
Funds holding in top 10: 1 → 2 (+1)
80% more first-time investments, than exits
New positions opened: 54 | Existing positions closed: 30
27% more repeat investments, than reductions
Existing positions increased: 100 | Existing positions reduced: 79
22% more call options, than puts
Call options by funds: $28M | Put options by funds: $23M
7% more funds holding
Funds holding: 264 → 283 (+19)
0.16% less ownership
Funds ownership: 6.77% → 6.6% (-0.16%)
7% less capital invested
Capital invested by funds: $2.29B → $2.13B (-$157M)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
MIM
Merewether Investment Management
Dallas,
Texas
|
+$68.7M |
| 2 |
Holocene Advisors
New York
|
+$62.5M |
| 3 |
Marshall Wace
London,
United Kingdom
|
+$42.3M |
| 4 |
Jane Street
New York
|
+$37.4M |
| 5 |
Millennium Management
New York
|
+$33.4M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
WGI
Westwood Global Investments
Boston,
Massachusetts
|
-$388M |
| 2 |
Fidelity Investments
Boston,
Massachusetts
|
-$90.5M |
| 3 |
VanEck Associates
New York
|
-$25.2M |
| 4 |
Invesco
Atlanta,
Georgia
|
-$16.2M |
| 5 |
Grantham, Mayo, Van Otterloo & Co (GMO)
Boston,
Massachusetts
|
-$9.59M |
TS Hedge Fund Activity: Q2 2026 in Review
283 of the 8,318 institutional investors tracked by Wall St. Rank reported a position in Tenaris (TS) for Q2 2026, worth a combined $2.13B — down 6.9% from $2.29B a quarter earlier.
Buyers outnumbered sellers: 54 funds opened new TS positions and 30 closed out — a net gain of 24 holders — while 100 added to existing stakes and 79 trimmed.
The largest buyer was Merewether Investment Management, opening a new position worth an estimated $68.7M. The largest seller was Westwood Global Investments, exiting entirely with an estimated $388M sold.
- 283 institutional investors held Tenaris (TS) as of Q2 2026, up from 264 in Q1 2026.
- Funds reported $2.13B of Tenaris stock for Q2 2026, down 6.9% quarter-over-quarter.
- 54 funds opened new Tenaris positions in Q2 2026 and 30 closed out, a net change of +24 holders.
- The largest Tenaris buyer in Q2 2026 was Merewether Investment Management, an estimated $68.7M added.
- The largest Tenaris seller in Q2 2026 was Westwood Global Investments, an estimated $388M sold.
Based on aggregated 13F filings for Q2 2026.