TS Institutional Ownership
Who owns Tenaris SA and what the big funds did with it last quarter, from every SEC 13F filing. 285 funds reported holding TS at Jun 30, 2026.
- ▲151 buying vs 112 selling
- ▼Shares held by funds -2.4%
- ▲Funds holding +17
- ▲Superinvestors: 3 added, 2 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 285 | 268 | +6.3% |
| In funds' top 10 | 2 | 1 | +100.0% |
| 13F shares | 38.4M | 39.3M | −2.4% |
| Held by funds | – | – | – |
| New positions | 51 | 67 | −23.9% |
| Increased | 100 | 87 | +14.9% |
| Reduced | 81 | 69 | +17.4% |
| Sold out | 31 | 32 | −3.1% |
| Calls (shares) | 2,200 | 120K | −98.2% |
| Puts (shares) | 13K | 4,200 | +211.9% |
| Put/call ratio | 5.95 | 0.04 | +16870.5% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in TS
All superinvestors →
Who owns TS
share of fund held shares- Index and passive funds15.2%
- Active managers and hedge funds72.9%
- Banks and brokers11.9%
- Pensions, insurers and other0.1%
The top 10 holders own 57.0% of all TS shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
64 funds changed their position- CWA Asset Management Group, LLCTrimmed−158K sh
- Y-Intercept (Hong Kong) LtdTrimmed−93K sh
- Deprince Race & Zollo IncNew+68K sh
- Carrhae Capital LLPAdded+14K sh
- SmartHarvest Portfolios, LLCNew+13K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | Fmr LLC | – | 6.8M | $375M | −1.5M |
| 2 | Renaissance Technologies LLC | – | 3.1M | $170M | −144K |
| 3 | Van Eck Associates Corp | – | 2.5M | $138M | −415K |
| 4 | Wellington Management Group LLP | – | 2.5M | $136M | +53K |
| 5 | Price T Rowe Associates Inc /md/ | – | 1.5M | $83.4M | +58K |
| 6 | Morgan Stanley | – | 1.2M | $68.8M | +61K |
| 7 | Goldman Sachs Group Inc | – | 1.2M | $65.5M | +459K |
| 8 | Merewether Investment Management, LP | – | 1.1M | $62.7M | +1.1M |
| 9 | Dimensional Fund Advisors LP | – | 1M | $57.7M | −81K |
| 10 | Holocene Advisors, LP | – | 1M | $57.2M | +1M |
- Merewether Investment Management, LP+1.1M sh+$62.7M
- Holocene Advisors, LP+1M sh+$57.2M
- Marshall Wace, LLP+696K sh+$38.6M
- Jane Street Group, LLC+616K sh+$34.2M
- Millennium Management LLC+551K sh+$30.6M
- Bridgewater Associates, LP+540K sh+$29.9M
- Freestone Grove Partners LP+504K sh+$28M
- CWA Asset Management Group, LLC+481K sh+$26.7M
- Westwood Global Investments, LLC−6.7M sh−$388M
- Fmr LLC−1.5M sh−$82.7M
- Van Eck Associates Corp−415K sh−$23M
- Invesco Ltd.−267K sh−$14.8M
- Grantham, Mayo, Van Otterloo & Co. LLC−158K sh−$8.8M
- Renaissance Technologies LLC−144K sh−$8M
- Medina Value Partners, LLC−119K sh−$6.6M
- Fearnley Asset Management AS−113K sh−$6.6M
TS institutional ownership FAQ
Who owns the most TS stock?
In Q2 2026 13F filings the largest holder of TS was Fmr LLC, followed by Renaissance Technologies LLC and Van Eck Associates Corp. Index fund managers are usually the biggest holders of large companies.
What percentage of TS is owned by institutions?
285 funds reported holding 38.4M TS shares at Jun 30, 2026.
Are hedge funds buying TS?
In Q2 2026, 151 funds bought TS (51 of them new positions) and 112 sold (31 sold out completely). Among well known investors, 3 added and 2 cut. Our fund sentiment for TS is bullish.
What is TS's institutional put/call ratio?
Funds reported $727K of TS puts against $122K of calls, a put/call ratio of 5.95 (0.04 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this TS ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.