TickerGuard
Buy Day today: Neutral (48) Mixed market breadth · no major macro event
TS

Tenaris SA

Energy · Oil & Gas Equipment & Services

56.10$ +1.2% vs. previous close Closing price · As of: Sep 28, 2026

Ownership

Ownership Structure

Who owns Tenaris SA (TS)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 63.1% of the shares are freely tradable; institutional investors hold 6.8%.

Institutional ownership ?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings. 6.8%
Insiders ?Share of the stock held by the executives, founders and major shareholders of the company itself. 0.00%
Float ?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders. 63.1%
Short % of float ?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices. 2.3%
Shares Outstanding ?Total number of shares issued. Price times share count gives market cap. 505Mio.

Largest Shareholders

Institutions

Institutions TS
Name Stake (%) Shares Change (%) Date
FMR Inc 1.63 8,251,759 +275.3 03/31/2026
Renaissance Technologies Corp 0.63 3,199,744 +7.9 03/31/2026
Van Eck Associates Corporation 0.57 2,893,032 +43.3 03/31/2026
Wellington Management Company LLP 0.49 2,458,033 +2.2 06/30/2026
T. Rowe Price Associates, Inc. 0.29 1,445,210 -12.4 03/31/2026
Morgan Stanley - Brokerage Accounts 0.23 1,178,069 +0.7 03/31/2026

Funds

Funds TS
Name Stake (%) Shares Change (%) Date
FIAM Concentrated Emerging Markets Comp 0.47 2,353,200 +0.0 03/31/2026
Fidelity Advisor Focused Em Mkts I 0.38 1,916,600 +0.0 07/31/2026
Vanguard Energy Opportunities Inv 0.34 1,720,815 -2.5 06/30/2026
VanEck Oil Services ETF 0.32 1,614,357 +2.2 08/29/2026

Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.

Data as of: September 28, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)

Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.

Was this page helpful to you?