Security key
88031M109
TENARIS SA - Ordinary Shares, $1.00 par value per share (TS)
CUSIP: 88031M109
Q2 2025 13F Holders as of 30 Jun 2025
- Security type / class
- Equity / Ordinary Shares, $1.00 par value per share
- Total 13F shares
- 45,891,964
- Total 13F value
- $1,708,084,599
- Share change
- -4,707,745
- Put/Call ratio
- 150%
- SEC-reported price per share
- $37.40
- Number of holders
- 220
- Value change
- -$183,845,232
- Number of buys
- 122
- Number of sells
- 106
- Shares outstanding
- 1,008,870,971
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q2 2025
Institutions
220
Top holders
10
TS full security history
Ownership snapshot
Full 13F holder table
TENARIS SA SEC filings
TENARIS SA company facts
Broader feeds
Ownership snapshot
Top reported holders of TS - TENARIS SA - Ordinary Shares, $1.00 par value per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Westwood Global Investmen...
Disclosed value leader
Westwood Global Investmen...
Comparable rows
15/15
Latest evidence
31 Mar 2025
13F
Lead comparable stake: 0.76%
Showing 1-6 of 15 holder rows.
Quick read
Westwood Global Investments, LLC leads the comparable SEC ownership view at 0.76%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Westwood Global Investments, LLC's linked filing trail.
Comparable ownership
Top 5
Westwood Global Investments, LLC
0.76%
CITADEL ADVISORS LLC
0.37%
RENAISSANCE TECHNOLOGIES LLC
0.27%
Sourcerock Group LLC
0.24%
Alua Capital Management LP
0.24%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Westwood Global Investments, LLC |
13F
Company
|
0.76%
|
$300,081,605
7,672,759 shares
|
— | 31 Mar 2025 |
| CITADEL ADVISORS LLC |
13F
Company
|
0.37%
|
$147,300,384
3,766,310 shares
|
— | 31 Mar 2025 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
0.27%
|
$105,708,229
2,702,844 shares
|
— | 31 Mar 2025 |
| Sourcerock Group LLC |
13F
Company
|
0.24%
|
$95,829,590
2,450,258 shares
|
— | 31 Mar 2025 |
| Alua Capital Management LP |
13F
Company
|
0.24%
|
$93,369,767
2,387,363 shares
|
— | 31 Mar 2025 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
Company
|
0.23%
|
$91,013,546
2,327,117 shares
|
— | 31 Mar 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q2 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
220
Shares
45,891,964
Rows available
220
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q2 2025 vs Q1 2025 Across Filers
Q1 2025 holders
222
Q2 2025 holders
220
Holder diff
-2
| Investor | Q1 2025 Shares | Q2 2025 Shares | Share Diff | Share Chg % | Q1 2025 value | Q2 2025 value | Value change | Value Chg % |
|---|