What does CUSIP 88031M109 represent in this 13F holders report?

CUSIP 88031M109 is the security identifier for TS - TENARIS SA - Ordinary Shares, $1.00 par value per share used to aggregate holder disclosures.

How many institutions held TS - TENARIS SA - Ordinary Shares, $1.00 par value per share in Q4 2017?

173 institutional investors reported TS - TENARIS SA - Ordinary Shares, $1.00 par value per share for Q4 2017. Use the holders table for investor-level position and value details.

TENARIS SA - Ordinary Shares, $1.00 par value per share (TS)

CUSIP: 88031M109

Q4 2017 13F Holders as of 31 Dec 2017

Security type / class: Equity / Ordinary Shares, $1.00 par value per share
Shares outstanding: 1,008,870,971
Total 13F shares: 76,264,068
Share change: -13,280,545
Total reported value: $2,429,565,341
Put/Call ratio: 51%
Reported price per share: $31.86
Number of holders: 173
Value change: -$415,381,809
Number of buys: 83
Number of sells: 73

Security key

88031M109

Report period

Q4 2017

Institutions

173

Top holders

TS full security history Ownership snapshot Full 13F holder table Newer quarter: Q1 2018 Previous quarter: Q3 2017 TENARIS SA SEC filings TENARIS SA company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 88031M109

Newer quarter: Q1 2018 Previous quarter: Q3 2017

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top shareholders 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.

Lead holder

Aberdeen Group plc

13D/G signal

—

Evidence rows

Latest as of

30 Sep 2017

13F Lead comparable stake: 2% Showing first 8 of 50 holder rows. Open remaining rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Aberdeen Group plc	13F Company 13F	2%	$564,937,000 19,951,899 shares	—	30 Sep 2017
HARDING LOEVNER LP	13F Company 13F	1.5%	$422,902,000 14,938,263 shares	—	30 Sep 2017
Westwood Global Investments, LLC	13F Company 13F	0.78%	$221,490,000 7,823,734 shares	—	30 Sep 2017
Ruffer LLP	13F Company 13F	0.57%	$162,800,000 5,749,617 shares	—	30 Sep 2017
VAN ECK ASSOCIATES CORP	13F Company 13F	0.36%	$102,168,000 3,608,913 shares	—	30 Sep 2017
PRICE T ROWE ASSOCIATES INC /MD/	13F Company 13F	0.32%	$90,031,000 3,180,200 shares	—	30 Sep 2017
LUMINUS MANAGEMENT LLC	13F Company 13F	0.27%	$77,468,000 2,736,404 shares	—	30 Sep 2017
WELLINGTON MANAGEMENT GROUP LLP	13F Company 13F	0.26%	$75,535,000 2,668,159 shares	—	30 Sep 2017

Show 42 additional holder rows in the full holder list

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
MACKENZIE FINANCIAL CORP	13F Company 13F	0.21%	$61,284,000 2,164,733 shares	—	30 Sep 2017
WESTWOOD HOLDINGS GROUP INC	13F Company 13F	0.19%	$54,265,000 1,916,814 shares	—	30 Sep 2017
MILLENNIUM MANAGEMENT LLC	13F Company 13F	0.16%	$44,789,000 1,582,081 shares	—	30 Sep 2017
MORGAN STANLEY	13F Company 13F	0.14%	$39,390,000 1,391,394 shares	—	30 Sep 2017
GOLDMAN SACHS GROUP INC	13F Company 13F	0.12%	$35,580,000 1,256,785 shares	—	30 Sep 2017
WADDELL & REED FINANCIAL INC	13F Company 13F	0.12%	$33,913,000 1,197,900 shares	—	30 Sep 2017
Sheffield Asset Management, L.L.C.	13F Company 13F	0.1%	$28,272,000 998,647 shares	—	30 Sep 2017
Legal & General Group Plc	13F Company 13F	0.1%	$27,576,000 973,908 shares	—	30 Sep 2017
JENNISON ASSOCIATES LLC	13F Company 13F	0.09%	$26,430,000 933,609 shares	—	30 Sep 2017
NWQ INVESTMENT MANAGEMENT COMPANY, LLC	13F Company 13F	0.07%	$20,094,000 709,790 shares	—	30 Sep 2017
CREDIT SUISSE AG/	13F Company 13F	0.07%	$19,792,000 699,107 shares	—	30 Sep 2017
FRANKLIN RESOURCES INC	13F Company 13F	0.07%	$19,752,000 697,721 shares	—	30 Sep 2017
Global X Management CO LLC	13F Company 13F	0.07%	$18,969,000 670,038 shares	—	30 Sep 2017
Russell Investments Group, Ltd.	13F Company 13F	0.06%	$18,100,000 639,320 shares	—	30 Sep 2017
ARIEL INVESTMENTS, LLC	13F Company 13F	0.06%	$17,830,000 629,830 shares	—	30 Sep 2017
CITADEL ADVISORS LLC	13F Company 13F	0.06%	$17,569,000 620,559 shares	—	30 Sep 2017
Calamos Advisors LLC	13F Company 13F	0.06%	$17,133,000 605,199 shares	—	30 Sep 2017
NORTHERN TRUST CORP	13F Company 13F	0.06%	$15,995,000 564,993 shares	—	30 Sep 2017
TVR Capital Management LP	13F Company 13F	0.06%	$15,785,000 557,600 shares	—	30 Sep 2017
D. E. Shaw & Co., Inc.	13F Company 13F	0.05%	$14,724,000 520,104 shares	—	30 Sep 2017
RENAISSANCE TECHNOLOGIES LLC	13F Company 13F	0.05%	$14,223,000 502,400 shares	—	30 Sep 2017
Capital International Sarl	13F Company 13F	0.05%	$13,201,000 466,300 shares	—	30 Sep 2017
OLD MISSION CAPITAL LLC	13F Company 13F	0.04%	$10,735,000 379,180 shares	—	30 Sep 2017
NORGES BANK	13F Company 13F	0.04%	$10,107,000 357,005 shares	—	30 Sep 2017
DEUTSCHE BANK AG\	13F Company 13F	0.03%	$9,930,000 350,773 shares	—	30 Sep 2017
VANGUARD GROUP INC	13F Company 13F	0.03%	$9,412,000 332,472 shares	—	30 Sep 2017
AGF INVESTMENTS INC.	13F Company 13F	0.03%	$9,016,000 318,474 shares	—	30 Sep 2017
Bank of New York Mellon Corp	13F Company 13F	0.03%	$8,711,000 307,682 shares	—	30 Sep 2017
Capital International Investors	13F Company 13F	0.03%	$8,533,000 301,400 shares	—	30 Sep 2017
FEDERATED HERMES, INC.	13F Company 13F	0.03%	$8,427,000 297,673 shares	—	30 Sep 2017
PARAMETRIC PORTFOLIO ASSOCIATES LLC	13F Company 13F	0.03%	$8,130,000 287,165 shares	—	30 Sep 2017
Granite Investment Advisors, LLC	13F Company 13F	0.02%	$6,323,000 223,344 shares	—	30 Sep 2017
BANK OF AMERICA CORP /DE/	13F Company 13F	0.02%	$6,108,000 215,742 shares	—	30 Sep 2017
SIR Capital Management, L.P.	13F Company 13F	0.02%	$5,895,000 208,242 shares	—	30 Sep 2017
LAZARD ASSET MANAGEMENT LLC	13F Company 13F	0.02%	$5,791,000 204,569 shares	—	30 Sep 2017
WELLS FARGO & COMPANY/MN	13F Company 13F	0.02%	$5,231,000 184,785 shares	—	30 Sep 2017
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	13F Company 13F	0.02%	$5,178,000 182,900 shares	—	30 Sep 2017
Aperio Group, LLC	13F Company 13F	0.02%	$5,144,000 181,718 shares	—	30 Sep 2017
SG Americas Securities, LLC	13F Company 13F	0.02%	$5,005,000 176,797 shares	—	30 Sep 2017
DSAM Partners (London) Ltd	13F Company 13F	0.02%	$4,784,000 168,984 shares	—	30 Sep 2017
GLG Partners LP	13F Company 13F	0.02%	$4,732,000 167,165 shares	—	30 Sep 2017
AMERIPRISE FINANCIAL INC	13F Company 13F	0.02%	$4,410,000 155,315 shares	—	30 Sep 2017

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 Q4 2017

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

173

76,264,068

Rows loaded

173

Investor	Option	Weight %	Change %	Reported value	* Price	Shares	Share Change	Activity	Report Period

* 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. An asterisk next to the price means the price is likely invalid.

Compare Q4 2017 vs Q3 2017 Across Filers

Q3 2017 holders

163

Q4 2017 holders

173

Holder diff

Investor	Q3 2017 Shares	Q4 2017 Shares	Share Diff	Share Chg %	Q3 2017 value	Q4 2017 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend