TS · Tenaris SA · Shareholders & Ownership

$60.32 +1.01 (+1.70%) At close · Oct 27 Q2 2026 earnings call transcript

Market Cap

$30.14B

504.82M

Volume · Oct 27 1.3M Avg daily vol (3M) 1.29M

Every disclosed holder of TS in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns TS

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

No chart: shares outstanding cannot be set against these holders.

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	296	38,249,947	—	Yes
Insiders (Forms 3, 4, 5)	0	0	—	Yes
13D/G-only blocks	1	692,085,486	—	Yes
Registered funds (N-PORT, not summed)	83	10,801,899	—	No

% Out is unavailable: a foreign private issuer reports ordinary shares, a different unit from the listed shares.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of TS

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	SAN FAUSTIN S.A. 13D CIK 1429586 · Unknown · Feb 6, 2026 Item 4 purpose: not restated by this amendment, the earlier 13D's purpose stands	692,085,486	—	-18,919,701	Feb 6, 2026
2	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	6,760,952	—	-1,490,807	Jun 30, 2026	carried, not yet filed for the newest quarter
2.1	Fidelity Advisor Focused Emerging Markets Fund Fund S000005437 · Registered fund · Jul 31, 2026 Fidelity Advisor Series VIII, not summed	1,916,600	—	-396,800	Jul 31, 2026	Fidelity Advisor Series VIII, not summed
2.2	Fidelity Series Emerging Markets Opportunities Fund Fund S000023605 · Registered fund · Jul 31, 2026 Fidelity Investment Trust, not summed	1,019,000	—	-75,800	Jul 31, 2026	Fidelity Investment Trust, not summed
2.3	VIP Emerging Markets Portfolio Fund S000039296 · Registered fund · Jun 30, 2026 Variable Insurance Products Fund II, not summed	263,900	—	-50,500	Jun 30, 2026	Variable Insurance Products Fund II, not summed
2.4	Fidelity Enhanced International ETF Fund S000081802 · Registered fund · Jun 30, 2026 Fidelity Covington Trust, not summed	149,088	—	—	Jun 30, 2026	Fidelity Covington Trust, not summed
2.5	Fidelity Natural Resources Fund Fund S000007478 · Registered fund · Aug 31, 2026 Fidelity Select Portfolios, not summed	115,500	—	—	Aug 31, 2026	Fidelity Select Portfolios, not summed
3	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,056,044	—	-143,700	Jun 30, 2026	carried, not yet filed for the newest quarter
4	VAN ECK ASSOCIATES CORP 13F CIK 869178 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,478,526	—	-414,506	Jun 30, 2026	carried, not yet filed for the newest quarter
4.1	VanEck Oil Services ETF Fund S000034408 · Registered fund · Jun 30, 2026 VanEck ETF Trust, not summed	1,837,574	—	-211,707	Jun 30, 2026	VanEck ETF Trust, not summed
4.2	VanEck Steel ETF Fund S000013721 · Registered fund · Jun 30, 2026 VanEck ETF Trust, not summed	120,233	—	+15,544	Jun 30, 2026	VanEck ETF Trust, not summed
5	WELLINGTON MANAGEMENT GROUP LLP 13F CIK 902219 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	2,458,033	—	+52,999	Jun 30, 2026	carried, not yet filed for the newest quarter
6	PRICE T ROWE ASSOCIATES INC /MD/ 13F CIK 80255 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,502,839	—	+57,629	Jun 30, 2026	carried, not yet filed for the newest quarter
6.1	T. Rowe Price Real Assets Fund, Inc. Fund S000029428 · Registered fund · Jun 30, 2026 T. ROWE PRICE REAL ASSETS FUND, INC., not summed	370,041	—	0	Jun 30, 2026	T. ROWE PRICE REAL ASSETS FUND, INC., not summed
6.2	T. Rowe Price New Era Fund Fund S000002105 · Registered fund · Jun 30, 2026 T. ROWE PRICE NEW ERA FUND, INC., not summed	356,711	—	0	Jun 30, 2026	T. ROWE PRICE NEW ERA FUND, INC., not summed
6.3	T. Rowe Price Global Allocation Fund Fund S000040952 · Registered fund · Jul 31, 2026 T. ROWE PRICE GLOBAL ALLOCATION FUND, INC., not summed	1,280	—	+96	Jul 31, 2026	T. ROWE PRICE GLOBAL ALLOCATION FUND, INC., not summed
7	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	1,238,988	—	+60,919	Jun 30, 2026	carried, not yet filed for the newest quarter
8	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	1,179,501	—	+458,607	Jun 30, 2026	carried, not yet filed for the newest quarter
9	Merewether Investment Management, LP 13F CIK 1736852 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,130,692	—	+1,130,692	Jun 30, 2026	carried, not yet filed for the newest quarter
10	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,039,883	—	-81,124	Jun 30, 2026	carried, not yet filed for the newest quarter
10.1	THE DFA INTERNATIONAL VALUE SERIES Fund S000000994 · Registered fund · Jul 31, 2026 DFA INVESTMENT TRUST CO, not summed	322,197	—	0	Jul 31, 2026	DFA INVESTMENT TRUST CO, not summed
10.2	Dimensional International Value ETF Fund S000070904 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	247,068	—	+13,552	Jul 31, 2026	Dimensional ETF Trust, not summed
10.3	INTERNATIONAL CORE EQUITY 2 PORTFOLIO Fund S000000983 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	119,719	—	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
10.4	Dimensional International Core Equity 2 ETF Fund S000075152 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	92,234	—	0	Jul 31, 2026	Dimensional ETF Trust, not summed
10.5	Dimensional World ex. U.S. Core Equity 2 ETF Fund S000070905 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	39,550	—	0	Jul 31, 2026	Dimensional ETF Trust, not summed
11	Holocene Advisors, LP 13F CIK 1700574 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,030,105	—	+1,030,105	Jun 30, 2026	carried, not yet filed for the newest quarter
12	Driehaus Capital Management LLC 13F CIK 938206 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,001,129	—	+112,783	Jun 30, 2026	carried, not yet filed for the newest quarter
12.1	Driehaus Emerging Markets Growth Fund Fund S000001909 · Registered fund · Jun 30, 2026 Driehaus Mutual Funds, not summed	444,143	—	+49,951	Jun 30, 2026	Driehaus Mutual Funds, not summed
13	Invesco Ltd. 13F CIK 914208 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	901,517	—	-266,955	Jun 30, 2026	carried, not yet filed for the newest quarter
13.1	Invesco International Small-Mid Company Fund Fund S000064623 · Registered fund · Jul 31, 2026 AIM International Mutual Funds (Invesco International Mutual Funds), not summed	392,759	—	-63,122	Jul 31, 2026	AIM International Mutual Funds (Invesco International Mutual Funds), not summed
13.2	Invesco International Dividend AchieversTM ETF Fund S000003036 · Registered fund · Jul 31, 2026 Invesco Exchange-Traded Fund Trust, not summed	251,927	—	-73,587	Jul 31, 2026	Invesco Exchange-Traded Fund Trust, not summed
13.3	Invesco Global Opportunities Fund Fund S000064625 · Registered fund · Jul 31, 2026 AIM International Mutual Funds (Invesco International Mutual Funds), not summed	161,946	—	-18,369	Jul 31, 2026	AIM International Mutual Funds (Invesco International Mutual Funds), not summed
13.4	Invesco Zacks Multi-Asset Income ETF Fund S000060805 · Registered fund · Jul 31, 2026 Invesco Exchange-Traded Fund Trust, not summed	14,479	—	—	Jul 31, 2026	Invesco Exchange-Traded Fund Trust, not summed
14	CWA Asset Management Group, LLC 13F CIK 1667134 · Registered investment adviser · Sep 30, 2026	829,599	—	-157,692	Sep 30, 2026
15	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	747,509	—	+31,718	Jun 30, 2026	carried, not yet filed for the newest quarter
16	JANE STREET GROUP, LLC 13F CIK 1595888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	716,734	—	+615,896	Jun 30, 2026	carried, not yet filed for the newest quarter
17	MARSHALL WACE, LLP 13F CIK 1318757 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	704,368	—	+696,368	Jun 30, 2026	carried, not yet filed for the newest quarter
18	MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 13F CIK 912938 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	628,372	—	-18,482	Jun 30, 2026	carried, not yet filed for the newest quarter
18.1	MFS International New Discovery Fund Fund S000002437 · Registered fund · Jun 30, 2026 MFS Series Trust V, not summed	598,667	—	-13,251	Jun 30, 2026	MFS Series Trust V, not summed
18.2	MFS Global Alternative Strategy Fund Fund S000019515 · Registered fund · Jul 31, 2026 MFS Series Trust XV, not summed	1,365	—	-1,669	Jul 31, 2026	MFS Series Trust XV, not summed
19	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	619,526	—	+550,803	Jun 30, 2026	carried, not yet filed for the newest quarter
20	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	581,680	—	+82,702	Jun 30, 2026	carried, not yet filed for the newest quarter
21	ASSETMARK, INC 13F CIK 1344551 · Registered investment adviser · Sep 30, 2026	572,805	—	+11,952	Sep 30, 2026
22	Bridgewater Associates, LP 13F CIK 1350694 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	568,223	—	+539,593	Jun 30, 2026	carried, not yet filed for the newest quarter
23	Aventail Capital Group, LP 13F CIK 1803822 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	559,941	—	+472,574	Jun 30, 2026	carried, not yet filed for the newest quarter
24	Freestone Grove Partners LP 13F CIK 2007591 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	504,463	—	+504,463	Jun 30, 2026	carried, not yet filed for the newest quarter
25	SIR Capital Management, L.P. 13F CIK 1434997 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	368,588	—	+368,588	Jun 30, 2026	carried, not yet filed for the newest quarter
26	BANK OF AMERICA CORP /DE/ 13F CIK 70858 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	343,934	—	+185,497	Jun 30, 2026	carried, not yet filed for the newest quarter
27	Connor, Clark & Lunn Investment Management Ltd. 13F CIK 1596800 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	293,599	—	+115,160	Jun 30, 2026	carried, not yet filed for the newest quarter
28	Carrhae Capital LLP 13F CIK 1555254 · Registered investment adviser · Sep 30, 2026	291,886	—	+13,575	Sep 30, 2026
29	Harding Loevner LP 13F CIK 928196 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	264,186	—	-28,672	Jun 30, 2026	carried, not yet filed for the newest quarter
29.1	Harding Loevner Emerging Markets Portfolio Fund S000004201 · Registered fund · Oct 31, 2025 HARDING LOEVNER FUNDS INC, not summed	203,974	—	-18,158	Oct 31, 2025	HARDING LOEVNER FUNDS INC, not summed
29.2	Harding Loevner Institutional Emerging Markets Portfolio Fund S000004202 · Registered fund · Jul 31, 2026 HARDING LOEVNER FUNDS INC, not summed	189,921	—	-24,516	Jul 31, 2026	HARDING LOEVNER FUNDS INC, not summed
30	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	232,876	—	-59,547	Jun 30, 2026	carried, not yet filed for the newest quarter
31	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	211,326	—	-6,572	Jun 30, 2026	carried, not yet filed for the newest quarter
31.1	Active M Emerging Markets Equity Fund Fund S000024144 · Registered fund · Jun 30, 2026 Northern Funds, not summed	11,092	—	-44,572	Jun 30, 2026	Northern Funds, not summed
32	Capital Wealth Planning, LLC 13F CIK 1566728 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	208,408	—	-32,106	Jun 30, 2026	carried, not yet filed for the newest quarter
33	Amplify CWP International Enhanced Dividend Income ETF Fund S000077245 · Registered fund · Jun 30, 2026 Amplify ETF Trust, not summed	207,394	—	-33,120	Jun 30, 2026	Amplify ETF Trust, not summed
34	Grantham, Mayo, Van Otterloo & Co. LLC 13F CIK 1352662 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	189,569	—	-158,015	Jun 30, 2026	carried, not yet filed for the newest quarter
34.1	GMO International Equity Fund Fund S000004224 · Registered fund · May 31, 2026 GMO TRUST, not summed	83,547	—	—	May 31, 2026	GMO TRUST, not summed
34.2	GMO Implementation Fund Fund S000036091 · Registered fund · May 31, 2026 GMO TRUST, not summed	10,602	—	-30,272	May 31, 2026	GMO TRUST, not summed
34.3	GMO Benchmark-Free Fund Fund S000033464 · Registered fund · May 31, 2026 GMO TRUST, not summed	5,365	—	-11,069	May 31, 2026	GMO TRUST, not summed
35	AQR CAPITAL MANAGEMENT LLC 13F CIK 1167557 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	183,476	—	+38,049	Jun 30, 2026	carried, not yet filed for the newest quarter
36	Kiltearn Partners LLP 13F CIK 1582633 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	173,766	—	-31,093	Jun 30, 2026	carried, not yet filed for the newest quarter
37	LMR Partners LLP 13F CIK 1578621 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	172,323	—	+172,323	Jun 30, 2026	carried, not yet filed for the newest quarter
38	Quantinno Capital Management LP 13F CIK 1759654 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	163,782	—	+17,435	Jun 30, 2026	carried, not yet filed for the newest quarter
39	NATIONAL BANK OF CANADA /FI/ 13F CIK 926171 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	146,497	—	+642	Jun 30, 2026	carried, not yet filed for the newest quarter
40	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	143,477	—	-59,701	Jun 30, 2026	carried, not yet filed for the newest quarter
40.1	State Street(R) SPDR(R) S&P Kensho Clean Power ETF Fund S000063360 · Registered fund · Jun 30, 2026 SPDR SERIES TRUST, not summed	81,299	—	-21,495	Jun 30, 2026	SPDR SERIES TRUST, not summed
40.2	State Street(R) SPDR(R) S&P Kensho New Economies Composite ETF Fund S000063362 · Registered fund · Jun 30, 2026 SPDR SERIES TRUST, not summed	57,328	—	-37,722	Jun 30, 2026	SPDR SERIES TRUST, not summed
41	Medina Value Partners, LLC 13F CIK 1843543 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	134,108	—	-119,254	Jun 30, 2026	carried, not yet filed for the newest quarter
42	Legal & General Group Plc 13F CIK 764068 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	129,637	—	-16,878	Jun 30, 2026	carried, not yet filed for the newest quarter
43	CAPITAL FUND MANAGEMENT S.A. 13F CIK 1323645 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	125,440	—	+125,440	Jun 30, 2026	carried, not yet filed for the newest quarter
44	XTX Topco Ltd 13F CIK 1828301 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	124,656	—	+110,319	Jun 30, 2026	carried, not yet filed for the newest quarter
45	HRT FINANCIAL LP 13F CIK 1475597 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	124,288	—	+84,514	Jun 30, 2026	carried, not yet filed for the newest quarter
46	Fidelity Emerging Markets Equity Central Fund Fund S000024223 · Registered fund · Jun 30, 2026 Fidelity Central Investment Portfolios LLC, not summed	111,000	—	-51,700	Jun 30, 2026	Fidelity Central Investment Portfolios LLC, not summed
47	Lighthouse Investment Partners, LLC 13F CIK 1600344 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	105,655	—	+63,155	Jun 30, 2026	carried, not yet filed for the newest quarter
48	Point72 Asset Management, L.P. 13F CIK 1603466 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	103,502	—	+103,502	Jun 30, 2026	carried, not yet filed for the newest quarter
49	Ethic Inc. 13F CIK 1780570 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	98,988	—	-26,584	Jun 30, 2026	carried, not yet filed for the newest quarter
50	ExodusPoint Capital Management, LP 13F CIK 1736225 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	92,044	—	+80,681	Jun 30, 2026	carried, not yet filed for the newest quarter

15 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 318 holders

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Key facts CIK 1190723 CUSIP 88031M109 13F (30d) 67 filings 63 filers Visit website Investor relations