TS · Tenaris SA · Holdings

$57.39 +0.47 (+0.83%) At close · Sep 11

Market Cap

$28.97B

504.82M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Quarter:

Holders: 285

Total Value: $2,175,886,867

Total Shares: 39,194,375

Showing 1–100 of 295 holdings by value · page 1 of 3

Institutional Ownership Trend

26 quarters

Superinvestors Holding TS

All superinvestors →

Ray Dalio $31,530,694

Holder Concentration

Across 285 13F filers · Δ vs Mar 31, 2026

Top Holder

17.2%

−3.4 pts

Top 5

41.5%

−17.2 pts

Top 10

55.8%

−17.4 pts

HHI

547

Broadly held−377

Quarterly Activity

vs Mar 31, 2026

New

Increased

100

Decreased

Sold Out

Unchanged

Holder count: +17

Institutional value: -6.3%

Shares held: -1.8%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega JANE STREET GROUP, LLC	+722,796	876,134
Large MARSHALL WACE, LLP	+696,368	704,368
Large Bridgewater Associates, LP	+539,593	568,223
Mega MILLENNIUM MANAGEMENT LLC	+500,803	619,526
Mid Aventail Capital Group, LP	+472,574	559,941

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega FMR LLC	−1,490,807	6,760,952
Mega VAN ECK ASSOCIATES CORP	−414,506	2,478,526
Mega Invesco Ltd.	−266,955	901,517
Large Grantham, Mayo, Van Otterloo & Co. LLC	−158,015	189,569
Large RENAISSANCE TECHNOLOGIES LLC	−143,700	3,056,044

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mid Merewether Investment Management, LP	1,130,692	$62,742,099
Large Holocene Advisors, LP	1,030,105	$57,160,526
Large Freestone Grove Partners LP	504,463	$27,992,651
Small SIR Capital Management, L.P.	368,588	$20,452,948
Large LMR Partners LLP	172,323	$9,562,203

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mid Westwood Global Investments, LLC	6,673,718	$388,276,912
Small FEARNLEY ASSET MANAGEMENT AS	112,700	$6,556,886
Mid Brooklyn Investment Group	32,676	$1,901,089
Mid Twin Tree Management, LP	24,900	$1,448,682
Mid FORA Capital, LLC	22,994	$1,337,790

Filter: New 54 Increased 100 Reduced 81 Sold out 37 Unchanged 50

Showing 100 of 295

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

FMR LLC

$375,165,225

17.24%

6,760,952

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	4,627,802	$256,796,732	68.4%	Defined
STRATEGIC ADVISERS LLC	221,509	$12,291,534	3.3%	Defined
Fidelity Institutional Asset Management Trust Co	403,700	$22,401,313	6.0%	Defined
FIAM LLC	1,507,941	$83,675,646	22.3%	Defined

RENAISSANCE TECHNOLOGIES LLC

$169,579,881

7.79%

3,056,044

VAN ECK ASSOCIATES CORP

$137,533,407

6.32%

2,478,526

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
VanEck Asset Management B.V.	520,719	$28,894,697	21.0%	Sole
Held directly	1,957,807	$108,638,710	79.0%	Sole

WELLINGTON MANAGEMENT GROUP LLP

$136,396,249

6.27%

2,458,033

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wellington Management Company LLP	2,266,312	$125,757,652	92.2%	Defined
Wellington Management Hong Kong Ltd	21,668	$1,202,357	0.9%	Defined
Wellington Management International Ltd	78,401	$4,350,471	3.2%	Defined
Wellington Trust Company, NA joint	91,652	$5,085,769	3.7%	Defined

PRICE T ROWE ASSOCIATES INC /MD/

$83,392,535

3.83%

1,502,839

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price Australia Limited	4,729	$262,412	0.3%	Defined
Held directly	1,498,110	$83,130,123	99.7%	Sole

MORGAN STANLEY

$68,751,440

3.16%

1,238,988

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	14	$776	0.0%	Defined
MORGAN STANLEY & CO. LLC	11,875	$658,943	1.0%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	223,269	$12,389,196	18.0%	Defined
MORGAN STANLEY SMITH BARNEY LLC	81,937	$4,546,683	6.6%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	921,893	$51,155,842	74.4%	Defined

GOLDMAN SACHS GROUP INC

$65,450,509

3.01%

1,179,501

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	523,795	$29,065,384	44.4%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	655,706	$36,385,125	55.6%	Defined

Merewether Investment Management, LP

$62,742,099

2.88%

1,130,692

DIMENSIONAL FUND ADVISORS LP

$57,703,106

2.65%

1,039,883

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DFA Australia Ltd.	33,481	$1,857,860	3.2%	Defined
Dimensional Ireland Ltd	26,641	$1,478,309	2.6%	Defined
Held directly	979,761	$54,366,937	94.2%	Sole

Holocene Advisors, LP

$57,160,526

2.63%

1,030,105

Driehaus Capital Management LLC

$55,552,648

2.55%

1,001,129

CWA Asset Management Group, LLC

$54,784,777

2.52%

987,291

Invesco Ltd.

$50,025,177

2.30%

901,517

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	633,333	$35,143,647	70.3%	Defined
Invesco Capital Management LLC	268,184	$14,881,530	29.7%	Defined

BlackRock, Inc.

$41,479,273

1.91%

747,509

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Investment Management, LLC	651	$36,123	0.1%	Sole
Aperio Group, LLC	746,635	$41,430,776	99.9%	Sole
SpiderRock Advisors, LLC	223	$12,374	0.0%	Sole

JANE STREET GROUP, LLC

$39,771,569

1.83%

716,734

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	177,986	$9,876,443	24.8%	Defined
Jane Street Global Trading, LLC	538,748	$29,895,126	75.2%	Defined

MARSHALL WACE, LLP

$39,085,379

1.80%

704,368

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	704,368	$39,085,379	100.0%	Other

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

$34,868,360

1.60%

628,372

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MFS Institutional Advisors, Inc.	6,444	$357,577	1.0%	Defined
MFS Heritage Trust CO	4,946	$274,453	0.8%	Defined
MFS INVESTMENT MANAGEMENT CANADA LTD	16,932	$939,556	2.7%	Defined
Held directly	600,050	$33,296,774	95.5%	Sole

MILLENNIUM MANAGEMENT LLC

$34,377,497

1.58%

619,526

UBS Group AG

$32,277,422

1.48%

581,680

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	25,845	$1,434,139	4.4%	Defined
UBS AG	506,274	$28,093,144	87.0%	Defined
UBS Switzerland AG	49,552	$2,749,640	8.5%	Defined
UBS Securities LLC	9	$499	0.0%	Defined

Bridgewater Associates, LP

$31,530,694

1.45%

568,223

ASSETMARK, INC

$31,121,732

1.43%

560,853

Aventail Capital Group, LP

$31,071,126

1.43%

559,941

Freestone Grove Partners LP

$27,992,651

1.29%

504,463

SIR Capital Management, L.P.

$20,452,948

0.94%

368,588

BANK OF AMERICA CORP /DE/

$19,084,896

0.88%

343,934

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	159,783	$8,866,358	46.5%	Defined
MERRILL LYNCH, PIERCE, FENNER & SMITH INC.	88,600	$4,916,414	25.8%	Defined
BOFA SECURITIES, INC.	64,930	$3,602,965	18.9%	Defined
MANAGED ACCOUNT ADVISORS LLC	30,621	$1,699,159	8.9%	Defined

Connor, Clark & Lunn Investment Management Ltd.

$16,291,808

0.75%

293,599

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	293,599	$16,291,808	100.0%	Sole

Carrhae Capital LLP

$15,443,477

0.71%

278,311

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Carrhae Capital (DIFC) Ltd	278,311	$15,443,477	100.0%	Sole

Harding Loevner LP

$14,659,681

0.67%

264,186

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$14,194,342

0.65%

255,800

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	255,800	$14,194,342	100.0%	Other

CITADEL ADVISORS LLC

$12,922,288

0.59%

232,876

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	218,264	$12,111,469	93.7%	Defined
Held directly	14,612	$810,819	6.3%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$11,819,370

0.54%

213,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	213,000	$11,819,370	100.0%	Other

NORTHERN TRUST CORP

$11,726,478

0.54%

211,326

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	211,326	$11,726,478	100.0%	Defined

Capital Wealth Planning, LLC

$11,564,559

0.53%

208,408

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Amplify Investments, LLC	208,408	$11,564,559	100.0%	Other

Grantham, Mayo, Van Otterloo & Co. LLC

$10,519,183

0.48%

189,569

AQR CAPITAL MANAGEMENT LLC

$10,181,082

0.47%

183,476

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DOPKINS WEALTH MANAGEMENT, LLC	115	$6,381	0.1%	Other
Arax Advisory Partners	4,172	$231,504	2.3%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	250	$13,872	0.1%	Other
Held directly	178,939	$9,929,325	97.5%	Defined

Kiltearn Partners LLP

$9,642,275

0.44%

173,766

LMR Partners LLP

$9,562,203

0.44%

172,323

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
LMR Partners LLC	169,023	$9,379,086	98.1%	Sole
Held directly joint	3,300	$183,117	1.9%	Other

Quantinno Capital Management LP

$9,088,263

0.42%

163,782

NATIONAL BANK OF CANADA /FI/

$8,129,118

0.37%

146,497

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
National Bank Financial Inc.	146,497	$8,129,118	100.0%	Defined

STATE STREET CORP

$7,961,538

0.37%

143,477

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SSGA FUNDS MANAGEMENT, INC. joint	143,477	$7,961,538	100.0%	Defined

Medina Value Partners, LLC

$7,441,652

0.34%

134,108

Legal & General Group Plc

$7,193,557

0.33%

129,637

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management Ltd	129,637	$7,193,557	100.0%	Defined

CAPITAL FUND MANAGEMENT S.A.

$6,960,665

0.32%

125,440

XTX Topco Ltd

$6,917,161

0.32%

124,656

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	124,656	$6,917,161	100.0%	Defined

HRT FINANCIAL LP

$6,896,741

0.32%

124,288

Y-Intercept (Hong Kong) Ltd

$6,235,022

0.29%

112,363

JANE STREET GROUP, LLC

$6,037,312

0.28%

108,800

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	108,800	$6,037,312	100.0%	Defined

Lighthouse Investment Partners, LLC

$5,862,795

0.27%

105,655

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
North Rock Capital Management, LLC	105,655	$5,862,795	100.0%	Defined

Point72 Asset Management, L.P.

$5,743,325

0.26%

103,502

PEAK6 LLC

$5,549,000

0.26%

100,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PEAK6 Investments LLC joint	100,000	$5,549,000	100.0%	Defined

Ethic Inc.

$5,492,844

0.25%

98,988

ExodusPoint Capital Management, LP

$5,107,521

0.23%

92,044

Creative Planning

$4,935,390

0.23%

88,942

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
CREATIVE PLANNING TRUST Co LLC	4,875	$270,513	5.5%	Defined
Held directly	84,067	$4,664,877	94.5%	Sole

SILVERCREST ASSET MANAGEMENT GROUP LLC

$4,488,308

0.21%

80,885

LEUTHOLD GROUP, LLC

$4,459,564

0.20%

80,367

Energy Income Partners, LLC

$4,449,188

0.20%

80,180

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FIRST TRUST ADVISORS LP	65,180	$3,616,838	81.3%	Other
Held directly	15,000	$832,350	18.7%	Sole

Integrated Quantitative Investments LLC

$4,202,479

0.19%

75,734

AMERICAN CENTURY COMPANIES INC

$3,602,577

0.17%

64,923

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AMERICAN CENTURY INVESTMENT MANAGEMENT INC	64,923	$3,602,577	100.0%	Defined

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$3,598,747

0.17%

64,854

CITIGROUP INC

$3,565,230

0.16%

64,250

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citibank, N.A. joint	51	$2,829	0.1%	Defined
Citigroup Financial Products Inc. joint	64,199	$3,562,401	99.9%	Defined

GUGGENHEIM CAPITAL LLC

$3,426,063

0.16%

61,742

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GUGGENHEIM FUNDS DISTRIBUTORS, LLC	27,515	$1,526,807	44.6%	Defined
SECURITY INVESTORS LLC	34,227	$1,899,256	55.4%	Defined

FIRST TRUST ADVISORS LP

$3,350,708

0.15%

60,384

LAZARD ASSET MANAGEMENT LLC

$3,256,153

0.15%

58,680

JANE STREET GROUP, LLC

$2,807,794

0.13%

50,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	50,600	$2,807,794	100.0%	Defined

J. Goldman & Co LP

$2,746,755

0.13%

49,500

Nuveen, LLC

$2,608,529

0.12%

47,009

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	47,009	$2,608,529	100.0%	Defined

WELLS FARGO & COMPANY/MN

$2,600,259

0.12%

46,860

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	5,903	$327,557	12.6%	Defined
WELLS FARGO CLEARING SERVICES, LLC	3,885	$215,578	8.3%	Defined
Wells Fargo Securities, LLC	37,019	$2,054,184	79.0%	Defined
WELLS FARGO INVESTMENT INSTITUTE, INC.	53	$2,940	0.1%	Defined

Campbell & CO Investment Adviser LLC

$2,584,668

0.12%

46,579

CENTRAL VALLEY ADVISORS, LLC

$2,584,280

0.12%

46,572

CITADEL ADVISORS LLC

$2,580,285

0.12%

46,500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	46,500	$2,580,285	100.0%	Defined

Balyasny Asset Management L.P.

$2,510,256

0.12%

45,238

HIGHLAND CAPITAL MANAGEMENT, LLC

$2,439,895

0.11%

43,970

Vident Advisory, LLC

$2,396,556

0.11%

43,189

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Blue Trust, Inc.	18,925	$1,050,148	43.8%	Defined
HANetf Management Limited	1,543	$85,621	3.6%	Defined
Faith Investor Services, LLC	22,591	$1,253,574	52.3%	Defined
Held directly	130	$7,213	0.3%	Sole

ACADIAN ASSET MANAGEMENT LLC

$2,301,780

0.11%

41,481

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	41,481	$2,301,780	100.0%	Defined

Pathstone Holdings, LLC

$2,238,465

0.10%

40,340

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
ADVISOR PARTNERS II, LLC	24,133	$1,339,140	59.8%	Defined
Willow Street Trust Co of Wyoming, LLC	48	$2,663	0.1%	Other
Held directly	16,159	$896,662	40.1%	Sole

GTS SECURITIES LLC

$2,218,545

0.10%

39,981

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

$2,167,605

0.10%

39,063

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	6,872	$381,327	17.6%	Defined
UBS Asset Management Switzerland AG	32,191	$1,786,278	82.4%	Defined

Mariner, LLC

$2,040,589

0.09%

36,774

Walleye Capital LLC

$2,033,763

0.09%

36,651

BANK OF MONTREAL /CAN/

$2,025,273

0.09%

36,498

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BMO Bank N.A.	1,039	$57,654	2.8%	Defined
BMO Family Office, LLC	2,821	$156,537	7.7%	Defined
BMO NESBITT BURNS INC.	32,638	$1,811,082	89.4%	Defined

MANNING & NAPIER ADVISORS LLC

$2,019,836

0.09%

36,400

JPMORGAN CHASE & CO

$1,952,522

0.09%

35,187

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Trust Co of Delaware	531	$29,464	1.5%	Other
JPMorgan Chase Bank, N.A.	14,122	$783,628	40.1%	Other
J.P. Morgan Investment Management Inc.	19,695	$1,092,875	56.0%	Defined
J.P. Morgan Securities LLC	817	$45,335	2.3%	Defined
J.P. Morgan Securities plc	22	$1,220	0.1%	Defined

O'SHAUGHNESSY ASSET MANAGEMENT, LLC

$1,879,446

0.09%

33,870

NEW YORK STATE COMMON RETIREMENT FUND

$1,853,310

0.09%

33,399

Cerity Partners LLC

$1,801,370

0.08%

32,463

Fulcrum Asset Management LLP

$1,779,897

0.08%

32,076

MERCER GLOBAL ADVISORS INC /ADV

$1,728,735

0.08%

31,154

Mork Capital Management, LLC

$1,571,476

0.07%

28,320

VANGUARD CAPITAL MANAGEMENT LLC

$1,475,423

0.07%

26,589

VIKING FUND MANAGEMENT LLC

$1,387,250

0.06%

25,000

Schonfeld Strategic Advisors LLC

$1,385,529

0.06%

24,969

Cadence Wealth Management LLC

$1,379,647

0.06%

24,863

Savant Capital, LLC

$1,364,055

0.06%

24,582

Callan Family Office, LLC

$1,358,506

0.06%

24,482

Hennion & Walsh Asset Management, Inc.

$1,353,012

0.06%

24,383

AMERIPRISE FINANCIAL INC

$1,319,772

0.06%

23,784

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	22,524	$1,249,856	94.7%	Defined
Ameriprise Financial Services, LLC joint	1,260	$69,916	5.3%	Defined

Vanguard Personalized Indexing Management, LLC

$1,309,231

0.06%

23,594

EVERGREEN CAPITAL MANAGEMENT LLC

$1,278,656

0.06%

23,043

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Aperio Group, LLC	23,043	$1,278,656	100.0%	Other

Laird Norton Wetherby Trust Company, LLC

$1,271,053

0.06%

22,906

Tidal Investments LLC

$1,201,913

0.06%

21,660

Key facts CIK 1190723 CUSIP 88031M109 13F (30d) 124 filings 123 filers Visit website Investor relations