Tenaris TS Institutional Ownership

NYSE TS

$55.17 +0.13 (+0.24%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

284 Institutions

Increased 155 54.6%

Unchanged 50 17.6%

Reduced 79 27.8%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

3.64%

▼-0.08 pp QoQ

Shares Held by Institutions

38.45Mn

of 1.06Bn outstanding

▲+18.81% QoQ

Shares Outstanding

1.06Bn

1.02Bn held outside 13F filers

Institutional Investors

284

filed 13F for Jun 2026

▲+21 vs prior quarter

Net Shares Added (QoQ)

+6.09Mn

accumulated since last quarter

Value of Holdings

$2.12Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Tenaris Sa (NYSE:TS) showed up in the 13F filings of 284 institutional investors as of June 2026.

These investors held 3.6% of outstanding shares in June 2026, down from 3.7% in March 2026.
Their total shares held in TS increased 18.81% from the prior quarter, while the number of investors in Tenaris increased 27.93% year over year.
Activity in TS broke down as 155 buyers, 79 sellers, and 50 unchanged among 284 total holders.
In total, institutional investors held 38.45Mn shares in Tenaris as of June 2026, up by 6.09Mn shares quarter on quarter, and down 4.6Mn shares year over year.
As of June 30, 2026, the biggest holder of Tenaris is FMR LLC at 6.76Mn shares, representing 0.64% of shares outstanding.
Leading buyers of Tenaris shares for the quarter ending June 2026 were Merewether Investment Management, LP (1.13Mn), Holocene Advisors, LP (1.03Mn), MARSHALL WACE, LLP (696.37K), JANE STREET GROUP, LLC (615.9K), MILLENNIUM MANAGEMENT LLC (550.8K).
Leading sellers of Tenaris shares for the quarter ending June 2026 were FMR LLC (1.49Mn), VAN ECK ASSOCIATES CORP (414.51K), Invesco Ltd. (266.96K), Grantham, Mayo, Van Otterloo & Co. LLC (158.02K), RENAISSANCE TECHNOLOGIES LLC (143.7K).
Tenaris's 10 largest shareholders as of June 2026 include FMR LLC (6.76Mn), RENAISSANCE TECHNOLOGIES LLC (3.06Mn), VAN ECK ASSOCIATES CORP (2.48Mn), WELLINGTON MANAGEMENT GROUP LLP (2.46Mn), PRICE T ROWE ASSOCIATES INC /MD/ (1.5Mn), Morgan Stanley (1.24Mn), Goldman Sachs Group Inc (1.18Mn), Merewether Investment Management, LP (1.13Mn), DIMENSIONAL FUND ADVISORS LP (1.04Mn), Holocene Advisors, LP (1.03Mn) per Business Quant data.

Form 13F Holdings

284 Institutional Holders

Report period 30 Jun, 2026

Total shares held 38.45Mn

Of outstanding 3.64%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	FMR LLC	0000315066	6,760,952	0.64%	▼1,490,807	-18.07%	$375.17Mn
2	RENAISSANCE TECHNOLOGIES LLC	0001037389	3,056,044	0.29%	▼143,700	-4.49%	$169.58Mn
3	VAN ECK ASSOCIATES CORP	0000869178	2,478,526	0.23%	▼414,506	-14.33%	$137.53Mn
4	WELLINGTON MANAGEMENT GROUP LLP	0000902219	2,458,033	0.23%	▲52,999	+2.20%	$136.40Mn
5	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	1,502,839	0.14%	▲57,629	+3.99%	$83.39K
6	Morgan Stanley	0000895421	1,238,988	0.12%	▲60,919	+5.17%	$68.75Mn
7	Goldman Sachs Group Inc	0000886982	1,179,501	0.11%	▲458,607	+63.62%	$65.45Mn
8	Merewether Investment Management, LP	0001736852	1,130,692	0.11%	▲1,130,692	0.00%	$62.74Mn
9	DIMENSIONAL FUND ADVISORS LP	0000354204	1,039,883	0.10%	▼81,124	-7.24%	$57.70Mn
10	Holocene Advisors, LP	0001700574	1,030,105	0.10%	▲1,030,105	0.00%	$57.16Mn
11	DRIEHAUS CAPITAL MANAGEMENT LLC	0000938206	1,001,129	0.09%	▲112,783	+12.70%	$55.55Mn
12	CWA Asset Management Group, LLC	0001667134	987,291	0.09%	▲480,741	+94.90%	$54.78Mn
13	Invesco Ltd.	0000914208	901,517	0.09%	▼266,955	-22.85%	$50.03Mn
14	BlackRock, Inc.	0002012383	747,509	0.07%	▲31,718	+4.43%	$41.48Mn
15	JANE STREET GROUP, LLC	0001595888	716,734	0.07%	▲615,896	+610.78%	$39.77Mn
16	MARSHALL WACE, LLP	0001318757	704,368	0.07%	▲696,368	+8,704.60%	$39.09Mn
17	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	0000912938	628,372	0.06%	▼18,482	-2.86%	$35.26Mn
18	MILLENNIUM MANAGEMENT LLC	0001273087	619,526	0.06%	▲550,803	+801.48%	$34.38Mn
19	UBS Group AG	0001610520	581,680	0.06%	▲82,702	+16.57%	$32.28Mn
20	Bridgewater Associates, LP	0001350694	568,223	0.05%	▲539,593	+1,884.71%	$31.53Mn

Showing 1 to 20 of 284 holders