Ticker · CUSIP 88031M109

TS

ADR

TENARIS S A

Energy·Oil & Gas Equipment & Services

···Share

Holders (tracked)

Combined shares

9,647,638

Combined value

$370.95M

Last close

$58.61

Quarter

2025Q4

Price is +52.4% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$58.61+26.44 (+82.20%)H $60.35 · L $31.53 · Avg Vol 1.6M

Tracked holders · last 8 quarters

+1 vs previous quarter over the last 8.

SEC event timeline

19 events

Ken Griffin (Citadel Advisors) added2026-02-17
+920,799 shares · 2025Q4
Position
D.E. Shaw & Co. trimmed2026-02-17
−125,527 shares · 2025Q4
Position
Two Sigma Investments trimmed2026-02-17
−3,500 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2026-02-17
−418,217 shares · 2025Q4
Position
Steve Cohen (Point72) opened position2026-02-17
+266,087 shares · 2025Q4
Position
Wellington Management added2026-02-17
+546,144 shares · 2025Q4
Position
T. Rowe Price trimmed2026-02-17
−137,621 shares · 2025Q4
Position
Jeremy Grantham (GMO) added2026-02-17
+61,358 shares · 2025Q4
Position
AQR Capital Management added2026-02-17
+40,001 shares · 2025Q4
Position
Renaissance Technologies trimmed2026-02-12
−386,300 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−202,540 shares · 2025Q3
Position
Two Sigma Investments trimmed2025-11-14
−46,100 shares · 2025Q3
Position
AQR Capital Management added2025-11-14
+30,951 shares · 2025Q3
Position
D.E. Shaw & Co. added2025-11-14
+375,071 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+89,348 shares · 2025Q3
Position
Wellington Management added2025-11-14
+36,718 shares · 2025Q3
Position
Renaissance Technologies added2025-11-13
+459,100 shares · 2025Q3
Position
Jeremy Grantham (GMO) added2025-11-13
+17,013 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-12
−91,300 shares · 2024Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for TS →

Follow-the-investor returns

If you'd copied each holder of TS…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Steve Cohen (Point72)	2016Q1	$29.14	+101.1%	$15.6M
Two Sigma Investments	2016Q1	$30.41	+92.7%	$445K
T. Rowe Price	2016Q1	$31.67	+85.1%	$96.7M
Wellington Management	2016Q1	$32.84	+78.5%	$157.2M
Renaissance Technologies	2016Q1	$32.86	+78.3%	$173.7M
Izzy Englander (Millennium Mgmt)	2016Q1	$33.81	+73.4%	$9.2M
Jeremy Grantham (GMO)	2023Q2	$34.94	+67.7%	$19.5M
D.E. Shaw & Co.	2016Q1	$36.15	+62.1%	$27.6M
AQR Capital Management	2016Q1	$36.52	+60.5%	$6.5M
Ken Griffin (Citadel Advisors)	2016Q1	$38.32	+52.9%	$610K
Ken Griffin (Citadel Advisors)	2016Q1	$38.32	+52.9%	$610K
Ken Griffin (Citadel Advisors)	2016Q1	$38.32	+52.9%	$610K

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions1

Steve Cohen (Point72)
+266,087
$10.2M

Added to4

Ken Griffin (Citadel Advisors)
+920,799
$35.4M
Wellington Management
+546,144
$21.0M
Jeremy Grantham (GMO)
+61,358
$2.4M
AQR Capital Management
+40,001
$1.5M

Trimmed5

Izzy Englander (Millennium Mgmt)
−418,217
$16.1M
Renaissance Technologies
−386,300
$14.9M
D.E. Shaw & Co.
−125,527
$4.8M
Two Sigma Investments
−3,500
$135K
T. Rowe Price
−137,621
$5K

Exited0

—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	14	9,932,724	$298.7M	—
2022Q2	12	7,450,462	$191.4M	-2
2022Q3	10	7,704,213	$199.1M	-2
2022Q4	12	7,568,744	$266.1M	+2
2023Q1	12	7,348,925	$208.9M	—
2023Q2	13	9,153,716	$274.2M	+1
2023Q3	12	7,672,781	$242.5M	-1
2023Q4	10	7,047,424	$245.0M	-2
2024Q1	12	8,332,180	$327.2M	+2
2024Q2	14	10,181,592	$310.7M	+2
2024Q3	12	13,607,744	$432.6M	-2
2024Q4	10	10,341,769	$390.8M	-2
2025Q1	11	12,272,124	$480.0M	+1
2025Q2	11	9,854,963	$368.6M	—
2025Q3	11	8,872,414	$317.4M	—
2025Q4	12	9,647,638	$371.0M	+1

Who owns TS

12 super-investors · 2025Q4

Tracked stake

9.65M

Combined value

$371M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New1Added6Trim5

#	Manager	Shares	Value	% of book	Last action
1	Renaissance Technologies	2.96M	$114M	0.2%	Trim−386.3K
2	Wellington Management	2.68M	$103M	0.0%	Added+546.1K
3	T. Rowe Price	1.65M	$63M	0.0%	Trim−137.6K
4	Ken Griffin Citadel Advisors	932.4K	$36M	0.0%	Added+920.8K
5	D.E. Shaw & Co.	471.6K	$18M	0.0%	Trim−125.5K
6	Jeremy Grantham GMO	332.2K	$13M	0.0%	Added+61.4K
7	Steve Cohen Point72	266.1K	$10M	0.0%	New+266.1K
8	Izzy Englander Millennium Mgmt	156.2K	$6M	0.0%	Trim−418.2K
9	AQR Capital Management	110.9K	$4M	0.0%	Added+40.0K
10	Ken Griffin Citadel Advisors	64.1K	$2M	0.0%	Added+920.8K
11	Ken Griffin Citadel Advisors	10.4K	$400K	0.0%	Added+920.8K
12	Two Sigma Investments	7.6K	$292K	0.0%	Trim−3.5K

Recent moves

20 transactions

ADDKen Griffin (Citadel Advisors)
+920,799 · 2025Q4
ADDAQR Capital Management
+40,001 · 2025Q4
TRIMTwo Sigma Investments
−3,500 · 2025Q4
ADDWellington Management
+546,144 · 2025Q4
NEWSteve Cohen (Point72)
+266,087 · 2025Q4
ADDJeremy Grantham (GMO)
+61,358 · 2025Q4
TRIMD.E. Shaw & Co.
−125,527 · 2025Q4
TRIMT. Rowe Price
−137,621 · 2025Q4
TRIMIzzy Englander (Millennium Mgmt)
−418,217 · 2025Q4
TRIMRenaissance Technologies
−386,300 · 2025Q4
ADDD.E. Shaw & Co.
+375,071 · 2025Q3
ADDT. Rowe Price
+89,348 · 2025Q3
TRIMIzzy Englander (Millennium Mgmt)
−202,540 · 2025Q3
TRIMTwo Sigma Investments
−46,100 · 2025Q3
ADDAQR Capital Management
+30,951 · 2025Q3
ADDWellington Management
+36,718 · 2025Q3
ADDRenaissance Technologies
+459,100 · 2025Q3
ADDJeremy Grantham (GMO)
+17,013 · 2025Q3
SOLDNorges Bank (Norway SWF)
−91,300 · 2024Q3
TRIMIzzy Englander (Millennium Mgmt)
−400,296 · 2025Q2

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