Jane Street’s Tenaris TS Stock Holding History

Jane Street’s Portfolio TS Stock Details TS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$1.9M	Buy	32,600 +12,100	+59%	+$596K	﹤0.01%	5197
2025 Q4	$788K	Buy	+20,500	New	+$790K	﹤0.01%	6653
2025 Q2	–	Sell	-11,000	Closed	-$430K	–	10915
2025 Q1	$430K	Buy	+11,000	New	+$422K	﹤0.01%	7147
2023 Q3	–	Sell	-14,100	Closed	-$422K	–	9408
2023 Q2	$422K	Buy	14,100 +5,500	+64%	+$153K	﹤0.01%	6576
2023 Q1	$244K	Buy	+8,600	New	+$283K	﹤0.01%	7522
2022 Q1	–	Sell	-33,100	Closed	-$694K	–	11031
2021 Q4	$694K	Sell	33,100 -27,200	-45%	-$595K	﹤0.01%	6650
2021 Q3	$1.27M	Buy	60,300 +36,900	+158%	+$749K	﹤0.01%	5428
2021 Q2	$510K	Buy	23,400 +7,900	+51%	+$179K	﹤0.01%	7196
2021 Q1	$349K	Buy	+15,500	New	+$296K	﹤0.01%	7451
2017 Q4	–	Sell	-8,900	Closed	-$252K	–	5193
2017 Q3	$252K	Buy	+8,900	New	+$260K	﹤0.01%	3887

Other funds holding TS

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

WGI

Westwood Global Investments Boston, Massachusetts $2.68B AUM 76.4% 1-Year Est. Return

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

VanEck Associates New York $133B AUM 72.99% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

DCM

Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return

Jane Street's TS Position: Q1 2026 in Review

Jane Street opened a new position in Tenaris (TS) in Q1 2026: 100,838 shares worth $5.87M. The stake represents ﹤0.01% of the portfolio and ranks #3277 among its holdings. This is a return to the name: Jane Street previously reported a position in TS as recently as Q3 2025.

Jane Street first reported a position in TS in Q3 2013 and has held it in 42 quarters since. The position peaked at $34.4M in Q4 2015. 263 funds tracked by Wall St. Rank hold TS as of Q1 2026.

Jane Street held 100,838 shares of Tenaris worth $5.87M as of Q1 2026.
Tenaris was a new Jane Street position in Q1 2026.
Tenaris made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #3277 holding.
Jane Street first reported a position in Tenaris in Q3 2013 and has held it in 42 quarters since.
Jane Street's Tenaris position peaked at $34.4M in Q4 2015.
263 funds tracked by Wall St. Rank held Tenaris as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.