Jane Street
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Jane Street’s Constellium CSTM Stock Holding History

Jane Street’s Portfolio CSTM Stock Details CSTM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$4.97M Buy
155,800
+91,800
+143% +$2.96M ﹤0.01% 3726
2026
Q1 		$1.57M Buy
+64,000
New +$1.52M ﹤0.01% 5541
2025
Q4 		– Sell
-20,500
Closed -$305K – 11301
2025
Q3 		$305K Buy
20,500
+7,900
+63% +$113K ﹤0.01% 8867
2025
Q2 		$168K Sell
12,600
-7,600
-38% -$85.4K ﹤0.01% 8671
2025
Q1 		$204K Buy
+20,200
New +$215K ﹤0.01% 8420
2024
Q3 		– Sell
-82,600
Closed -$1.56M – 9667
2024
Q2 		$1.56M Buy
+82,600
New +$1.72M ﹤0.01% 4941
2022
Q3 		– Sell
-146,900
Closed -$1.94M – 9797
2022
Q2 		$1.94M Buy
146,900
+80,000
+120% +$1.28M ﹤0.01% 4222
2022
Q1 		$1.2M Buy
66,900
+5,000
+8% +$91.2K ﹤0.01% 5748
2021
Q4 		$1.11M Sell
61,900
-78,700
-56% -$1.44M ﹤0.01% 5679
2021
Q3 		$2.64M Sell
140,600
-49,600
-26% -$955K ﹤0.01% 3912
2021
Q2 		$3.6M Buy
190,200
+138,200
+266% +$2.38M ﹤0.01% 3225
2021
Q1 		$764K Sell
52,000
-18,000
-26% -$258K ﹤0.01% 5994
2020
Q4 		$979K Buy
70,000
+19,300
+38% +$218K ﹤0.01% 4684
2020
Q3 		$398K Sell
50,700
-84,600
-63% -$699K ﹤0.01% 5496
2020
Q2 		$1.04M Buy
+135,300
New +$983K ﹤0.01% 4006
2018
Q4 		– Sell
-25,000
Closed -$309K – 5040
2018
Q3 		$309K Sell
25,000
-285,300
-92% -$3.34M ﹤0.01% 4178
2018
Q2 		$3.2M Buy
310,300
+266,200
+604% +$3.09M 0.01% 1429
2018
Q1 		$478K Buy
+44,100
New +$538K ﹤0.01% 3504

Other funds holding CSTM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
B
Bpifrance Maisons Alfort, Cedex, France $1.36B AUM 21.86% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return
KPM
Kinetic Partners Management Miami, Florida $4.19B AUM 61.52% 1-Year Est. Return

Jane Street's CSTM Position: Q2 2026 in Review

Jane Street reduced its Constellium (CSTM) stake by 82% in Q2 2026, selling an estimated $21.9M and leaving 153,549 shares worth $4.89M. The position accounts for ﹤0.01% of the portfolio, ranked #3752.

Jane Street first reported a position in CSTM in Q1 2014 and has held it in 34 quarters since. The position peaked at $20.5M in Q1 2026. 389 funds tracked by Wall St. Rank hold CSTM as of Q2 2026.

  • Jane Street held 153,549 shares of Constellium worth $4.89M as of Q2 2026.
  • Jane Street sold 678,942 Constellium shares in Q2 2026, an estimated $21.9M.
  • Constellium made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #3752 holding.
  • Jane Street first reported a position in Constellium in Q1 2014 and has held it in 34 quarters since.
  • Jane Street's Constellium position peaked at $20.5M in Q1 2026.
  • 389 funds tracked by Wall St. Rank held Constellium as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.