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
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 $5.72T AUM 30.48% 1-Year Est. Return
B
Bpifrance Maisons Alfort, Cedex, France $1.36B AUM 21.86% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return

Jane Street's CSTM Position: Q1 2026 in Review

Jane Street increased its Constellium (CSTM) stake by 165% in Q1 2026, buying an estimated $12.3M and bringing the position to 832,491 shares worth $20.5M. The position accounts for ﹤0.01% of the portfolio, ranked #1766.

Jane Street first reported a position in CSTM in Q1 2014 and has held it in 33 quarters since. 313 funds tracked by Wall St. Rank hold CSTM as of Q1 2026.

  • Jane Street held 832,491 shares of Constellium worth $20.5M as of Q1 2026.
  • Jane Street bought 518,759 Constellium shares in Q1 2026, an estimated $12.3M.
  • Constellium made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #1766 holding.
  • Jane Street first reported a position in Constellium in Q1 2014 and has held it in 33 quarters since.
  • 313 funds tracked by Wall St. Rank held Constellium as of Q1 2026.

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