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Magnetar Financial’s Constellium CSTM Stock Holding History

Magnetar Financial’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 		$674K Buy
21,164
+10,467
+98% +$338K 0.01% 545
2026
Q1 		$263K Buy
+10,697
New +$255K ﹤0.01% 788
2025
Q3 		– Sell
-12,615
Closed -$168K – 948
2025
Q2 		$168K Buy
+12,615
New +$142K ﹤0.01% 818
2018
Q3 		– Sell
-15,117
Closed -$156K – 548
2018
Q2 		$156K Buy
+15,117
New +$176K ﹤0.01% 467

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

Magnetar Financial's CSTM Position: Q2 2026 in Review

Magnetar Financial increased its Constellium (CSTM) stake by 98% in Q2 2026, buying an estimated $338K and bringing the position to 21,164 shares worth $674K. The position accounts for 0.01% of the portfolio, ranked #545.

Magnetar Financial first reported a position in CSTM in Q2 2018 and has held it in 4 quarters since. 388 funds tracked by Wall St. Rank hold CSTM as of Q2 2026.

  • Magnetar Financial held 21,164 shares of Constellium worth $674K as of Q2 2026.
  • Magnetar Financial bought 10,467 Constellium shares in Q2 2026, an estimated $338K.
  • Constellium made up 0.01% of Magnetar Financial's portfolio in Q2 2026, its #545 holding.
  • Magnetar Financial first reported a position in Constellium in Q2 2018 and has held it in 4 quarters since.
  • 388 funds tracked by Wall St. Rank held Constellium as of Q2 2026.

Based on Magnetar Financial's 13F filing for Q2 2026, filed 14 Aug 2026.