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Mangrove Partners’s Constellium CSTM Stock Holding History

Mangrove Partners’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 		$666K Buy
20,907
+8,823
+73% +$285K 0.04% 175
2026
Q1 		$297K Hold
12,084
– – 0.02% 259
2025
Q4 		$228K Buy
+12,084
New +$201K 0.02% 271

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

Mangrove Partners's CSTM Position: Q2 2026 in Review

Mangrove Partners increased its Constellium (CSTM) stake by 73% in Q2 2026, buying an estimated $285K and bringing the position to 20,907 shares worth $666K. The position accounts for 0.04% of the portfolio, ranked #175.

Mangrove Partners first reported a position in CSTM in Q4 2025 and has held it in 3 quarters since. 388 funds tracked by Wall St. Rank hold CSTM as of Q2 2026.

  • Mangrove Partners held 20,907 shares of Constellium worth $666K as of Q2 2026.
  • Mangrove Partners bought 8,823 Constellium shares in Q2 2026, an estimated $285K.
  • Constellium made up 0.04% of Mangrove Partners's portfolio in Q2 2026, its #175 holding.
  • Mangrove Partners first reported a position in Constellium in Q4 2025 and has held it in 3 quarters since.
  • 388 funds tracked by Wall St. Rank held Constellium as of Q2 2026.

Based on Mangrove Partners's 13F filing for Q2 2026, filed 14 Aug 2026.