Brightline Capital Management
CSTM icon

Brightline Capital Management’s Constellium CSTM Stock Holding History

Brightline Capital Management’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
Q3 		$46.8M Buy
1,936,000
+13,000
+0.7% +$360K 19% 1
2026
Q2 		$61.3M Buy
1,923,000
+76,000
+4% +$2.45M 13.28% 2
2026
Q1 		$45.4M Buy
1,847,000
+5,000
+0.3% +$119K 13.43% 2
2025
Q4 		$34.7M Buy
1,842,000
+217,000
+13% +$3.6M 14.04% 3
2025
Q3 		$24.2M Buy
1,625,000
+625,000
+63% +$8.94M 9.91% 4
2025
Q2 		$13.3M Buy
1,000,000
+255,000
+34% +$2.86M 5.73% 7
2025
Q1 		$7.52M Buy
745,000
+34,000
+5% +$361K 6.52% 8
2024
Q4 		$7.3M Sell
711,000
-1,000
-0.1% -$12.3K 5.01% 8
2024
Q3 		$11.6M Buy
712,000
+1,000
+0.1% +$17K 4.89% 12
2024
Q2 		$13.4M Buy
711,000
+71,000
+11% +$1.48M 6.65% 9
2024
Q1 		$14.2M Buy
640,000
+158,000
+33% +$3.06M 8.51% 5
2023
Q4 		$9.6M Hold
482,000
– – 10.44% 5
2023
Q3 		$8.77M Buy
+482,000
New +$8.5M 35.93% 2
2019
Q4 		– Sell
-110,000
Closed -$1.4M – 12
2019
Q3 		$1.4M Buy
+110,000
New +$1.29M 1.31% 13
2018
Q4 		– Sell
-455,000
Closed -$5.62M – 3
2018
Q3 		$5.62M Hold
455,000
– – 2.32% 6
2018
Q2 		$4.69M Hold
455,000
– – 1.49% 14
2018
Q1 		$4.94M Hold
455,000
– – 1.87% 10
2017
Q4 		$5.07M Buy
+455,000
New +$4.84M 4.48% 11

Other funds holding CSTM

BlackRock
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
Bpifrance
Bpifrance Maisons Alfort, Cedex, France $1.2B AUM 41.6% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.96T AUM 27.49% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM
American Century Companies
American Century Companies Kansas City, Missouri $229B AUM 33.35% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $420B AUM 34.97% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund Toronto, Ontario, Canada $64.4B AUM 36.06% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $234B AUM 43.58% 1-Year Est. Return

Brightline Capital Management's CSTM Position: Q3 2026 in Review

Brightline Capital Management increased its Constellium (CSTM) stake by 0.68% in Q3 2026, buying an estimated $360K and bringing the position to 1,936,000 shares worth $46.8M. The position accounts for 19% of the portfolio, ranked #1.

Brightline Capital Management first reported a position in CSTM in Q4 2017 and has held it in 18 quarters since. The position peaked at $61.3M in Q2 2026. 277 funds tracked by Wall St. Rank hold CSTM as of Q3 2026.

  • Brightline Capital Management held 1,936,000 shares of Constellium worth $46.8M as of Q3 2026.
  • Brightline Capital Management bought 13,000 Constellium shares in Q3 2026, an estimated $360K.
  • Constellium made up 19% of Brightline Capital Management's portfolio in Q3 2026, its #1 holding.
  • Brightline Capital Management first reported a position in Constellium in Q4 2017 and has held it in 18 quarters since.
  • Brightline Capital Management's Constellium position peaked at $61.3M in Q2 2026.
  • 277 funds tracked by Wall St. Rank held Constellium as of Q3 2026.

Based on Brightline Capital Management's 13F filing for Q3 2026, filed 13 Nov 2026.