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 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	$9.62M	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 New York $5.72T AUM 30.48% 1-Year Est. Return

Bpifrance Maisons Alfort, Cedex, France $1.36B AUM 21.86% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

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 New York $240B AUM 35.51% 1-Year Est. Return

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return

Brightline Capital Management's CSTM Position: Q1 2026 in Review

Brightline Capital Management increased its Constellium (CSTM) stake by 0.27% in Q1 2026, buying an estimated $119K and bringing the position to 1,847,000 shares worth $45.4M. The position accounts for 13.43% of the portfolio, ranked #2.

Brightline Capital Management first reported a position in CSTM in Q4 2017 and has held it in 16 quarters since. 313 funds tracked by Wall St. Rank hold CSTM as of Q1 2026.

Brightline Capital Management held 1,847,000 shares of Constellium worth $45.4M as of Q1 2026.
Brightline Capital Management bought 5,000 Constellium shares in Q1 2026, an estimated $119K.
Constellium made up 13.43% of Brightline Capital Management's portfolio in Q1 2026, its #2 holding.
Brightline Capital Management first reported a position in Constellium in Q4 2017 and has held it in 16 quarters since.
313 funds tracked by Wall St. Rank held Constellium as of Q1 2026.

Based on Brightline Capital Management's 13F filing for Q1 2026, filed 15 May 2026.