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Constellium
CSTM

237 hedge funds and large institutions have $1.91B invested in Constellium in 2025 Q3 according to their latest regulatory filings, with 38 funds opening new positions, 104 increasing their positions, 66 reducing their positions, and 23 closing their positions.

New
Increased
Maintained
Reduced
Closed

135% more call options, than puts

Call options by funds: $15.9M | Put options by funds: $6.77M

65% more first-time investments, than exits

New positions opened: 38 | Existing positions closed: 23

58% more repeat investments, than reductions

Existing positions increased: 104 | Existing positions reduced: 66

9% more capital invested

Capital invested by funds: $1.76B → $1.91B (+$150M)

6% more funds holding

Funds holding: 224 → 237 (+13)

0% more funds holding in top 10

Funds holding in top 10: 9 → 9 (0)

0.6% less ownership

Funds ownership: 92.69% → 92.09% (-0.6%)

Holders
237
Holders Change
+13
Holders Change %
+5.8%
% of All Funds
3.11%
Holding in Top 10
9
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.12%
New
38
Increased
104
Reduced
66
Closed
23
Calls
$15.9M
Puts
$6.77M
Net Calls
+$9.16M
Net Calls Change
-$4.23M

Top Buyers

1
Millennium Management
Millennium Management
New York
+$25.9M
2
Vanguard Group
Vanguard Group
Pennsylvania
+$13.4M
3
Morgan Stanley
Morgan Stanley
New York
+$13M
4
AQR Capital Management
AQR Capital Management
Connecticut
+$12.8M
5
N
Nuveen
North Carolina
+$10.1M

Top Sellers

1
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
-$132M
2
ECA
Encompass Capital Advisors
New York
-$15.7M
3
Thrivent Financial for Lutherans
Thrivent Financial for Lutherans
Minnesota
-$9.51M
4
Point72 Asset Management
Point72 Asset Management
Connecticut
-$8.3M
5
Janus Henderson Group
Janus Henderson Group
United Kingdom
-$6.88M
Name Holding Trade Value Shares
Change 		Change in
Stake
QC
251
Quadrature Capital
United Kingdom
– -$212K -15,964 Closed
I
252
InceptionR
California
– -$195K -14,686 Closed
NWAG
253
Net Worth Advisory Group
Utah
– -$186K -13,949 Closed
MF
254
Magnetar Financial
Illinois
– -$168K -12,615 Closed
FC
255
Farringdon Capital
United Kingdom
– -$163K -12,230 Closed
BP
256
Ballentine Partners
Massachusetts
– -$149K -11,174 Closed
VF
257
Virtu Financial
New York
– -$145K -10,888 Closed
CIAM
258
Caitong International Asset Management
Hong Kong
– -$1.29K -97 Closed
BIG
259
Brooklyn Investment Group
New York
– -$80 -6 Closed
FIA
260
FNY Investment Advisers
New York
– +$14 +1 +8%
7 8 9 10
11

CSTM Hedge Fund Activity: Q3 2025 in Review

237 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Constellium (CSTM) for Q3 2025, worth a combined $1.91B — up 8.5% from $1.76B a quarter earlier.

Buyers outnumbered sellers: 38 funds opened new CSTM positions and 23 closed out — a net gain of 15 holders — while 104 added to existing stakes and 66 trimmed.

The largest buyer was Millennium Management, adding an estimated $25.9M. The largest seller was T. Rowe Price Investment Management, cutting an estimated $132M.

  • 237 institutional investors held Constellium (CSTM) as of Q3 2025, up from 224 in Q2 2025.
  • Funds reported $1.91B of Constellium stock for Q3 2025, up 8.5% quarter-over-quarter.
  • 38 funds opened new Constellium positions in Q3 2025 and 23 closed out, a net change of +15 holders.
  • The largest Constellium buyer in Q3 2025 was Millennium Management, an estimated $25.9M added.
  • The largest Constellium seller in Q3 2025 was T. Rowe Price Investment Management, an estimated $132M sold.

Based on aggregated 13F filings for Q3 2025.