CONSTELLIUM SE - Ordinary Shares, nominal value EUR0.02 per share (CSTM)

Q: What does CUSIP F21107101 represent in this 13F holders report?

CUSIP F21107101 is the security identifier for CSTM - CONSTELLIUM SE - Ordinary Shares, nominal value EUR0.02 per share used to aggregate holder disclosures.

Q: How many institutions held CSTM - CONSTELLIUM SE - Ordinary Shares, nominal value EUR0.02 per share in Q1 2021?

130 institutional investors reported CSTM - CONSTELLIUM SE - Ordinary Shares, nominal value EUR0.02 per share for Q1 2021. Use the holders table for investor-level position and value details.

CUSIP: F21107101

Q1 2021 13F Holders as of 31 Mar 2021

Security type / class: Equity / Ordinary Shares, nominal value EUR0.02 per share
Total 13F shares: 104,659,629
Total 13F value: $1,537,958,550
Share change: -274,604
Put/Call ratio: 43%
SEC-reported price per share: $14.70
Number of holders: 130
Value change: -$232,773
Number of buys: 67
Number of sells: 70
Shares outstanding: 135,546,823

Security key

F21107101

Report period

Q1 2021

Institutions

130

Top holders

CSTM full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2021 Previous quarter: Q4 2020 CONSTELLIUM SE SEC filings CONSTELLIUM SE company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP F21107101

Newer quarter: Q2 2021 Previous quarter: Q4 2020

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top reported holders of CSTM - CONSTELLIUM SE - Ordinary Shares, nominal value EUR0.02 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

PRICE T ROWE ASSOCIATES I...

Disclosed value leader

PRICE T ROWE ASSOCIATES I...

Comparable rows

15/15

Latest evidence

31 Dec 2020

13F Lead comparable stake: 13% Showing 1-6 of 15 holder rows.

Quick read

PRICE T ROWE ASSOCIATES INC /MD/ leads the comparable SEC ownership view at 13%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens PRICE T ROWE ASSOCIATES INC /MD/'s linked filing trail.

Comparable ownership Top 5

PRICE T ROWE ASSOCIATES INC /MD/ 13%

JANUS HENDERSON GROUP PLC 5.6%

OBERWEIS ASSET MANAGEMENT INC/ 4.7%

Boussard & Gavaudan Investment Ma... 4.6%

BlackRock Finance, Inc. 3.4%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
PRICE T ROWE ASSOCIATES INC /MD/	13F Company 13F	13%	$243,073,000 17,374,741 shares	—	31 Dec 2020
JANUS HENDERSON GROUP PLC	13F Company 13F	5.6%	$106,036,000 7,579,444 shares	—	31 Dec 2020
OBERWEIS ASSET MANAGEMENT INC/	13F Company 13F	4.7%	$89,267,000 6,380,797 shares	—	31 Dec 2020
Boussard & Gavaudan Investment Management LLP	13F Company 13F	4.6%	$86,847,000 6,284,176 shares	—	31 Dec 2020
BlackRock Finance, Inc.	13F Company 13F	3.4%	$63,861,000 4,564,723 shares	—	31 Dec 2020
Sachem Head Capital Management LP	13F Company 13F	2.8%	$52,602,000 3,760,000 shares	—	31 Dec 2020

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2021

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

130

104,659,629

Rows available

130

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

133

Q1 2021 holders

130

Holder diff

-3

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 value	Q1 2021 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend