CENX

Century Aluminum Co

Company with tickers: CENX

CIK
949157
CUSIP
156431108
Shares Outstanding
98,974,047
Holders: 2
Total Value: $4,231,959
Total Shares: 72,107

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 2 13F filers · Δ vs Dec 31, 2025
Top Holder
100.0%
+53.1 pts
Top 5
100.0%
+35.4 pts
Top 10
100.0%
+27.1 pts
HHI
9,994
Highly concentrated +7,675

Quarterly Activity

vs Dec 31, 2025
New
1
Increased
1
Decreased
0
Sold Out
326
Unchanged
0
Holder count: -325
Institutional value: -99.9%
Shares held: -99.9%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds
Small Essential Partners LLC +1 22

Top Sellers

vs Dec 31, 2025
No qualifying movers this quarter.

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD)
Mid SEGALL BRYANT & HAMILL, LLC 72,085 $4,230,668

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD)
Mid Glencore plc 53,511,894 $2,096,596,006
Mega BlackRock, Inc. 9,484,567 $371,605,329
Mega STATE STREET CORP 4,295,711 $168,305,956
Mid Sourcerock Group LLC 3,621,984 $141,909,333
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP 2,959,083 $115,936,871
Holder Value (USD) % of 13F Shares Action
Mid SEGALL BRYANT & HAMILL, LLC $4,230,668 99.97% 72,085 View
Small Essential Partners LLC $1,291 0.03% 22 View