Parallax Volatility Advisers
CENX icon

Parallax Volatility Advisers’s Century Aluminum CENX Stock Holding History

Parallax Volatility Advisers’s Portfolio CENX Stock Details CENX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2017
Q2 		– Sell
-3,000
Closed -$38K – 2396
2017
Q1 		$38K Buy
+3,000
New +$39.8K ﹤0.01% 2727
2016
Q4 		– Sell
-2,000
Closed -$14K – 3107
2016
Q3 		$14K Buy
+2,000
New +$13.7K ﹤0.01% 2635
2015
Q2 		– Sell
-6,600
Closed -$91K – 3682
2015
Q1 		$91K Sell
6,600
-24,100
-79% -$485K ﹤0.01% 2583
2014
Q4 		$749K Buy
30,700
+15,400
+101% +$398K ﹤0.01% 1726
2014
Q3 		$398K Buy
+15,300
New +$337K ﹤0.01% 2005
2014
Q1 		– Sell
-500
Closed -$5K – 3385
2013
Q4 		$5K Sell
500
-2,100
-81% -$18.7K ﹤0.01% 3113
2013
Q3 		$21K Sell
2,600
-7,200
-73% -$63.7K ﹤0.01% 2245
2013
Q2 		$91K Buy
+9,800
New +$84.4K ﹤0.01% 1334

Other funds holding CENX

G
Glencore Baar, Switzerland $4.87B AUM 67.38% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
SG
Sourcerock Group Denver, Colorado $2.48B AUM 72.25% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Parallax Volatility Advisers's CENX Position: Q1 2026 in Review

Parallax Volatility Advisers sold out of Century Aluminum (CENX) in Q1 2026, closing a stake of 61,314 shares — an estimated $3.07M sold.

Parallax Volatility Advisers first reported a position in CENX in Q2 2013 and held it in 16 quarters. The position peaked at $2.4M in Q4 2025. 386 funds tracked by Wall St. Rank hold CENX as of Q1 2026.

  • Parallax Volatility Advisers reported no remaining Century Aluminum position as of Q1 2026 after selling out during the quarter.
  • Parallax Volatility Advisers sold 61,314 Century Aluminum shares in Q1 2026, an estimated $3.07M.
  • Parallax Volatility Advisers first reported a position in Century Aluminum in Q2 2013 and held it in 16 quarters.
  • Parallax Volatility Advisers's Century Aluminum position peaked at $2.4M in Q4 2025.
  • 386 funds tracked by Wall St. Rank held Century Aluminum as of Q1 2026.

Based on Parallax Volatility Advisers's 13F filing for Q1 2026, filed 15 May 2026.