Simplex Trading
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Simplex Trading’s Century Aluminum CENX Stock Holding History

Simplex Trading’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
2026
Q1 		$5.35M Buy
91,200
+5,000
+6% +$251K ﹤0.01% 1069
2025
Q4 		$3.38M Sell
86,200
-5,500
-6% -$172K ﹤0.01% 1572
2025
Q3 		$2.69M Buy
91,700
+12,100
+15% +$274K ﹤0.01% 2019
2025
Q2 		$1.43M Sell
79,600
-21,900
-22% -$372K ﹤0.01% 2417
2025
Q1 		$1.88M Buy
101,500
+18,000
+22% +$346K ﹤0.01% 2088
2024
Q4 		$1.52M Buy
83,500
+6,900
+9% +$136K ﹤0.01% 2441
2024
Q3 		$1.24M Sell
76,600
-23,900
-24% -$362K ﹤0.01% 2708
2024
Q2 		$1.68M Buy
100,500
+45,100
+81% +$768K ﹤0.01% 2367
2024
Q1 		$852K Sell
55,400
-113,600
-67% -$1.28M ﹤0.01% 3291
2023
Q4 		$2.05M Buy
169,000
+101,500
+150% +$796K ﹤0.01% 2336
2023
Q3 		$485K Buy
67,500
+7,900
+13% +$63.6K ﹤0.01% 3431
2023
Q2 		$519K Sell
59,600
-45,300
-43% -$394K ﹤0.01% 3281
2023
Q1 		$1.05M Buy
104,900
+68,500
+188% +$710K ﹤0.01% 2548
2022
Q4 		$297K Sell
36,400
-35,600
-49% -$269K ﹤0.01% 3749
2022
Q3 		$380K Sell
72,000
-74,900
-51% -$569K ﹤0.01% 3792
2022
Q2 		$1.08M Buy
146,900
+112,700
+330% +$1.75M ﹤0.01% 2531
2022
Q1 		$899K Buy
34,200
+16,800
+97% +$354K ﹤0.01% 3041
2021
Q4 		$288K Buy
17,400
+4,300
+33% +$62.9K ﹤0.01% 4630
2021
Q3 		$165K Hold
13,100
– – ﹤0.01% 5901
2021
Q2 		$168K Buy
+13,100
New +$189K ﹤0.01% 5970
2021
Q1 		– Sell
-33
Closed -$36K – 8917
2020
Q4 		$36K Sell
33
-12
-27% -$109 ﹤0.01% 6487
2020
Q3 		$32K Sell
45
-24
-35% -$209 ﹤0.01% 6004
2020
Q2 		$49K Sell
69
-117
-63% -$618 ﹤0.01% 5507
2020
Q1 		$67K Buy
186
+98
+111% +$548 ﹤0.01% 4818
2019
Q4 		$66K Sell
88
-95
-52% -$658 ﹤0.01% 4934
2019
Q3 		$121K Buy
183
+82
+81% +$543 ﹤0.01% 4112
2019
Q2 		$69K Buy
101
+74
+274% +$550 ﹤0.01% 4553
2019
Q1 		$23K Sell
27
-107
-80% -$926 ﹤0.01% 5614
2018
Q4 		$97K Buy
134
+13
+11% +$118 ﹤0.01% 3876
2018
Q3 		$144K Sell
121
-17
-12% -$219 ﹤0.01% 4027
2018
Q2 		$217K Sell
138
-104
-43% -$1.76K ﹤0.01% 3382
2018
Q1 		$5K Buy
242
+103
+74% +$2.15K ﹤0.01% 4607
2017
Q4 		$33K Sell
139
-58
-29% -$888 ﹤0.01% 2827
2017
Q3 		$30K Sell
197
-1,333
-87% -$23K ﹤0.01% 2772
2017
Q2 		$187K Buy
1,530
+1,152
+305% +$16.1K 0.01% 1239
2017
Q1 		$39K Buy
378
+22
+6% +$292 ﹤0.01% 2591
2016
Q4 		$97K Sell
356
-69
-16% -$590 0.01% 1556
2016
Q3 		$59K Buy
425
+171
+67% +$1.17K ﹤0.01% 1959
2016
Q2 		$39K Buy
254
+10
+4% +$70 ﹤0.01% 2283
2016
Q1 		$67K Sell
244
-6
-2% -$33 0.01% 1690
2015
Q4 		$31K Sell
250
-4
-2% -$17 ﹤0.01% 2309
2015
Q3 		$34K Buy
+254
New +$1.77K ﹤0.01% 2290
2015
Q2 		– Sell
-84
Closed -$1K – 5219
2015
Q1 		$1K Sell
84
-45
-35% -$906 ﹤0.01% 4412
2014
Q4 		$14K Buy
+129
New +$3.33K ﹤0.01% 2313

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

Simplex Trading's CENX Position: Q3 2025 in Review

Simplex Trading sold out of Century Aluminum (CENX) in Q3 2025, closing a stake of 4,290 shares — an estimated $97.2K sold.

Simplex Trading first reported a position in CENX in Q1 2015 and held it in 30 quarters. The position peaked at $1.13M in Q4 2017. 255 funds tracked by Wall St. Rank hold CENX as of Q3 2025.

  • Simplex Trading reported no remaining Century Aluminum position as of Q3 2025 after selling out during the quarter.
  • Simplex Trading sold 4,290 Century Aluminum shares in Q3 2025, an estimated $97.2K.
  • Simplex Trading first reported a position in Century Aluminum in Q1 2015 and held it in 30 quarters.
  • Simplex Trading's Century Aluminum position peaked at $1.13M in Q4 2017.
  • 255 funds tracked by Wall St. Rank held Century Aluminum as of Q3 2025.

Based on Simplex Trading's 13F filing for Q3 2025, filed 12 Nov 2025.