Massachusetts Financial Services
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Massachusetts Financial Services’s Century Aluminum CENX Stock Holding History

Massachusetts Financial Services’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
Q2 		$22.3M Buy
456,244
+443,747
+3,551% +$26.7M 0.01% 646
2026
Q1 		$733K Buy
+12,497
New +$627K ﹤0.01% 865
2015
Q3 		– Sell
-29,391
Closed -$307K – 867
2015
Q2 		$307K Sell
29,391
-526
-2% -$6.7K ﹤0.01% 856
2015
Q1 		$413K Buy
29,917
+873
+3% +$17.6K ﹤0.01% 846
2014
Q4 		$709K Sell
29,044
-1,016,118
-97% -$26.2M ﹤0.01% 820
2014
Q3 		$27.1M Sell
1,045,162
-1,477,449
-59% -$32.5M 0.01% 469
2014
Q2 		$39.6M Sell
2,522,611
-113,439
-4% -$1.61M 0.02% 393
2014
Q1 		$34.8M Sell
2,636,050
-156,000
-6% -$1.81M 0.02% 408
2013
Q4 		$29.2M Sell
2,792,050
-17,850
-0.6% -$159K 0.02% 429
2013
Q3 		$22.6M Buy
2,809,900
+179,560
+7% +$1.59M 0.01% 451
2013
Q2 		$24.4M Buy
+2,630,340
New +$22.6M 0.02% 422

Other funds holding CENX

G
Glencore Baar, Switzerland $4.87B AUM 67.38% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
SG
Sourcerock Group Denver, Colorado $1.92B AUM 45.54% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Massachusetts Financial Services's CENX Position: Q2 2026 in Review

Massachusetts Financial Services increased its Century Aluminum (CENX) stake by 3,551% in Q2 2026, buying an estimated $26.7M and bringing the position to 456,244 shares worth $22.3M. The position accounts for 0.01% of the portfolio, ranked #646.

Massachusetts Financial Services first reported a position in CENX in Q2 2013 and has held it in 11 quarters since. The position peaked at $39.6M in Q2 2014. 415 funds tracked by Wall St. Rank hold CENX as of Q2 2026.

  • Massachusetts Financial Services held 456,244 shares of Century Aluminum worth $22.3M as of Q2 2026.
  • Massachusetts Financial Services bought 443,747 Century Aluminum shares in Q2 2026, an estimated $26.7M.
  • Century Aluminum made up 0.01% of Massachusetts Financial Services's portfolio in Q2 2026, its #646 holding.
  • Massachusetts Financial Services first reported a position in Century Aluminum in Q2 2013 and has held it in 11 quarters since.
  • Massachusetts Financial Services's Century Aluminum position peaked at $39.6M in Q2 2014.
  • 415 funds tracked by Wall St. Rank held Century Aluminum as of Q2 2026.

Based on Massachusetts Financial Services's 13F filing for Q2 2026, filed 3 Aug 2026.