PCM
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Polymer Capital Management’s Ciena CIEN Stock Holding History

Polymer Capital Management’s Portfolio CIEN Stock Details CIEN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$3.51M Buy
7,147
+5,634
+372% +$2.87M 0.46% 36
2026
Q1 		$587K Sell
1,513
-2,260
-60% -$691K 0.06% 350
2025
Q4 		$882K Buy
3,773
+1,854
+97% +$360K 0.09% 325
2025
Q3 		$280K Sell
1,919
-5,511
-74% -$561K 0.03% 633
2025
Q2 		$604K Buy
+7,430
New +$533K 0.07% 238

Other funds holding CIEN

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

Polymer Capital Management's CIEN Position: Q2 2026 in Review

Polymer Capital Management increased its Ciena (CIEN) stake by 372% in Q2 2026, buying an estimated $2.87M and bringing the position to 7,147 shares worth $3.51M. The position accounts for 0.46% of the portfolio, ranked #36.

Polymer Capital Management first reported a position in CIEN in Q2 2025 and has held it in 5 quarters since. 1,226 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

  • Polymer Capital Management held 7,147 shares of Ciena worth $3.51M as of Q2 2026.
  • Polymer Capital Management bought 5,634 Ciena shares in Q2 2026, an estimated $2.87M.
  • Ciena made up 0.46% of Polymer Capital Management's portfolio in Q2 2026, its #36 holding.
  • Polymer Capital Management first reported a position in Ciena in Q2 2025 and has held it in 5 quarters since.
  • 1,226 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

Based on Polymer Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.