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Dmitry Balyasny’s Ciena CIEN Stock Holding History

Dmitry Balyasny’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
2021
Q3 		– Sell
-87,500
Closed -$4.98M – 1979
2021
Q2 		$4.98M Buy
+87,500
New +$4.82M 0.02% 716
2017
Q4 		– Sell
-400,000
Closed -$8.79M – 2078
2017
Q3 		$8.79M Buy
+400,000
New +$9.57M 0.03% 546

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

Dmitry Balyasny's CIEN Position: Q2 2026 in Review

Dmitry Balyasny increased its Ciena (CIEN) stake by 15% in Q2 2026, buying an estimated $25M and bringing the position to 372,449 shares worth $183M. The position accounts for 0.23% of the portfolio, ranked #92.

Dmitry Balyasny first reported a position in CIEN in Q2 2015 and has held it in 30 quarters since. 1,217 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

  • Dmitry Balyasny held 372,449 shares of Ciena worth $183M as of Q2 2026.
  • Dmitry Balyasny bought 49,030 Ciena shares in Q2 2026, an estimated $25M.
  • Ciena made up 0.23% of Dmitry Balyasny's portfolio in Q2 2026, its #92 holding.
  • Dmitry Balyasny first reported a position in Ciena in Q2 2015 and has held it in 30 quarters since.
  • 1,217 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

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