SEB Asset Management
CIEN icon

SEB Asset Management’s Ciena CIEN Stock Holding History

SEB Asset 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
Q3 		$13.1M Sell
37,313
-4,209
-10% -$1.62M 0.05% 285
2026
Q2 		$20.4M Buy
41,522
+4,043
+11% +$2.06M 0.08% 217
2026
Q1 		$14.6M Buy
+37,479
New +$11.5M 0.06% 256

Other funds holding CIEN

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
BlackRock
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.84T AUM 33.86% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.27T AUM 50.62% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $229B AUM 33.35% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $704B AUM 26.74% 1-Year Est. Return

SEB Asset Management's CIEN Position: Q3 2026 in Review

SEB Asset Management reduced its Ciena (CIEN) stake by 10% in Q3 2026, selling an estimated $1.62M and leaving 37,313 shares worth $13.1M. The position accounts for 0.05% of the portfolio, ranked #285.

SEB Asset Management first reported a position in CIEN in Q1 2026 and has held it in 3 quarters since. The position peaked at $20.4M in Q2 2026. 927 funds tracked by Wall St. Rank hold CIEN as of Q3 2026.

  • SEB Asset Management held 37,313 shares of Ciena worth $13.1M as of Q3 2026.
  • SEB Asset Management sold 4,209 Ciena shares in Q3 2026, an estimated $1.62M.
  • Ciena made up 0.05% of SEB Asset Management's portfolio in Q3 2026, its #285 holding.
  • SEB Asset Management first reported a position in Ciena in Q1 2026 and has held it in 3 quarters since.
  • SEB Asset Management's Ciena position peaked at $20.4M in Q2 2026.
  • 927 funds tracked by Wall St. Rank held Ciena as of Q3 2026.

Based on SEB Asset Management's 13F filing for Q3 2026, filed 4 Nov 2026.