Mainstream Capital Management
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Mainstream Capital Management’s Ciena CIEN Stock Holding History

Mainstream 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
Q3 		$58.4K Buy
+166
New +$64.1K 0.03% 135

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

Mainstream Capital Management's CIEN Position: Q3 2026 in Review

Mainstream Capital Management opened a new position in Ciena (CIEN) in Q3 2026: 166 shares worth $58.4K. The stake represents 0.03% of the portfolio and ranks #135 among its holdings.

927 funds tracked by Wall St. Rank hold CIEN as of Q3 2026.

  • Mainstream Capital Management held 166 shares of Ciena worth $58.4K as of Q3 2026.
  • Ciena was a new Mainstream Capital Management position in Q3 2026.
  • Ciena made up 0.03% of Mainstream Capital Management's portfolio in Q3 2026, its #135 holding.
  • 927 funds tracked by Wall St. Rank held Ciena as of Q3 2026.

Based on Mainstream Capital Management's 13F filing for Q3 2026, filed 23 Oct 2026.