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Munro Partners’s Ciena CIEN Stock Holding History

Munro Partners’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 		$18.6M Sell
37,946
-177,029
-82% -$90.3M 0.41% 47
2026
Q1 		$83.5M Sell
214,975
-89,455
-29% -$27.4M 2.83% 15
2025
Q4 		$71.2M Sell
304,430
-252,500
-45% -$49M 1.85% 21
2025
Q3 		$81.1M Buy
+556,930
New +$56.7M 2.2% 23

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

Munro Partners's CIEN Position: Q2 2026 in Review

Munro Partners reduced its Ciena (CIEN) stake by 82% in Q2 2026, selling an estimated $90.3M and leaving 37,946 shares worth $18.6M. The position accounts for 0.41% of the portfolio, ranked #47.

Munro Partners first reported a position in CIEN in Q3 2025 and has held it in 4 quarters since. The position peaked at $83.5M in Q1 2026. 1,226 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

  • Munro Partners held 37,946 shares of Ciena worth $18.6M as of Q2 2026.
  • Munro Partners sold 177,029 Ciena shares in Q2 2026, an estimated $90.3M.
  • Ciena made up 0.41% of Munro Partners's portfolio in Q2 2026, its #47 holding.
  • Munro Partners first reported a position in Ciena in Q3 2025 and has held it in 4 quarters since.
  • Munro Partners's Ciena position peaked at $83.5M in Q1 2026.
  • 1,226 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

Based on Munro Partners's 13F filing for Q2 2026, filed 10 Aug 2026.