GF Fund Management
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GF Fund Management’s Ciena CIEN Stock Holding History

GF Fund 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 		– Sell
-23,000
Closed -$11.3M – 623
2026
Q2 		$11.3M Sell
23,000
-84,979
-79% -$43.3M 0.14% 96
2026
Q1 		$41.9M Sell
107,979
-84,001
-44% -$25.7M 0.7% 32
2025
Q4 		$44.9M Buy
191,980
+77,425
+68% +$15M 0.77% 26
2025
Q3 		$16.7M Buy
+114,555
New +$11.7M 0.3% 62

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Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $83.2B AUM 35.34% 1-Year Est. Return
Assenagon Asset Management
Assenagon Asset Management Senningerberg, Luxembourg $103B AUM 40.17% 1-Year Est. Return
AHT
Amanah Holdings Trust London $1.79B AUM 618.88% 1-Year Est. Return
North Growth Management
North Growth Management Vancouver, British Columbia, Canada $743M AUM 74.29% 1-Year Est. Return
New York State Teachers Retirement System (NYSTRS)
New York State Teachers Retirement System (NYSTRS) Albany, New York $52.9B AUM 36.03% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $118B AUM 40.52% 1-Year Est. Return
MLCM
M & L Capital Management London, United Kingdom $482M AUM 107.4% 1-Year Est. Return
J. Safra Sarasin Holding
J. Safra Sarasin Holding $7.05B AUM 26.14% 1-Year Est. Return
DekaBank Deutsche Girozentrale
DekaBank Deutsche Girozentrale Frankfurt, Germany $87.8B AUM 20.94% 1-Year Est. Return

GF Fund Management's CIEN Position: Q3 2026 in Review

GF Fund Management sold out of Ciena (CIEN) in Q3 2026, closing a stake of 23,000 shares — an estimated $11.3M sold.

GF Fund Management first reported a position in CIEN in Q3 2025 and held it in 4 quarters. The position peaked at $44.9M in Q4 2025. 299 funds tracked by Wall St. Rank hold CIEN as of Q3 2026.

  • GF Fund Management reported no remaining Ciena position as of Q3 2026 after selling out during the quarter.
  • GF Fund Management sold 23,000 Ciena shares in Q3 2026, an estimated $11.3M.
  • GF Fund Management first reported a position in Ciena in Q3 2025 and held it in 4 quarters.
  • GF Fund Management's Ciena position peaked at $44.9M in Q4 2025.
  • 299 funds tracked by Wall St. Rank held Ciena as of Q3 2026.

Based on GF Fund Management's 13F filing for Q3 2026, filed 26 Oct 2026.