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Marex Group’s Ciena CIEN Stock Holding History

Marex Group’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 		$7.44M Buy
15,164
+13,949
+1,148% +$7.11M 0.03% 205
2026
Q1 		$472K Buy
+1,215
New +$372K ﹤0.01% 638
2025
Q3 		– Sell
-5,342
Closed -$434K – 877
2025
Q2 		$434K Buy
5,342
+911
+21% +$65.3K ﹤0.01% 390
2025
Q1 		$268K Buy
+4,431
New +$350K 0.01% 491
2024
Q3 		– Sell
-4,484
Closed -$216K – 654
2024
Q2 		$216K Buy
+4,484
New +$213K 0.01% 487

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

Marex Group's CIEN Position: Q2 2026 in Review

Marex Group increased its Ciena (CIEN) stake by 1,148% in Q2 2026, buying an estimated $7.11M and bringing the position to 15,164 shares worth $7.44M. The position accounts for 0.03% of the portfolio, ranked #205.

Marex Group first reported a position in CIEN in Q2 2024 and has held it in 5 quarters since. 1,226 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

  • Marex Group held 15,164 shares of Ciena worth $7.44M as of Q2 2026.
  • Marex Group bought 13,949 Ciena shares in Q2 2026, an estimated $7.11M.
  • Ciena made up 0.03% of Marex Group's portfolio in Q2 2026, its #205 holding.
  • Marex Group first reported a position in Ciena in Q2 2024 and has held it in 5 quarters since.
  • 1,226 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

Based on Marex Group's 13F filing for Q2 2026, filed 14 Aug 2026.