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Shannon River Fund Management’s Ciena CIEN Stock Holding History

Shannon River 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
Q2 		$39.9M Buy
+81,298
New +$41.5M 3.56% 11
2017
Q4 		– Sell
-250,953
Closed -$5.51M – 32
2017
Q3 		$5.51M Sell
250,953
-248,045
-50% -$5.94M 1.8% 23
2017
Q2 		$12.5M Buy
498,998
+106,698
+27% +$2.56M 3.67% 12
2017
Q1 		$9.26M Buy
+392,300
New +$9.62M 3.19% 12

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

Shannon River Fund Management's CIEN Position: Q2 2026 in Review

Shannon River Fund Management opened a new position in Ciena (CIEN) in Q2 2026: 81,298 shares worth $39.9M. The stake represents 3.56% of the portfolio and ranks #11 among its holdings. This is a return to the name: Shannon River Fund Management previously reported a position in CIEN as recently as Q3 2017.

Shannon River Fund Management first reported a position in CIEN in Q1 2017 and has held it in 4 quarters since. 1,224 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

  • Shannon River Fund Management held 81,298 shares of Ciena worth $39.9M as of Q2 2026.
  • Ciena was a new Shannon River Fund Management position in Q2 2026.
  • Ciena made up 3.56% of Shannon River Fund Management's portfolio in Q2 2026, its #11 holding.
  • Shannon River Fund Management first reported a position in Ciena in Q1 2017 and has held it in 4 quarters since.
  • 1,224 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

Based on Shannon River Fund Management's 13F filing for Q2 2026, filed 13 Aug 2026.