ION Fund Management’s Ciena CIEN Stock Holding History

ION 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	–	Sell	-27,665	Closed	-$10.7M	–	60
2026 Q1	$10.7M	Sell	27,665 -48,335	-64%	-$14.8M	1.52%	19
2025 Q4	$17.8M	Buy	+76,000	New	+$14.7M	2.07%	21

Other funds holding CIEN

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

ION Fund Management's CIEN Position: Q2 2026 in Review

ION Fund Management sold out of Ciena (CIEN) in Q2 2026, closing a stake of 27,665 shares — an estimated $10.7M sold.

ION Fund Management first reported a position in CIEN in Q4 2025 and held it in 2 quarters. The position peaked at $17.8M in Q4 2025. 1,219 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

ION Fund Management reported no remaining Ciena position as of Q2 2026 after selling out during the quarter.
ION Fund Management sold 27,665 Ciena shares in Q2 2026, an estimated $10.7M.
ION Fund Management first reported a position in Ciena in Q4 2025 and held it in 2 quarters.
ION Fund Management's Ciena position peaked at $17.8M in Q4 2025.
1,219 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

Based on ION Fund Management's 13F filing for Q2 2026, filed 14 Aug 2026.