Numerai’s Ciena CIEN Stock Holding History

Numerai’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	$282K	Sell	574 -1,680	-75%	-$857K	0.02%	657
2026 Q1	$875K	Sell	2,254 -838	-27%	-$256K	0.09%	374
2025 Q4	$723K	Buy	+3,092	New	+$600K	0.09%	321

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

Numerai's CIEN Position: Q2 2026 in Review

Numerai reduced its Ciena (CIEN) stake by 75% in Q2 2026, selling an estimated $857K and leaving 574 shares worth $282K. The position accounts for 0.02% of the portfolio, ranked #657.

Numerai first reported a position in CIEN in Q4 2025 and has held it in 3 quarters since. The position peaked at $875K in Q1 2026. 1,226 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

Numerai held 574 shares of Ciena worth $282K as of Q2 2026.
Numerai sold 1,680 Ciena shares in Q2 2026, an estimated $857K.
Ciena made up 0.02% of Numerai's portfolio in Q2 2026, its #657 holding.
Numerai first reported a position in Ciena in Q4 2025 and has held it in 3 quarters since.
Numerai's Ciena position peaked at $875K in Q1 2026.
1,226 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

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