Brevan Howard Capital Management’s Ciena CIEN Stock Holding History

Brevan Howard Capital 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	$7.44M	Buy	15,174 +2,237	+17%	+$1.14M	0.06%	238
2026 Q1	$5.02M	Buy	12,937 +4,697	+57%	+$1.44M	0.04%	225
2025 Q4	$1.93M	Sell	8,240 -129,487	-94%	-$25.1M	0.02%	493
2025 Q3	$20.1M	Buy	137,727 +130,649	+1,846%	+$13.3M	0.09%	67
2025 Q2	$576K	Sell	7,078 -15,041	-68%	-$1.08M	﹤0.01%	1298
2025 Q1	$1.34M	Buy	+22,119	New	+$1.75M	0.01%	404
2024 Q3	–	Sell	-15,449	Closed	-$744K	–	1173
2024 Q2	$744K	Buy	15,449 +10,114	+190%	+$480K	0.01%	474
2024 Q1	$264K	Sell	5,335 -6,039	-53%	-$319K	﹤0.01%	701
2023 Q4	$512K	Buy	+11,374	New	+$501K	0.01%	470
2023 Q3	–	Sell	-8,809	Closed	-$374K	–	397
2023 Q2	$374K	Buy	+8,809	New	+$401K	0.01%	152

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

Brevan Howard Capital Management's CIEN Position: Q2 2026 in Review

Brevan Howard Capital Management increased its Ciena (CIEN) stake by 17% in Q2 2026, buying an estimated $1.14M and bringing the position to 15,174 shares worth $7.44M. The position accounts for 0.06% of the portfolio, ranked #238.

Brevan Howard Capital Management first reported a position in CIEN in Q2 2023 and has held it in 10 quarters since. The position peaked at $20.1M in Q3 2025. 1,219 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

Brevan Howard Capital Management held 15,174 shares of Ciena worth $7.44M as of Q2 2026.
Brevan Howard Capital Management bought 2,237 Ciena shares in Q2 2026, an estimated $1.14M.
Ciena made up 0.06% of Brevan Howard Capital Management's portfolio in Q2 2026, its #238 holding.
Brevan Howard Capital Management first reported a position in Ciena in Q2 2023 and has held it in 10 quarters since.
Brevan Howard Capital Management's Ciena position peaked at $20.1M in Q3 2025.
1,219 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

Based on Brevan Howard Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.