Dmitry Balyasny’s Ciena CIEN Stock Holding History

Dmitry Balyasny’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	$294K	Buy	+600	New	+$306K	﹤0.01%	2714
2018 Q4	–	Sell	-100,000	Closed	-$3.04M	–	1440
2018 Q3	$3.04M	Sell	100,000 -100,000	-50%	-$2.8M	0.01%	857
2018 Q2	$5.3M	Sell	200,000 -125,000	-38%	-$3.17M	0.02%	645
2018 Q1	$8.42M	Buy	325,000 +154,300	+90%	+$3.63M	0.04%	573
2017 Q4	$3.57M	Buy	+170,700	New	+$3.62M	0.01%	961
2017 Q1	–	Sell	-94,800	Closed	-$2.31M	–	1606
2016 Q4	$2.31M	Sell	94,800 -31,242	-25%	-$683K	0.01%	858
2016 Q3	$43K	Buy	+126,042	New	+$2.63M	﹤0.01%	952
2016 Q2	–	Sell	-211,100	Closed	-$4.01M	–	1193
2016 Q1	$4.01M	Buy	+211,100	New	+$3.9M	0.02%	587
2015 Q4	–	Sell	-250,000	Closed	-$5.18M	–	1255
2015 Q3	$5.18M	Buy	+250,000	New	+$5.81M	0.04%	515

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

Dmitry Balyasny's CIEN Position: Q2 2026 in Review

Dmitry Balyasny increased its Ciena (CIEN) stake by 15% in Q2 2026, buying an estimated $25M and bringing the position to 372,449 shares worth $183M. The position accounts for 0.23% of the portfolio, ranked #92.

Dmitry Balyasny first reported a position in CIEN in Q2 2015 and has held it in 30 quarters since. 1,217 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

Dmitry Balyasny held 372,449 shares of Ciena worth $183M as of Q2 2026.
Dmitry Balyasny bought 49,030 Ciena shares in Q2 2026, an estimated $25M.
Ciena made up 0.23% of Dmitry Balyasny's portfolio in Q2 2026, its #92 holding.
Dmitry Balyasny first reported a position in Ciena in Q2 2015 and has held it in 30 quarters since.
1,217 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

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