John Overdeck’s Ciena CIEN Stock Holding History

John Overdeck’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	$4.17M	Buy	8,500 +7,500	+750%	+$3.82M	﹤0.01%	2305
2026 Q1	$388K	Buy	+1,000	New	+$306K	﹤0.01%	3895
2021 Q4	–	Sell	-19,600	Closed	-$1.01M	–	4344
2021 Q3	$1.01M	Buy	+19,600	New	+$1.09M	﹤0.01%	2616
2021 Q1	–	Sell	-31,100	Closed	-$1.64M	–	3858
2020 Q4	$1.64M	Buy	31,100 +21,100	+211%	+$938K	﹤0.01%	1618
2020 Q3	$397K	Buy	10,000 +1,100	+12%	+$57.9K	﹤0.01%	2402
2020 Q2	$482K	Sell	8,900 -11,600	-57%	-$577K	﹤0.01%	2019
2020 Q1	$816K	Buy	+20,500	New	+$841K	0.01%	1572
2019 Q4	–	Sell	-7,800	Closed	-$306K	–	3674
2019 Q3	$306K	Buy	7,800 +2,300	+42%	+$96.4K	﹤0.01%	2949
2019 Q2	$226K	Buy	+5,500	New	+$212K	﹤0.01%	3028
2018 Q3	–	Sell	-25,200	Closed	-$668K	–	3214
2018 Q2	$668K	Buy	+25,200	New	+$640K	﹤0.01%	2440
2017 Q4	–	Sell	-15,400	Closed	-$338K	–	3121
2017 Q3	$338K	Buy	+15,400	New	+$369K	﹤0.01%	2357
2017 Q2	–	Sell	-19,500	Closed	-$460K	–	2993
2017 Q1	$460K	Sell	19,500 -1,500	-7%	-$36.8K	﹤0.01%	2384
2016 Q4	$513K	Buy	+21,000	New	+$459K	﹤0.01%	2498

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

John Overdeck's CIEN Position: Q2 2026 in Review

John Overdeck increased its Ciena (CIEN) stake by 173% in Q2 2026, buying an estimated $3.07M and bringing the position to 9,500 shares worth $4.66M. The position accounts for ﹤0.01% of the portfolio, ranked #2212.

John Overdeck first reported a position in CIEN in Q2 2013 and has held it in 30 quarters since. The position peaked at $28.1M in Q1 2025. 1,217 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

John Overdeck held 9,500 shares of Ciena worth $4.66M as of Q2 2026.
John Overdeck bought 6,014 Ciena shares in Q2 2026, an estimated $3.07M.
Ciena made up ﹤0.01% of John Overdeck's portfolio in Q2 2026, its #2212 holding.
John Overdeck first reported a position in Ciena in Q2 2013 and has held it in 30 quarters since.
John Overdeck's Ciena position peaked at $28.1M in Q1 2025.
1,217 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.