Question 1

How many shares of CIEN does ARROWSTREET CAPITAL, LIMITED PARTNERSHIP own?

Accepted Answer

As of 2026-Q2, ARROWSTREET CAPITAL, LIMITED PARTNERSHIP holds 1.7M shares of CIEN (CIENA CORP).

Question 2

What is ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's CIEN position worth?

Accepted Answer

As of 2026-Q2, ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's CIEN position is worth $822.7M.

Question 3

Is ARROWSTREET CAPITAL, LIMITED PARTNERSHIP buying or selling CIEN?

Accepted Answer

In 2026-Q2, ARROWSTREET CAPITAL, LIMITED PARTNERSHIP increased their CIEN position (+20.8% change in shares).

Question 4

When did ARROWSTREET CAPITAL, LIMITED PARTNERSHIP first buy CIEN?

Accepted Answer

Based on available 13F filings, ARROWSTREET CAPITAL, LIMITED PARTNERSHIP first reported a position in CIEN in 2018-Q4. They have held the position across 26 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	1.7M	+20.8%	$822.7M	0.4%	$490.56	45
2026-Q1	Decreased	1.4M	-37.9%	$539M	0.3%	$333.07	0
2025-Q4	Increased	2.2M	+95.5%	$523.1M	0.3%	$238.36	60
2025-Q3	Increased	1.1M	+2174.2%	$166.6M	0.1%	$144.12	59
2025-Q2	Decreased	50,298	-75.0%	$4.1M	0.0%	$82.12	0
2025-Q1	Decreased	201,367	-62.0%	$12.2M	0.0%	$61.56	0
2024-Q4	Increased	529,555	+4484.1%	$44.9M	0.0%	$85.01	47
2024-Q3	Decreased	11,552	-89.6%	$711,488	0.0%	$61.81	0
2024-Q2	Increased	111,414	+462.9%	$5.4M	0.0%	$48.18	44
2024-Q1	Increased	19,794	+24.5%	$979,000	0.0%	$49.45	31
2023-Q4	New	15,895	-	$715,000	0.0%	$45.01	34
2023-Q1	Exited	0	-100.0%	$0	0.0%	$51.95	0
2022-Q4	New	10,599	-	$540,000	0.0%	$50.98	34
2022-Q1	Exited	0	-100.0%	$0	0.0%	$61.36	0
2021-Q4	New	8,650	-	$666,000	0.0%	$76.90	34
2021-Q2	Exited	0	-100.0%	$0	0.0%	$57.32	0
2021-Q1	Decreased	30,149	-97.3%	$1.7M	0.0%	$54.71	0
2020-Q4	Increased	1.1M	+101.3%	$59.1M	0.1%	$52.49	48
2020-Q3	Increased	555,342	+15.5%	$22M	0.0%	$39.99	33
2020-Q2	Increased	480,719	+1445.7%	$26M	0.0%	$53.15	46
2020-Q1	Decreased	31,100	-98.5%	$1.2M	0.0%	$41.08	0
2019-Q4	Increased	2.1M	+43.1%	$89.4M	0.2%	$42.64	48
2019-Q3	Decreased	1.5M	-13.8%	$57.4M	0.1%	$39.34	0
2019-Q2	Decreased	1.7M	-4.4%	$69.8M	0.2%	$41.13	0
2019-Q1	Increased	1.8M	+87.7%	$66.3M	0.2%	$37.34	55
2018-Q4	New	945,769	-	$32.1M	0.1%	$33.10	40

CIEN26 quarters

CIEN
26 quarters