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ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

Position in CIEN — Ciena Corp

CIK 1164508 BOSTON, MA

Position in CIEN

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$822,683,346
+$283,634,921 QoQ
Shares Held
1,677,029
+20.8% QoQ
Ownership
1.18%
of shares outstanding
% of Portfolio
0.37%
of 13F equity value
Holder Rank
#14
of 1,225 holders
Holding Since
Mar 2020
18 quarters on record
Voting authority Sole 90% Shared 0% None 10%

Common Shares in CIEN Over Time

Shares Held

Position Value (USD)

Position in Communication Equipment

Technology · as of Jun 30, 2026

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP holds $5,959,537,033 across 23 Communication Equipment names. CIEN ranks #3 (13.8% of the industry book) .

# Ticker Company Shares Value (USD) Open
3 CIEN
Ciena Corp
This page
1,677,029 $822,683,346

All Filings in CIEN

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18 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $822,683,346 1,677,029
2026-03-31 $539,048,425 1,388,477
2025-12-31 $523,128,601 2,236,835
2025-09-30 $166,625,357 1,143,855
2025-06-30 $4,090,736 50,298
2025-03-31 $12,168,607 201,367
2024-12-31 $44,911,559 529,555
2024-09-30 $711,487 11,552
2024-06-30 $5,367,926 111,414
2024-03-31 $978,813 19,794
2023-12-31 $715,433 15,895
2022-12-31 $540,337 10,599
2021-12-31 $665,790 8,650
2021-03-31 $1,649,753 30,149
2020-12-31 $59,094,438 1,118,154
2020-09-30 $22,041,523 555,342
2020-06-30 $26,035,741 480,719
2020-03-31 $1,238,091 31,100