Ciena Corporation
DE ˙ XTRA ˙ US1717793095
439,50 € ↓ -6,50 (-1,46%)
2026-06-05
DEL PRIS
SecurityDE:CIE1 / Ciena Corporation
InstitutionState Street Corp
Latest Disclosed Ownership6,309,050 shares
Latest Disclosed Value $ 2,449,362,482
State Street Corp reports 23.65% increase in ownership of CIE1 / Ciena Corporation

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 6,309,050 shares of Ciena Corporation (DE:CIE1) valued at $2,009,432,425 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 5,102,409 shares of Ciena Corporation. This represents a change in shares of 23.65% during the quarter. The current value of the position is $2,772,827,475 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F CIENA COM NEW 171779309 6,309,050 1,206,641 23.65 2,449,362 105.26 0.0846
2026-02-13 2025-12-31 13F CIENA COM NEW 171779309 5,102,409 750,128 17.24 1,193,300 88.22 0.0400
2025-11-14 2025-09-30 13F CIENA COM NEW 171779309 4,352,281 -102,706 -2.31 633,997 74.98 0.0220
2025-08-14 2025-06-30 13F CIENA COM NEW 171779309 4,454,987 -109,666 -2.40 362,324 31.35 0.0136
2025-05-15 2025-03-31 13F CIENA COM NEW 171779309 4,564,653 -19,616 -0.43 275,842 -29.05 0.0114
2025-02-14 2024-12-31 13F CIENA COM NEW 171779309 4,584,269 144,791 3.26 388,792 42.19 0.0153
2024-11-14 2024-09-30 13F CIENA COM NEW 171779309 4,439,478 53,078 1.21 273,427 29.38 0.0111
2024-08-14 2024-06-30 13F CIENA COM NEW 171779309 4,386,400 -1,569 -0.04 211,337 -2.60 0.0092
2024-05-15 2024-03-31 13F CIENA COM NEW 171779309 4,387,969 43,615 1.00 216,985 10.97 0.0097
2024-02-14 2023-12-31 13F CIENA COM NEW 171779309 4,344,354 92,850 2.18 195,539 -2.68 0.0095
2023-11-14 2023-09-30 13F CIENA COM NEW 171779309 4,251,504 12,000 0.28 200,926 11.54 0.0111
2023-08-14 2023-06-30 13F CIENA COM NEW 171779309 4,239,504 -22,741 -0.53 180,137 -19.53 0.0095
2023-05-15 2023-03-31 13F CIENA COM NEW 171779309 4,262,245 31,333 0.74 223,853 3.78 0.0126
2023-05-15 2022-12-31 13F/A-99 CIENA COM NEW 171779309 4,230,912 84,294 2.03 215,692 28.66 0.0127
2023-05-15 2022-12-31 13F CIENA COM NEW 171779309 4,230,912 84,294 215,692 0.0127
2022-11-15 2022-09-30 13F CIENA COM NEW 171779309 4,146,618 12,493 0.30 167,648 -11.26 0.0106
2022-08-15 2022-06-30 13F CIENA COM NEW 171779309 4,134,125 -84,155 -2.00 188,930 -26.13 0.0113
2022-05-16 2022-03-31 13F CIENA COM NEW 171779309 4,218,280 160,100 3.95 255,754 -18.12 0.0126
2022-02-14 2021-12-31 13F CIENA COM NEW 171779309 4,058,180 92,379 2.33 312,358 53.38 0.0148
2021-11-15 2021-09-30 13F CIENA COM NEW 171779309 3,965,801 -26,482 -0.66 203,644 -10.34 0.0108
2021-08-16 2021-06-30 13F CIENA COM NEW 171779309 3,992,283 290,606 7.85 227,121 12.13 0.0120
2021-07-09 2021-03-31 13F/A-1 CIENA COM NEW 171779309 3,701,677 43,575 1.19 202,556 4.77 0.0116
2021-05-17 2021-03-31 13F CIENA COM NEW 171779309 3,701,677 43,575 202,556 0.0116
2021-02-16 2020-12-31 13F CIENA COM NEW 171779309 3,658,102 15,146 0.42 193,331 33.71 0.0118
2020-11-10 2020-09-30 13F CIENA COM NEW 171779309 3,642,956 -183,121 -4.79 144,589 -30.22 0.0099
2020-08-14 2020-06-30 13F CIENA COM NEW 171779309 3,826,077 42,623 1.13 207,220 37.58 0.0151
2020-06-19 2020-03-31 13F/A-1 CIENA COM NEW 171779309 3,783,454 96,321 2.61 150,619 -4.31 0.0132
2020-05-11 2020-03-31 13F CIENA COM NEW 171779309 3,783,454 96,321 150,619 13,227.3810
2020-02-06 2019-12-31 13F CIENA COM NEW 171779309 3,687,133 -84,608 -2.24 157,404 6.38 0.0108
2019-11-14 2019-09-30 13F CIENA COM NEW 171779309 3,771,741 215,427 6.06 147,965 1.16 0.0110
2019-08-14 2019-06-30 13F CIENA COM NEW 171779309 3,556,314 -1,068,041 -23.10 146,271 -15.29 0.0109
2019-05-15 2019-03-31 13F CIENA COM NEW 171779309 4,624,355 102,207 2.26 172,673 12.60 0.0135
2019-02-12 2018-12-31 13F CIENA COM NEW 171779309 4,522,148 -302,406 -6.27 153,346 1.74 0.0140
2018-11-09 2018-09-30 13F CIENA Common equity shares 171779309 4,824,554 32,827 0.69 150,722 18.65 0.0116
2018-08-14 2018-06-30 13F CIENA Common equity shares 171779309 4,791,727 -40,731 -0.84 127,026 1.49 0.0106
2018-05-15 2018-03-31 13F CIENA Common equity shares 171779309 4,832,458 7,935 0.16 125,158 23.94 0.0106
2018-02-14 2017-12-31 13F CIENA Common equity shares 171779309 4,824,523 166,164 3.57 100,980 -1.33 0.0081
2017-11-14 2017-09-30 13F CIENA Common equity shares 171779309 4,658,359 9,819 0.21 102,346 -12.01 0.0088
2017-08-14 2017-06-30 13F CIENA Common equity shares 171779309 4,648,540 172,876 3.86 116,319 10.08 0.0103
2017-05-15 2017-03-31 13F CIENA Common equity shares 171779309 4,475,664 155,632 3.60 105,671 0.21 0.0094
2017-02-09 2016-12-31 13F CIENA Common equity shares 171779309 4,320,032 -69,567 -1.58 105,450 10.20 0.0099
2017-01-13 2016-09-30 13F/A-1 CIENA Common equity shares 171779309 4,389,599 125,242 2.94 95,690 19.68 0.0096
2016-11-14 2016-09-30 13F CIENA Common equity shares 171779309 4,389,599 95,690
2016-08-12 2016-06-30 13F CIENA Common equity shares 171779309 4,264,357 136,550 3.31 79,958 1.84 0.0086
2016-05-20 2016-03-31 13F/A-1 CIENA Common equity shares 171779309 4,127,807 133,596 3.34 78,512 -4.99 0.0085
2016-05-12 2016-03-31 13F CIENA Common equity shares 171779309 4,127,807 78,512
2016-02-16 2015-12-31 13F CIENA Common equity shares 171779309 3,994,211 140,123 3.64 82,637 3.49 0.0090
2015-11-16 2015-09-30 13F CIENA Common equity shares 171779309 3,854,088 55,765 1.47 79,853 -11.22 0.0093
2015-08-13 2015-06-30 13F CIENA Common equity shares 171779309 3,798,323 119,799 3.26 89,941 26.62 0.0096
2015-05-15 2015-03-31 13F CIENA Common equity shares 171779309 3,678,524 119,361 3.35 71,030 2.82 0.0073
2015-02-11 2014-12-31 13F CIENA Common equity shares 171779309 3,559,163 -43,167 -1.20 69,083 14.70 0.0069
2014-11-12 2014-09-30 13F/A-1 CIENA Common equity shares 171779309 3,602,330 -25,866 -0.71 60,227 -23.36 0.0065
2014-11-10 2014-09-30 13F CIENA Common equity shares 171779309 3,602,330 60,227
2014-08-12 2014-06-30 13F CIENA Common equity shares 171779309 3,628,196 -74,427 -2.01 78,580 -6.68 0.0085
2014-05-15 2014-03-31 13F/A-1 CIENA Common equity shares 171779309 3,702,623 116,776 3.26 84,205 -1.87 0.0096
2014-05-13 2014-03-31 13F CIENA Common equity shares 171779309 3,703,855 84,233
2014-02-06 2013-12-31 13F/A-1 CIENA Common equity shares 171779309 3,585,847 -109,695 -2.97 85,808 -7.04 0.0095
2014-02-06 2013-12-31 13F CIENA Common equity shares 171779309 3,609,708 56,668
2013-11-12 2013-09-30 13F CIENA Common equity shares 171779309 3,695,542 -23,093 -0.62 92,310 27.83 0.0114
2013-08-08 2013-06-30 13F CIENA Common equity shares 171779309 3,718,635 3,718,635 72,215 0.0094
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.