시에나 주식회사
MX ˙ BMV ˙ US1717793095
SecurityMX:CIEN / Ciena Corporation
InstitutionGeode Capital Management, Llc
Latest Disclosed Ownership4,065,559 shares
Latest Disclosed Value $ 1,576,154,861
Geode Capital Management, Llc reports 51.28% increase in ownership of CIEN / Ciena Corporation

On May 15, 2026 - Geode Capital Management, Llc filed a 13F-HR form disclosing ownership of 4,065,559 shares of Ciena Corporation (MX:CIEN) valued at $1,576,154,861 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 2,687,437 shares of Ciena Corporation. This represents a change in shares of 51.28% during the quarter.

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 4,065,559 1,378,122 51.28 1,576,155 151.15 0.0524
2026-02-09 2025-12-31 13F CIENA COM NEW 171779309 2,687,437 145,948 5.74 627,567 69.48 0.0387
2025-11-12 2025-09-30 13F CIENA COM NEW 171779309 2,541,489 38,749 1.55 370,288 81.89 0.0236
2025-08-08 2025-06-30 13F CIENA COM NEW 171779309 2,502,740 299 0.01 203,581 34.58 0.0143
2025-05-13 2025-03-31 13F CIENA COM NEW 171779309 2,502,441 82,494 3.41 151,269 -26.32 0.0119
2025-02-12 2024-12-31 13F CIENA COM NEW 171779309 2,419,947 11,933 0.50 205,301 38.39 0.0159
2024-11-12 2024-09-30 13F CIENA COM NEW 171779309 2,408,014 33,074 1.39 148,348 29.61 0.0120
2024-08-09 2024-06-30 13F CIENA COM NEW 171779309 2,374,940 37,739 1.61 114,456 -0.99 0.0100
2024-05-13 2024-03-31 13F CIENA COM NEW 171779309 2,337,201 43,734 1.91 115,598 11.96 0.0107
2024-02-13 2023-12-31 13F CIENA COM NEW 171779309 2,293,467 58,778 2.63 103,246 -2.26 0.0108
2023-11-13 2023-09-30 13F CIENA COM NEW 171779309 2,234,689 46,836 2.14 105,630 13.63 0.0126
2023-08-11 2023-06-30 13F CIENA COM NEW 171779309 2,187,853 104,295 5.01 92,962 -15.05 0.0109
2023-05-15 2023-03-31 13F CIENA COM NEW 171779309 2,083,558 66,285 3.29 109,429 107,182.35 0.0142
2023-02-13 2022-12-31 13F CIENA COM NEW 171779309 2,017,273 79,549 4.11 103 -99.87 0.0144
2022-11-14 2022-09-30 13F CIENA COM NEW 171779309 1,937,724 -14,514 -0.74 78,342 -12.19 0.0119
2022-08-12 2022-06-30 13F CIENA COM NEW 171779309 1,952,238 -49,737 -2.48 89,217 -26.50 0.0131
2022-05-13 2022-03-31 13F CIENA COM NEW 171779309 2,001,975 -17,459 -0.86 121,379 -21.91 0.0152
2022-02-11 2021-12-31 13F CIENA COM NEW 171779309 2,019,434 -104,333 -4.91 155,435 42.53 0.0187
2021-11-12 2021-09-30 13F CIENA COM NEW 171779309 2,123,767 -256,251 -10.77 109,055 -19.46 0.0147
2021-08-13 2021-06-30 13F CIENA COM NEW 171779309 2,380,018 386,032 19.36 135,399 24.09 0.0187
2021-05-12 2021-03-31 13F CIENA COM NEW 171779309 1,993,986 65,280 3.38 109,110 7.04 0.0167
2021-02-12 2020-12-31 13F CIENA COM NEW 171779309 1,928,706 -32,879 -1.68 101,932 30.93 0.0171
2020-11-13 2020-09-30 13F CIENA COM NEW 171779309 1,961,585 -85,289 -4.17 77,855 -29.77 0.0153
2020-08-13 2020-06-30 13F CIENA COM NEW 171779309 2,046,874 -14,143 -0.69 110,857 35.11 0.0237
2020-05-14 2020-03-31 13F CIENA COM NEW 171779309 2,061,017 -261,446 -11.26 82,048 -17.24 0.0214
2020-02-20 2019-12-31 13F/A-1 CIENA COM NEW 171779309 2,322,463 -25,954 -1.11 99,145 7.62 0.0207
2020-02-13 2019-12-31 13F CIENA COM NEW 171779309 2,322,463 -25,954 99,145 12,635.1609
2019-11-12 2019-09-30 13F CIENA COM NEW 171779309 2,348,417 390,175 19.92 92,127 14.38 0.0215
2019-08-14 2019-06-30 13F CIENA COM NEW 171779309 1,958,242 -7,996 -0.41 80,542 9.70 0.0195
2019-05-14 2019-03-31 13F CIENA COM NEW 171779309 1,966,238 196,684 11.11 73,418 22.35 0.0190
2019-03-06 2018-12-31 13F/A-1 CIENA COM NEW 171779309 1,769,554 206,985 13.25 60,005 22.93 0.0186
2019-02-13 2018-12-31 13F CIENA COM NEW 171779309 1,769,554 206,985 60,005
2018-11-13 2018-09-30 13F CIENA COM NEW 171779309 1,562,569 134,675 9.43 48,814 28.96 0.0138
2018-08-14 2018-06-30 13F CIENA COM NEW 171779309 1,427,894 149,272 11.67 37,853 14.30 0.0116
2018-05-15 2018-03-31 13F CIENA COM NEW 171779309 1,278,622 82,668 6.91 33,116 32.30 0.0108
2018-02-13 2017-12-31 13F CIENA COM NEW 171779309 1,195,954 -50,994 -4.09 25,031 -8.63 0.0085
2017-11-14 2017-09-30 13F CIENA COM NEW 171779309 1,246,948 41,352 3.43 27,394 -9.18 0.0101
2017-08-14 2017-06-30 13F CIENA COM NEW 171779309 1,205,596 119,508 11.00 30,164 17.64 0.0119
2017-06-21 2017-03-31 13F/A-1 CIENA CORP COM COM NEW 171779309 1,086,088 97,842 9.90 25,642 6.30 0.0105
2017-05-12 2017-03-31 13F CIENA CORP COM COM NEW 171779309 1,086,088 25,642
2017-02-14 2016-12-31 13F CIENA CORP COM COM NEW 171779309 988,246 77,233 8.48 24,123 21.47 0.0112
2016-11-10 2016-09-30 13F CIENA CORP COM COM NEW 171779309 911,013 51,652 6.01 19,860 23.25 0.0100
2016-08-12 2016-06-30 13F CIENA CORP COM COM NEW 171779309 859,361 44,612 5.48 16,113 3.99 0.0088
2016-05-13 2016-03-31 13F CIENA CORP COM COM NEW 171779309 814,749 52,291 6.86 15,495 -1.77 0.0082
2016-02-12 2015-12-31 13F CIENA CORP COM COM NEW 171779309 762,458 23,967 3.25 15,774 3.09 0.0090
2015-11-13 2015-09-30 13F CIENA CORP COM COM NEW 171779309 738,491 50,801 7.39 15,301 -6.03 0.0093
2015-08-14 2015-06-30 13F CIENA CORP COM COM NEW 171779309 687,690 86,053 14.30 16,283 40.17 0.0093
2015-05-14 2015-03-31 13F CIENA CORP COM COM NEW 171779309 601,637 42,986 7.69 11,617 7.14 0.0066
2015-02-12 2014-12-31 13F CIENA CORP COM COM NEW 171779309 558,651 -3,341 -0.59 10,843 15.41 0.0065
2014-11-14 2014-09-30 13F CIENA CORP COM COM NEW 171779309 561,992 9,633 1.74 9,395 -21.47 0.0061
2014-08-13 2014-06-30 13F CIENA CORP COM COM NEW 171779309 552,359 29,390 5.62 11,964 0.61 0.0077
2014-05-14 2014-03-31 13F CIENA CORP COM COM NEW 171779309 522,969 28,463 5.76 11,892 0.50 0.0080
2014-02-14 2013-12-31 13F CIENA CORP COM COM NEW 171779309 494,506 29,892 6.43 11,833 1.96 0.0082
2013-11-14 2013-09-30 13F CIENA CORP COM COM NEW 171779309 464,614 -14,224 -2.97 11,606 24.81 0.0093
2013-08-14 2013-06-30 13F CIENA CORP COM COM NEW 171779309 478,838 478,838 9,299 0.0082
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.