西耶納公司
MX ˙ BMV ˙ US1717793095
SecurityMX:CIEN / Ciena Corporation
InstitutionFmr Llc
Latest Disclosed Ownership21,664,064 shares
Ownership 15.00%
Fmr Llc ownership in CIEN / Ciena Corporation

2024-11-12 - Fmr Llc has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 21,664,064 shares of Ciena Corporation (MX:CIEN). This represents 14.999 percent ownership of the company. In their previous filing dated 2024-02-12 , Fmr Llc had reported owning 14,726,348 shares, indicating an increase of 47.11 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2024-11-12 2024-11-12 13G/A 14,726,348 21,664,064 47.11 15.00 47.70
2024-02-12 2024-02-12 13G/A 11,317,654 14,726,348 30.12 10.15 29.96
2024-02-09 2024-02-09 13G/A 8,910,634 11,317,654 27.01 7.81 30.17
2023-02-09 2023-02-09 13G/A 8,887,807 8,910,634 0.26 6.00 4.62
2022-02-09 2022-02-09 13G 1,178,245 8,887,807 654.33 5.74 380.57
2012-03-12 2012-03-12 13G/A 1,178,245 1.19
2012-02-14 2012-02-14 13G/A 6,070,780 6.23

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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 21,209,756 81,546 0.39 8,234,263 66.64 0.0862
2026-02-17 2025-12-31 13F CIENA COM NEW 171779309 21,128,210 -30,176 -0.14 4,941,254 60.32 0.2519
2025-11-13 2025-09-30 13F CIENA COM NEW 171779309 21,158,386 -74,244 -0.35 3,082,142 78.48 0.1603
2025-08-14 2025-06-30 13F CIENA COM NEW 171779309 21,232,630 -80,393 -0.38 1,726,850 34.08 0.0974
2025-05-12 2025-03-31 13F CIENA COM NEW 171779309 21,313,023 -221,723 -1.03 1,287,946 -29.48 0.0822
2025-02-13 2024-12-31 13F CIENA COM NEW 171779309 21,534,746 -129,320 -0.60 1,826,362 36.88 0.1090
2024-11-13 2024-09-30 13F CIENA COM NEW 171779309 21,664,066 108,407 0.50 1,334,290 28.48 0.0812
2024-08-13 2024-06-30 13F CIENA COM NEW 171779309 21,555,659 2,419,371 12.64 1,038,552 9.75 0.0665
2024-05-13 2024-03-31 13F CIENA COM NEW 171779309 19,136,288 7,818,633 69.08 946,289 85.76 0.0635
2024-02-13 2023-12-31 13F CIENA COM NEW 171779309 11,317,655 2,377,015 26.59 509,408 20.56 0.0391
2023-11-13 2023-09-30 13F CIENA COM NEW 171779309 8,940,640 371,041 4.33 422,535 16.04 0.0365
2023-08-11 2023-06-30 13F CIENA COM NEW 171779309 8,569,599 -229,233 -2.61 364,122 -21.21 0.0305
2023-08-11 2023-03-31 13F/A-1 CIENA COM NEW 171779309 8,798,832 -111,802 -1.25 462,115 1.73 0.0423
2023-05-11 2023-03-31 13F CIENA COM NEW 171779309 8,798,832 -111,802 462,115 0.0423
2023-02-13 2022-12-31 13F CIENA COM NEW 171779309 8,910,634 299,753 3.48 454,264 30.48 0.0451
2022-11-10 2022-09-30 13F CIENA COM NEW 171779309 8,610,881 6,781 0.08 348,138 -11.46 0.0363
2022-08-12 2022-06-30 13F CIENA COM NEW 171779309 8,604,100 -213,330 -2.42 393,207 -26.45 0.0392
2022-05-13 2022-03-31 13F CIENA COM NEW 171779309 8,817,430 -70,377 -0.79 534,601 -21.85 0.0427
2022-02-14 2021-12-31 13F CIENA COM NEW 171779309 8,887,807 1,701,056 23.67 684,095 85.37 0.0505
2022-02-14 2021-09-30 13F/A-1 CIENA COM NEW 171779309 7,186,751 825,922 12.98 369,040 1.98 0.0293
2021-11-15 2021-09-30 13F CIENA COM NEW 171779309 7,186,751 825,922 369,040 0.0293
2021-08-13 2021-06-30 13F CIENA COM NEW 171779309 6,360,829 1,418,204 28.69 361,867 33.80 0.0283
2021-05-14 2021-03-31 13F CIENA COM NEW 171779309 4,942,625 -63,936 -1.28 270,461 2.22 0.0231
2021-02-08 2020-12-31 13F CIENA COM NEW 171779309 5,006,561 -1,760,245 -26.01 264,597 -1.48 0.0235
2020-11-13 2020-09-30 13F CIENA COM NEW 171779309 6,766,806 584,256 9.45 268,574 -19.79 0.0271
2020-08-24 2020-06-30 13F/A-1 CIENA COM NEW 171779309 6,182,550 4,615,896 294.63 334,847 436.88 0.0368
2020-08-13 2020-06-30 13F CIENA COM NEW 171779309 6,182,550 4,615,896 334,847 8,226.2109
2020-05-14 2020-03-31 13F CIENA COM NEW 171779309 1,566,654 658,625 72.53 62,369 60.90 0.0086
2020-02-07 2019-12-31 13F CIENA COM NEW 171779309 908,029 108,202 13.53 38,763 23.54 0.0043
2019-11-13 2019-09-30 13F CIENA COM NEW 171779309 799,827 540,974 208.99 31,377 194.70 0.0038
2019-08-13 2019-06-30 13F CIENA COM NEW 171779309 258,853 -990,972 -79.29 10,647 -77.19 0.0012
2019-05-13 2019-03-31 13F CIENA COM NEW 171779309 1,249,825 1,072,632 605.35 46,669 676.78 0.0056
2019-02-13 2018-12-31 13F CIENA COM NEW 171779309 177,193 153,839 658.73 6,008 724.14 0.0008
2018-11-09 2018-09-30 13F CIENA COM NEW 171779309 23,354 -645,964 -96.51 729 -95.89 0.0001
2018-08-10 2018-06-30 13F CIENA COM NEW 171779309 669,318 -1,048,272 -61.03 17,744 -60.11 0.0021
2018-05-14 2018-03-31 13F CIENA COM NEW 171779309 1,717,590 -19,160 -1.10 44,486 22.38 0.0053
2018-02-12 2017-12-31 13F CIENA COM NEW 171779309 1,736,750 299,310 20.82 36,350 15.10 0.0043
2017-11-13 2017-09-30 13F CIENA COM NEW 171779309 1,437,440 -200 -0.01 31,580 -12.20 0.0038
2017-08-29 2017-06-30 13F/A-1 CIENA COM NEW 171779309 1,437,640 97,610 7.28 35,969 13.69 0.0045
2017-08-11 2017-06-30 13F CIENA COM NEW 171779309 1,437,640 97,610 35,969
2017-05-11 2017-03-31 13F CIENA COM NEW 171779309 1,340,030 -180,169 -11.85 31,638 -14.74 0.0040
2017-02-10 2016-12-31 13F CIENA COM NEW 171779309 1,520,199 -28,970 -1.87 37,108 9.88 0.0050
2016-11-14 2016-09-30 13F CIENA COM NEW 171779309 1,549,169 88,869 6.09 33,772 23.35 0.0045
2016-08-11 2016-06-30 13F CIENA COM NEW 171779309 1,460,300 37,700 2.65 27,380 1.19 0.0037
2016-05-16 2016-03-31 13F CIENA COM NEW 171779309 1,422,600 333,300 30.60 27,058 20.06 0.0037
2016-02-12 2015-12-31 13F CIENA COM NEW 171779309 1,089,300 -61,400 -5.34 22,537 -5.48 0.0030
2015-11-10 2015-09-30 13F CIENA COM NEW 171779309 1,150,700 233,700 25.49 23,843 9.80 0.0034
2015-08-25 2015-06-30 13F/A-1 CIENA COM NEW 171779309 917,000 -1,314,100 -58.90 21,715 -49.60 0.0028
2015-08-13 2015-06-30 13F CIENA COM NEW 171779309 917,000 21,715
2015-05-14 2015-03-31 13F CIENA COM NEW 171779309 2,231,100 1,736,900 351.46 43,083 349.16 0.0055
2015-02-17 2014-12-31 13F CIENA COM NEW 171779309 494,200 342,900 226.64 9,592 279.13 0.0012
2014-11-14 2014-09-30 13F CIENA COM NEW 171779309 151,300 58,500 63.04 2,530 25.87 0.0003
2014-08-14 2014-06-30 13F CIENA COM NEW 171779309 92,800 -721,000 -88.60 2,010 -89.14 0.0003
2014-05-15 2014-03-31 13F CIENA COM NEW 171779309 813,800 -669,000 -45.12 18,506 -47.85 0.0026
2014-02-13 2013-12-31 13F CIENA COM NEW 171779309 1,482,800 328,300 28.44 35,484 23.04 0.0050
2013-11-14 2013-09-30 13F CIENA COM NEW 171779309 1,154,500 271,000 30.67 28,839 68.08 0.0044
2013-09-24 2013-06-30 13F/A-1 CIENA COM NEW 171779309 883,500 883,500 17,158 0.0028
2013-08-14 2013-06-30 13F CIENA COM NEW 171779309 883,500 17,158 0.0028
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.