시에나 주식회사
MX ˙ BMV ˙ US1717793095
SecurityMX:CIEN / Ciena Corporation
InstitutionFirst Trust Advisors Lp
Latest Disclosed Ownership436,945 shares
Latest Disclosed Value $ 169,635,157
First Trust Advisors Lp reports 14.74% decrease in ownership of CIEN / Ciena Corporation

On May 13, 2026 - First Trust Advisors Lp filed a 13F-HR form disclosing ownership of 436,945 shares of Ciena Corporation (MX:CIEN) valued at $169,635,157 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 512,460 shares of Ciena Corporation. This represents a change in shares of -14.74% 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)
2026-05-13 2026-03-31 13F CIENA COM NEW 171779309 436,945 -75,515 -14.74 169,635 41.54 0.1209
2026-02-13 2025-12-31 13F CIENA COM NEW 171779309 512,460 -12,670 -2.41 119,849 56.68 0.0871
2025-11-12 2025-09-30 13F CIENA COM NEW 171779309 525,130 5,403 1.04 76,496 80.97 0.0568
2025-08-13 2025-06-30 13F CIENA COM NEW 171779309 519,727 -23,418 -4.31 42,269 28.78 0.0340
2025-05-14 2025-03-31 13F CIENA COM NEW 171779309 543,145 11,767 2.21 32,822 -27.17 0.0291
2025-02-13 2024-12-31 13F CIENA COM NEW 171779309 531,378 -38,165 -6.70 45,066 28.47 0.0397
2024-11-13 2024-09-30 13F CIENA COM NEW 171779309 569,543 -188,853 -24.90 35,078 -4.00 0.0334
2024-08-13 2024-06-30 13F CIENA COM NEW 171779309 758,396 -642,409 -45.86 36,540 -47.25 0.0373
2024-05-13 2024-03-31 13F CIENA COM NEW 171779309 1,400,805 -314,132 -18.32 69,270 -10.26 0.0703
2024-02-13 2023-12-31 13F CIENA COM NEW 171779309 1,714,937 -169,599 -9.00 77,189 -13.33 0.0842
2023-11-13 2023-09-30 13F CIENA COM NEW 171779309 1,884,536 104,432 5.87 89,063 17.75 0.1056
2023-08-14 2023-06-30 13F CIENA COM NEW 171779309 1,780,104 554,387 45.23 75,637 17.49 0.0860
2023-05-15 2023-03-31 13F CIENA COM NEW 171779309 1,225,717 -123,871 -9.18 64,375 -6.43 0.0743
2023-02-09 2022-12-31 13F CIENA COM NEW 171779309 1,349,588 -166,784 -11.00 68,799 12.22 0.0818
2022-11-14 2022-09-30 13F CIENA COM NEW 171779309 1,516,372 -91,424 -5.69 61,307 -16.56 0.0795
2022-08-12 2022-06-30 13F CIENA COM NEW 171779309 1,607,796 -134,746 -7.73 73,477 -30.45 0.0907
2022-05-13 2022-03-31 13F CIENA COM NEW 171779309 1,742,542 -417,551 -19.33 105,650 -36.46 0.1081
2022-02-08 2021-12-31 13F CIENA COM NEW 171779309 2,160,093 -225,548 -9.45 166,263 35.72 0.1617
2021-11-15 2021-09-30 13F CIENA COM NEW 171779309 2,385,641 54,181 2.32 122,503 -7.64 0.1317
2021-10-12 2021-06-30 13F/A-1 CIENA COM NEW 171779309 2,331,460 -172,927 -6.90 132,637 -3.21 0.1436
2021-08-16 2021-06-30 13F CIENA COM NEW 171779309 2,331,460 -172,927 132,637 0.1368
2021-05-14 2021-03-31 13F CIENA COM NEW 171779309 2,504,387 -404,273 -13.90 137,040 -10.85 0.1659
2021-02-02 2020-12-31 13F CIENA COM NEW 171779309 2,908,660 -139,093 -4.56 153,723 27.08 0.2037
2020-11-05 2020-09-30 13F CIENA COM NEW 171779309 3,047,753 292,871 10.63 120,965 -18.93 0.1937
2020-07-22 2020-06-30 13F CIENA COM NEW 171779309 2,754,882 -561,206 -16.92 149,204 13.02 0.2586
2020-05-06 2020-03-31 13F CIENA COM NEW 171779309 3,316,088 -516,753 -13.48 132,013 -19.32 0.2991
2020-02-03 2019-12-31 13F CIENA COM NEW 171779309 3,832,841 436,040 12.84 163,624 22.79 0.2794
2019-11-04 2019-09-30 13F CIENA COM NEW 171779309 3,396,801 3,217,184 1,791.14 133,257 1,703.70 0.2509
2019-07-30 2019-06-30 13F CIENA COM NEW 171779309 179,617 15,152 9.21 7,388 20.31 0.0139
2019-06-19 2019-03-31 13F/A-1 CIENA COM NEW 171779309 164,465 -19,125 -10.42 6,141 -1.37 0.0122
2019-05-09 2019-03-31 13F CIENA COM NEW 171779309 164,465 -19,125 6,141
2019-02-07 2018-12-31 13F CIENA COM NEW 171779309 183,590 2,109 1.16 6,226 9.83 0.0148
2018-10-25 2018-09-30 13F CIENA COM NEW 171779309 181,481 26,973 17.46 5,669 38.40 0.0106
2018-08-02 2018-06-30 13F CIENA COM NEW 171779309 154,508 132,765 610.61 4,096 627.53 0.0085
2018-04-23 2018-03-31 13F CIENA COM NEW 171779309 21,743 21,743 563 0.0013
2018-02-08 2017-12-31 13F CIENA COM NEW 171779309 0 -99,088 -100.00 0 -100.00
2017-10-24 2017-09-30 13F CIENA COM NEW 171779309 99,088 50,366 103.37 2,177 78.59 0.0056
2017-08-02 2017-06-30 13F CIENA COM NEW 171779309 48,722 48,722 1,219 0.0033
2017-05-02 2017-03-31 13F CIENA COM NEW 171779309 0 -9,205 -100.00 0 -100.00
2017-02-06 2016-12-31 13F CIENA COM NEW 171779309 9,205 5 0.05 225 11.94 0.0007
2016-11-01 2016-09-30 13F CIENA COM NEW 171779309 9,200 -1,174 -11.32 201 3.08 0.0006
2016-08-04 2016-06-30 13F CIENA COM NEW 171779309 10,374 -82,959 -88.88 195 -89.01 0.0006
2016-05-10 2016-03-31 13F CIENA COM NEW 171779309 93,333 93,333 0.00 1,775 0.0057
2015-05-04 2015-03-31 13F CIENA COM NEW 171779309 0 -10,504 -100.00 0 -100.00
2015-02-13 2014-12-31 13F CIENA COM NEW 171779309 10,504 -53,681 -83.63 204 -80.99 0.0007
2014-11-12 2014-09-30 13F CIENA COM NEW 171779309 64,185 -40,845 -38.89 1,073 -52.84 0.0042
2014-08-11 2014-06-30 13F CIENA COM NEW 171779309 105,030 -28,393 -21.28 2,275 -25.02 0.0095
2014-05-12 2014-03-31 13F CIENA COM NEW 171779309 133,423 -30,175 -18.44 3,034 -22.50 0.0133
2014-08-08 2013-12-31 13F/A-1 CIENA COM NEW 171779309 163,598 33,385 25.64 3,915 20.24 0.0190
2014-02-13 2013-12-31 13F CIENA COM NEW 171779309 163,598 3,915
2013-11-12 2013-09-30 13F CIENA COM NEW 171779309 130,213 89,748 221.79 3,256 314.25 0.0176
2013-08-12 2013-06-30 13F CIENA COM NEW 171779309 40,465 40,465 786 0.0051
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.