Ciena Corporation
US ˙ NYSE ˙ US1717793095

SecurityCIEN / Ciena Corporation
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership12,534 shares
Latest Disclosed Value $ 4,866,211
Advisory Services Network, LLC reports 9.72% increase in ownership of CIEN / Ciena Corporation

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 12,534 shares of Ciena Corporation (US:CIEN) valued at $4,866,075 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 11,424 shares of Ciena Corporation. This represents a change in shares of 9.72% during the quarter. The current value of the position is $6,713,586 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 CORP COM Stock 171779309 12,534 1,110 9.72 4,866 82.18 0.0450
2026-02-17 2025-12-31 13F CIENA CORP COM Stock 171779309 11,424 1,003 9.62 2,672 75.96 0.0378
2025-11-18 2025-09-30 13F CIENA Stock 171779309 10,421 -4,189 -28.67 1,518 11.95 0.0223
2025-08-19 2025-06-30 13F CIENA Stock 171779309 14,610 5,369 58.10 1,356 143.01 0.0218
2025-05-15 2025-03-31 13F CIENA Stock 171779309 9,241 1,101 13.53 558 -19.13 0.0107
2025-02-13 2024-12-31 13F CIENA Stock 171779309 8,140 -9,018 -52.56 690 -16.46 0.0129
2024-11-14 2024-09-30 13F CIENA Stock 171779309 17,158 0 0.00 827 0.00 0.0171
2024-08-13 2024-06-30 13F CIENA Stock 171779309 17,158 11,750 217.27 827 209.36 0.0171
2024-05-06 2024-03-31 13F CIENA Stock 171779309 5,408 -48 -0.88 267 8.98 0.0059
2024-02-09 2023-12-31 13F CIENA Stock 171779309 5,456 20 0.37 246 -4.30 0.0060
2023-11-14 2023-09-30 13F CIENA Stock 171779309 5,436 5,436 257 0.0069
2023-08-09 2023-06-30 13F CIENA Stock 171779309 0 -3,674 -100.00 0 -100.00
2023-05-17 2023-03-31 13F CIENA Stock 171779309 3,674 0 0.00 193 2.67 0.0053
2023-02-13 2022-12-31 13F CIENA Stock 171779309 3,674 3,674 187 0.0057
2022-08-02 2022-06-30 13F CIENA Stock 171779309 0 -3,588 -100.00 0 -100.00
2022-05-23 2022-03-31 13F CIENA Stock 171779309 3,588 -39 -1.08 217 -22.22 0.0064
2022-02-14 2021-12-31 13F CIENA Stock 171779309 3,627 -70 -1.89 279 46.84 0.0080
2021-11-05 2021-09-30 13F CIENA Stock 171779309 3,697 100 2.78 190 -7.32 0.0060
2021-08-12 2021-06-30 13F CIENA Stock 171779309 3,597 -200 -5.27 205 -1.44 0.0065
2021-05-24 2021-03-31 13F CIENA Stock 171779309 3,797 -850 -18.29 208 -15.10 0.0077
2021-02-09 2020-12-31 13F CIENA Stock 171779309 4,647 1,091 30.68 245 75.00 0.0098
2020-11-16 2020-09-30 13F CIENA Stock 171779309 3,556 3,556 140 0.0066
2020-08-10 2020-06-30 13F CIENA Stock 171779309 0 -818 -100.00 0 -100.00
2020-05-15 2020-03-31 13F CIENA Stock 171779309 818 348 74.04 33 57.14 0.0022
2020-02-04 2019-12-31 13F CIENA Stock 171779309 470 -3,504 -88.17 21 -87.12 0.0011
2019-11-04 2019-09-30 13F CIENA Stock 171779309 3,974 0 0.00 163 0.00 0.0100
2019-08-01 2019-06-30 13F CIENA Stock 171779309 3,974 -5,967 -60.02 163 -56.06 0.0100
2019-05-20 2019-03-31 13F CIENA Stock 171779309 9,941 -1,757 -15.02 371 -6.55 0.0261
2019-02-15 2018-12-31 13F CIENA Stock 171779309 11,698 11,605 12,478.49 397 13,133.33 0.0347
2018-11-02 2018-09-30 13F CIENA Stock 171779309 93 0 0.00 3 50.00 0.0002
2018-07-27 2018-06-30 13F CIENA Stock 171779309 93 -1,700 -94.81 2 -95.65 0.0002
2018-04-23 2018-03-31 13F CIENA Stock 171779309 1,793 -141 -7.29 46 15.00 0.0037
2018-02-08 2017-12-31 13F CIENA Stock 171779309 1,934 0 0.00 40 -4.76 0.0035
2017-10-12 2017-09-30 13F CIENA Stock 171779309 1,934 1,800 1,343.28 42 1,300.00 0.0048
2017-08-17 2017-06-30 13F CIENA CORP COM Stock 171779309 134 -31 -18.79 3 -25.00 0.0004
2017-04-28 2017-03-31 13F CIENA CORP COM Stock 171779309 165 165 4 0.0006
2016-07-27 2016-06-30 13F CIENA Stock 171779309 0 -143 -100.00 0 -100.00
2016-04-21 2016-03-31 13F CIENA Stock 171779309 143 0 0.00 3 0.00 0.0008
2016-01-27 2015-12-31 13F CIENA CORP COM Stock 171779309 143 0 0.00 3 0.00 0.0010
2015-10-01 2015-09-30 13F CIENA Stock 171779309 143 0 0.00 3 0.00 0.0009
2015-07-02 2015-06-30 13F CIENA Stock 171779309 143 0 0.00 3 0.00 0.0009
2015-04-08 2015-03-31 13F CIENA Stock 171779309 143 0 0.00 3 0.00 0.0008
2015-01-23 2014-12-31 13F CIENA CORP COM Stock 171779309 143 143 3 0.0009
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.