Ciena Corporation
MX ˙ BMV ˙ US1717793095
SecurityMX:CIEN / Ciena Corporation
InstitutionSystematic Financial Management Lp
Latest Disclosed Ownership7,018 shares
Latest Disclosed Value $ 2,724,598
Systematic Financial Management Lp reports 57.90% decrease in ownership of CIEN / Ciena Corporation

On May 13, 2026 - Systematic Financial Management Lp filed a 13F-HR form disclosing ownership of 7,018 shares of Ciena Corporation (MX:CIEN) valued at $2,724,598 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 16,669 shares of Ciena Corporation. This represents a change in shares of -57.90% 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 7,018 -9,651 -57.90 2,725 -30.12 0.0514
2026-02-09 2025-12-31 13F Ciena COM NEW 171779309 16,669 -21,331 -56.13 3,898 -29.58 0.0919
2025-11-13 2025-09-30 13F Ciena COM NEW 171779309 38,000 -16,980 -30.88 5,535 23.80 0.1346
2025-08-13 2025-06-30 13F Ciena COM NEW 171779309 54,980 -180 -0.33 4,472 34.14 0.1193
2025-05-14 2025-03-31 13F Ciena COM NEW 171779309 55,160 0 0.00 3,333 -28.75 0.0950
2025-02-14 2024-12-31 13F Ciena COM NEW 171779309 55,160 -400 -0.72 4,678 36.74 0.1191
2024-11-14 2024-09-30 13F Ciena COM NEW 171779309 55,560 -1,955 -3.40 3,422 23.46 0.0872
2024-08-16 2024-06-30 13F Ciena COM NEW 171779309 57,515 -620 -1.07 2,771 -3.58 0.0842
2024-05-15 2024-03-31 13F Ciena COM NEW 171779309 58,135 17,435 42.84 2,875 56.96 0.0802
2024-02-14 2023-12-31 13F Ciena COM NEW 171779309 40,700 1,650 4.23 1,832 -0.76 0.0543
2023-11-14 2023-09-30 13F Ciena COM NEW 171779309 39,050 -3,255 -7.69 1,846 2.67 0.0594
2023-08-14 2023-06-30 13F Ciena COM NEW 171779309 42,305 -170 -0.40 1,798 -19.42 0.0567
2023-05-12 2023-03-31 13F Ciena COM NEW 171779309 42,475 -55 -0.13 2,231 2.86 0.0729
2023-02-15 2022-12-31 13F Ciena COM NEW 171779309 42,530 7,450 21.24 2,168 52.89 0.0710
2022-11-14 2022-09-30 13F Ciena COM NEW 171779309 35,080 -3,175 -8.30 1,418 -18.88 0.0517
2022-08-15 2022-06-30 13F Ciena COM NEW 171779309 38,255 12,295 47.36 1,748 11.05 0.0607
2022-05-11 2022-03-31 13F Ciena COM NEW 171779309 25,960 13,050 101.08 1,574 58.35 0.0491
2022-02-14 2021-12-31 13F Ciena COM NEW 171779309 12,910 1,600 14.15 994 71.08 0.0295
2021-11-12 2021-09-30 13F Ciena COM NEW 171779309 11,310 3,850 51.61 581 37.03 0.0180
2021-08-12 2021-06-30 13F Ciena COM NEW 171779309 7,460 0 0.00 424 3.92 0.0128
2021-05-10 2021-03-31 13F Ciena COM NEW 171779309 7,460 55 0.74 408 4.35 0.0149
2021-02-12 2020-12-31 13F Ciena COM NEW 171779309 7,405 4,655 169.27 391 258.72 0.0172
2020-11-12 2020-09-30 13F Ciena COM NEW 171779309 2,750 2,750 109 0.0060
2019-11-06 2019-09-30 13F Ciena COM NEW 171779309 0 -19,523 -100.00 0 -100.00
2019-07-26 2019-06-30 13F Ciena COM NEW 171779309 19,523 -41,137 -67.82 803 -64.55 0.0312
2019-05-03 2019-03-31 13F Ciena COM NEW 171779309 60,660 -154,751 -71.84 2,265 -68.99 0.0775
2019-02-13 2018-12-31 13F Ciena COM NEW 171779309 215,411 164,381 322.13 7,305 358.28 0.2245
2018-11-06 2018-09-30 13F Ciena COM NEW 171779309 51,030 -7,565 -12.91 1,594 2.64 0.0385
2018-08-08 2018-06-30 13F Ciena COM NEW 171779309 58,595 58,595 1,553 0.0379
2016-05-11 2016-03-31 13F Ciena COM NEW 171779309 0 -77,190 -100.00 0 -100.00
2016-02-10 2015-12-31 13F Ciena COM NEW 171779309 77,190 -4,603,238 -98.35 1,597 -98.35 0.0175
2015-11-06 2015-09-30 13F Ciena COM NEW 171779309 4,680,428 573,927 13.98 96,978 -0.27 1.0291
2015-08-10 2015-06-30 13F Ciena COM NEW 171779309 4,106,501 4,106,501 97,241 0.8321
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.