Ciena Corporation
US ˙ NYSE ˙ US1717793095

SecurityCIEN / Ciena Corporation
InstitutionMacquarie Group Ltd
Latest Disclosed Ownership18,916 shares
Latest Disclosed Value $ 7,343,759
Macquarie Group Ltd reports 3.27% decrease in ownership of CIEN / Ciena Corporation

On May 15, 2026 - Macquarie Group Ltd filed a 13F-HR form disclosing ownership of 18,916 shares of Ciena Corporation (US:CIEN) valued at $7,343,759 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 19,556 shares of Ciena Corporation. This represents a change in shares of -3.27% during the quarter. The current value of the position is $10,131,977 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 COM NEW 171779309 18,916 -640 -3.27 7,344 60.57 0.0342
2026-02-13 2025-12-31 13F CIENA COM NEW 171779309 19,556 -120,756 -86.06 4,574 -77.63 0.0200
2025-11-13 2025-09-30 13F CIENA COM NEW 171779309 140,312 -10,034 -6.67 20,439 67.15 0.0239
2025-08-14 2025-06-30 13F CIENA COM NEW 171779309 150,346 -12,857 -7.88 12,228 23.99 0.0150
2025-08-14 2025-03-31 13F/A-1 CIENA COM NEW 171779309 163,203 -61,344 -27.32 9,862 -43.05 0.0122
2025-05-15 2025-03-31 13F CIENA COM NEW 171779309 163,203 -61,344 9,862 0.0081
2025-02-14 2024-12-31 13F CIENA COM NEW 171779309 224,547 -38,083 -14.50 17,318 7.06 0.0210
2024-11-14 2024-09-30 13F CIENA COM NEW 171779309 262,630 -1,805 -0.68 16,175 26.96 0.0175
2024-08-09 2024-06-30 13F CIENA COM NEW 171779309 264,435 -143,434 -35.17 12,740 -36.83 0.0146
2024-05-14 2024-03-31 13F CIENA COM NEW 171779309 407,869 -18,756 -4.40 20,169 5.04 0.0229
2024-02-14 2023-12-31 13F CIENA COM NEW 171779309 426,625 -18,073 -4.06 19,202 -8.63 0.0222
2023-11-14 2023-09-30 13F CIENA COM NEW 171779309 444,698 -16,416 -3.56 21,016 7.26 0.0264
2023-10-27 2023-06-30 13F/A-2 CIENA COM NEW 171779309 461,114 10,764 2.39 19,593 -17.16 0.0224
2023-10-12 2023-06-30 13F/A-1 CIENA COM NEW 171779309 461,114 10,764 19,593 0.0197
2023-08-14 2023-06-30 13F CIENA COM NEW 171779309 461,114 10,764 19,593 0.0199
2023-06-01 2023-03-31 13F/A-1 CIENA COM NEW 171779309 450,350 -4,092 -0.90 23,652 2.09 0.0281
2023-05-15 2023-03-31 13F CIENA COM NEW 171779309 450,350 -4,092 23,652 0.0217
2023-02-21 2022-12-31 13F CIENA COM NEW 171779309 454,442 5,622 1.25 23,167 27.07 0.0274
2022-11-14 2022-09-30 13F CIENA COM NEW 171779309 448,820 -4,461 -0.98 18,231 -11.99 0.0224
2022-08-17 2022-06-30 13F/A-1 CIENA COM NEW 171779309 453,281 94,172 26.22 20,715 -4.86 0.0233
2022-08-15 2022-06-30 13F CIENA COM NEW 171779309 453,281 94,172 20,715 0.0074
2022-05-16 2022-03-31 13F CIENA COM NEW 171779309 359,109 -662 -0.18 21,773 -21.37 0.0166
2022-02-11 2021-12-31 13F Ciena COM NEW 171779309 359,771 -44,238 -10.95 27,692 33.48 0.0231
2021-11-12 2021-09-30 13F CIENA COM NEW 171779309 404,009 -1,200 -0.30 20,746 -10.01 0.0177
2021-08-13 2021-06-30 13F CIENA COM NEW 171779309 405,209 -5,934 -1.44 23,053 2.47 0.0189
2021-05-14 2021-03-31 13F CIENA COM NEW 171779309 411,143 -11,188 -2.65 22,498 0.80 0.0318
2021-02-16 2020-12-31 13F CIENA COM NEW 171779309 422,331 289,590 218.16 22,320 323.61 0.0326
2020-11-13 2020-09-30 13F CIENA COM NEW 171779309 132,741 -339,443 -71.89 5,269 -79.40 0.0089
2020-08-11 2020-06-30 13F CIENA COM NEW 171779309 472,184 -32,646 -6.47 25,573 27.25 0.0440
2020-05-15 2020-03-31 13F CIENA COM NEW 171779309 504,830 -34,772 -6.44 20,097 -12.75 0.0413
2020-03-18 2019-12-31 13F/A-2 CIENA COM NEW 171779309 539,602 407,764 309.29 23,035 345.38 0.0329
2020-02-28 2019-12-31 13F/A-1 CIENA COM NEW 171779309 539,602 0 23,035 0.0333
2020-02-14 2019-12-31 13F CIENA COM NEW 171779309 539,602 407,764 23,035 28,906.9728
2019-11-14 2019-09-30 13F CIENA COM NEW 171779309 131,838 4,617 3.63 5,172 -1.17 0.0087
2019-11-06 2019-06-30 13F/A-2 CIENA COM NEW 171779309 127,221 -20,855 -14.08 5,233 -5.35 0.0088
2019-09-24 2019-06-30 13F/A-1 CIENA COM NEW 171779309 127,221 0 5,233 0.0089
2019-08-14 2019-06-30 13F CIENA COM NEW 171779309 127,221 -20,855 5,233
2019-05-15 2019-03-31 13F CIENA COM NEW 171779309 148,076 26,967 22.27 5,529 34.62 0.0094
2019-02-15 2018-12-31 13F CIENA COM NEW 171779309 121,109 -15,705 -11.48 4,107 -3.91 0.0079
2018-11-15 2018-09-30 13F CIENA COM NEW 171779309 136,814 -14,259 -9.44 4,274 6.72 0.0070
2019-03-21 2018-06-30 13F/A-1 CIENA COM NEW 171779309 151,073 7,324 5.09 4,005 7.57 0.0069
2018-08-14 2018-06-30 13F CIENA COM NEW 171779309 151,073 7,324 4,005
2018-05-11 2018-03-31 13F CIENA COM NEW 171779309 143,749 38,959 37.18 3,723 69.77 0.0068
2018-02-14 2017-12-31 13F CIENA COM NEW 171779309 104,790 -2,344 -2.19 2,193 -6.84 0.0039
2017-11-08 2017-09-30 13F CIENA COM NEW 171779309 107,134 16,860 18.68 2,354 4.21 0.0042
2017-08-14 2017-06-30 13F CIENA COM NEW 171779309 90,274 -9,268 -9.31 2,259 -3.87 0.0041
2017-05-15 2017-03-31 13F Ciena COM NEW 171779309 99,542 6,484 6.97 2,350 3.43 0.0043
2017-03-30 2016-12-31 13F/A-1 Ciena COMMON 171779309 93,058 0 0.00 2,272 11.98 0.0043
2017-02-15 2016-12-31 13F Ciena COMMON 171779309 93,058 2,272
2016-11-15 2016-09-30 13F CIENA COMMON 171779309 93,058 22,298 31.51 2,029 52.90 0.0039
2016-09-14 2016-06-30 13F/A-1 CIENA COMMON 171779309 70,760 70,760 0.00 1,327 0.0026
2016-08-15 2016-06-30 13F CIENA COMMON 171779309 70,760 1,327
2016-05-16 2016-03-31 13F CIENA COMMON 171779309 0 -29,703 -100.00 0 -100.00
2016-02-16 2015-12-31 13F CIENA COMMON 171779309 29,703 -50,898 -63.15 615 -63.17 0.0013
2015-11-16 2015-09-30 13F CIENA COMMON 171779309 80,601 20,806 34.80 1,670 17.94 0.0036
2015-08-21 2015-06-30 13F/A-1 CIENA COMMON 171779309 59,795 59,795 1,416 0.0028
2015-08-14 2015-06-30 13F CIENA COMMON 171779309 59,795 1,416 0.0027
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.