Ciena Corporation
US ˙ NYSE ˙ US1717793095

SecurityCIEN / Ciena Corporation
InstitutionBoothbay Fund Management, Llc
Latest Disclosed Ownership37,994 shares
Latest Disclosed Value $ 14,750,411
Boothbay Fund Management, Llc ownership in CIEN / Ciena Corporation

On May 15, 2026 - Boothbay Fund Management, Llc filed a 13F-HR form disclosing ownership of 37,994 shares of Ciena Corporation (US:CIEN) valued at $14,750,411 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 62,259 shares of Ciena Corporation. This represents a change in shares of -38.97% during the quarter. The current value of the position is $18,549,051 USD.

Boothbay Fund Management, Llc has a history of taking positions in derivatives of the underlying security (CIEN) in the form of stock options.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CIEN / Ciena Corporation Historical Put/Call Ratio
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 37,994 -24,265 -38.97 14,750 1.30 0.1912
2026-02-17 2025-12-31 13F CIENA COM NEW 171779309 62,259 -100,868 -61.83 14,561 -38.73 0.2172
2025-11-14 2025-09-30 13F CIENA COM NEW 171779309 163,127 34,851 27.17 23,763 127.78 0.3455
2025-08-14 2025-06-30 13F CIENA COM NEW 171779309 128,276 -107,452 -45.58 10,433 -26.77 0.2027
2025-05-15 2025-03-31 13F CIENA COM NEW 171779309 235,728 20,701 9.63 14,245 -21.89 0.3754
2025-02-14 2024-12-31 13F CIENA COM NEW 171779309 215,027 27,782 14.84 18,236 58.13 0.4498
2024-11-14 2024-09-30 13F CIENA COM NEW 171779309 187,245 77,624 70.81 11,532 118.37 0.2623
2024-08-14 2024-06-30 13F CIENA COM NEW 171779309 109,621 -35,699 -24.57 5,282 -26.51 0.1251
2024-05-15 2024-03-31 13F CIENA COM NEW 171779309 145,320 39,698 37.58 7,186 51.16 0.1384
2024-02-14 2023-12-31 13F CIENA COM NEW 171779309 105,622 4,679 4.64 4,754 -0.34 0.1213
2023-11-14 2023-09-30 13F CIENA COM NEW 171779309 100,943 94,868 1,561.61 4,771 1,748.84 0.1133
2023-08-14 2023-06-30 13F CIENA COM NEW 171779309 6,075 6,075 258 0.0057
2023-05-15 2023-03-31 13F CIENA COM NEW 171779309 0 -21,136 -100.00 0 -100.00
2023-02-14 2022-12-31 13F CIENA COM NEW 171779309 21,136 2,873 15.73 1,078 45.93 0.0249
2022-11-14 2022-09-30 13F CIENA COM NEW 171779309 18,263 -36,127 -66.42 738 -70.31 0.0184
2022-08-15 2022-06-30 13F CIENA COM NEW 171779309 54,390 12,343 29.36 2,486 -2.47 0.0654
2022-05-16 2022-03-31 13F CIENA COM NEW 171779309 42,047 15,748 59.88 2,549 25.94 0.0593
2022-02-14 2021-12-31 13F CIENA COM NEW 171779309 26,299 -9,921 -27.39 2,024 8.82 0.0476
2021-11-15 2021-09-30 13F CIENA COM NEW 171779309 36,220 8,714 31.68 1,860 18.85 0.0515
2021-08-17 2021-06-30 13F/A-1 CIENA COM NEW 171779309 27,506 -12,645 -31.49 1,565 -28.77 0.0503
2021-08-16 2021-06-30 13F CIENA COM NEW 171779309 27,506 -12,645 1,565 0.0492
2021-05-17 2021-03-31 13F CIENA COM NEW 171779309 40,151 14,114 54.21 2,197 59.67 0.0823
2021-02-12 2020-12-31 13F CIENA COM NEW 171779309 26,037 -12,275 -32.04 1,376 -9.53 0.0512
2020-11-16 2020-09-30 13F CIENA COM NEW 171779309 38,312 -8,211 -17.65 1,521 -39.64 0.0920
2020-08-14 2020-06-30 13F CIENA COM NEW 171779309 46,523 -35,809 -43.49 2,520 -23.12 0.1723
2020-05-15 2020-03-31 13F CIENA COM NEW 171779309 82,332 35,247 74.86 3,278 63.08 0.2716
2020-02-14 2019-12-31 13F CIENA COM NEW 171779309 47,085 7,730 19.64 2,010 30.18 0.1748
2019-11-14 2019-09-30 13F Ciena COM NEW 171779309 39,355 -1,342 -3.30 1,544 -7.77 0.1416
2019-08-14 2019-06-30 13F CIENA COM NEW 171779309 40,697 -23,695 -36.80 1,674 -30.37 0.1523
2019-05-15 2019-03-31 13F CIENA COM NEW 171779309 64,392 15,918 32.84 2,404 46.23 0.2329
2019-02-14 2018-12-31 13F CIENA COM NEW 171779309 48,474 10,233 26.76 1,644 37.57 0.2396
2018-11-14 2018-09-30 13F CIENA COM NEW 171779309 38,241 38,241 1,195 0.1181
2017-08-14 2017-06-30 13F Ciena COM NEW 171779309 0 -33,849 -100.00 0 -100.00
2017-05-15 2017-03-31 13F Ciena COM NEW 171779309 33,849 22,493 198.07 799 188.45 0.1489
2017-07-18 2016-12-31 13F/A-2 Ciena COM NEW 171779309 11,356 -6,938 -37.93 277 -20.86 0.0631
2017-02-16 2016-12-31 13F/A-1 CIENA COM NEW 171779309 11,356 0 277 0.0684
2017-02-15 2016-12-31 13F CIENA COM NEW 171779309 11,356 277
2016-11-14 2016-09-30 13F Ciena EQUITIES 171779309 18,294 -367 -1.97 0 -100.00 0.1241
2017-07-18 2016-06-30 13F/A-1 CIENA COM NEW 171779309 18,661 -22,975 -55.18 350 -55.81 0.1731
2016-08-15 2016-06-30 13F CIENA COM NEW 171779309 18,661 350
2017-07-18 2016-03-31 13F/A-4 Ciena COM NEW 171779309 41,636 183 0.44 792 -7.69 0.5916
2016-05-16 2016-03-31 13F CIENA COM NEW 171779309 41,636 792
2017-07-18 2015-12-31 13F/A-3 CIENA COM NEW 171779309 41,453 41,453 0.00 858 0.00 0.4839
2016-06-09 2015-12-31 13F/A-1 CIENA COM NEW 171779309 41,453 0 858 0.5944
2016-02-16 2015-12-31 13F CIENA COM NEW 171779309 11,254 233
2016-06-09 2015-03-31 13F/A-2 CIENA COM NEW 171779309 0 -36,999 -100.00 0 -100.00
2017-07-18 2014-12-31 13F/A-3 Ciena COM NEW 171779309 36,999 36,999 239 0.2300
2016-06-09 2014-12-31 13F/A-1 CIENA COM NEW 171779309 12,333 -24,666 239 0.2328
2015-02-17 2014-12-31 13F CIENA COM NEW 171779309 12,333 239 0.2066
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-08-14 2025-06-30 13F CIENA COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-15 2025-03-31 13F CIENA COM NEW Put 78,300 4,732 n/a n/a n/a
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.