Ciena (CIEN) Stock Analysis & Price (Updated Oct 16, 2026, 4:00 PM ET)
Updated Oct 16, 2026, 4:00 PM ET
CIEN slides 6.7% to $332.73, a 1-month low, 5 down days in a row. Closed at $332.73, -6.67% vs the prior close of $356.52. Day range $330.98–$354.60, opened at $350.95.
CIEN daily analysis — what happened
A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.
Oct 16, 2026 — CIEN slides 6.7% to $332.73, a 1-month low, 5 down days in a row
- Closed at $332.73, -6.67% vs the prior close of $356.52. Day range $330.98–$354.60, opened at $350.95.
- Volume was 3.19M shares, 1.2x its 50-day average of 2.65M.
- Price is -12.0% vs its 50-day average ($377.90) and -16.8% vs its 200-day average ($399.92).
- 52-week range $159.56–$637.51; today's close sits at 36% of that range, 47.8% below the 52-week high.
- That makes 5 straight losses.
Oct 15, 2026 — CIEN dips 0.9% to $356.52, 4 down days in a row
- Closed at $356.52, -0.86% vs the prior close of $359.60. Day range $333.15–$357.83, opened at $342.50.
- Volume was 3.48M shares, 1.3x its 50-day average of 2.61M.
- Price is -6.0% vs its 50-day average ($379.32) and -10.7% vs its 200-day average ($399.44).
- 52-week range $159.56–$637.51; today's close sits at 41% of that range, 44.1% below the 52-week high.
- That makes 4 straight losses.
Oct 14, 2026 — CIEN slides 10.2% to $359.60, 3 down days in a row
- Closed at $359.60, -10.19% vs the prior close of $400.40. Day range $356.78–$393.88, opened at $393.88.
- Volume was 3.32M shares, 1.3x its 50-day average of 2.59M.
- Price is -5.5% vs its 50-day average ($380.37) and -9.8% vs its 200-day average ($398.86).
- 52-week range $159.01–$637.51; today's close sits at 42% of that range, 43.6% below the 52-week high.
- That makes 3 straight losses.
Oct 13, 2026 — CIEN dips 1.1% to $400.40
- Closed at $400.40, -1.14% vs the prior close of $405.01. Day range $381.64–$401.87, opened at $393.33.
- Volume was 2.74M shares, 1.1x its 50-day average of 2.56M.
- Price is +5.0% vs its 50-day average ($381.40) and +0.5% vs its 200-day average ($398.27).
- 52-week range $159.01–$637.51; today's close sits at 50% of that range, 37.2% below the 52-week high.
Oct 12, 2026 — CIEN slides 10.0% to $405.01
- Closed at $405.01, -9.95% vs the prior close of $449.77. Day range $400.20–$445.95, opened at $443.53.
- Volume was 3.32M shares, 1.3x its 50-day average of 2.53M.
- Price is +6.2% vs its 50-day average ($381.21) and +1.9% vs its 200-day average ($397.47).
- 52-week range $153.27–$637.51; today's close sits at 52% of that range, 36.5% below the 52-week high.
Oct 9, 2026 — CIEN jumps 5.6% to $449.77, a 3-month high
- Closed at $449.77, +5.60% vs the prior close of $425.93. Day range $424.02–$454.73, opened at $436.00.
- Volume was 3.77M shares, 1.5x its 50-day average of 2.51M.
- Price is +18.2% vs its 50-day average ($380.65) and +13.4% vs its 200-day average ($396.64).
- 52-week range $153.27–$637.51; today's close sits at 61% of that range, 29.4% below the 52-week high.
Oct 8, 2026 — CIEN slides 4.6% to $425.93
- Closed at $425.93, -4.60% vs the prior close of $446.45. Day range $421.11–$443.99, opened at $436.15.
- Volume was 3.70M shares, 1.5x its 50-day average of 2.48M.
- Price is +12.4% vs its 50-day average ($379.10) and +7.7% vs its 200-day average ($395.58).
- 52-week range $152.54–$637.51; today's close sits at 56% of that range, 33.2% below the 52-week high.
Oct 7, 2026 — CIEN rises 0.6% to $446.45, a 1-month high
- Closed at $446.45, +0.63% vs the prior close of $443.65. Day range $422.30–$448.00, opened at $428.98.
- Volume was 3.37M shares, 1.3x its 50-day average of 2.50M.
- Price is +18.4% vs its 50-day average ($377.18) and +13.1% vs its 200-day average ($394.60).
- 52-week range $147.36–$637.51; today's close sits at 61% of that range, 30.0% below the 52-week high.
Oct 6, 2026 — CIEN jumps 13.8% to $443.65, a 1-month high on 2.7x normal volume
- Closed at $443.65, +13.85% vs the prior close of $389.69. Day range $392.00–$446.37, opened at $393.58.
- Volume was 6.40M shares, 2.7x its 50-day average of 2.40M — unusually heavy trading.
- Price is +18.2% vs its 50-day average ($375.27) and +12.8% vs its 200-day average ($393.42).
- 52-week range $147.36–$637.51; today's close sits at 60% of that range, 30.4% below the 52-week high.
Oct 5, 2026 — CIEN dips 0.4% to $389.69
- Closed at $389.69, -0.42% vs the prior close of $391.34. Day range $382.50–$397.47, opened at $393.77.
- Volume was 2.47M shares, 1.0x its 50-day average of 2.38M.
- Price is +4.2% vs its 50-day average ($373.94) and -0.6% vs its 200-day average ($392.22).
- 52-week range $147.36–$637.51; today's close sits at 49% of that range, 38.9% below the 52-week high.
Oct 2, 2026 — CIEN jumps 3.2% to $391.34, a 1-month high
- Closed at $391.34, +3.22% vs the prior close of $379.14. Day range $377.03–$395.96, opened at $385.00.
- Volume was 2.52M shares, 1.1x its 50-day average of 2.37M.
- Price is +4.6% vs its 50-day average ($373.96) and +0.0% vs its 200-day average ($391.32).
- 52-week range $147.36–$637.51; today's close sits at 50% of that range, 38.6% below the 52-week high.
CIEN latest news & SEC filings
Every SEC filing by or about CIEN in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Oct 15, 2026 · Form 144 — Planned insider sale
Notice of proposed sale (Form 144) — an insider or affiliate plans to sell restricted or control shares
A notice of intent, not a completed sale. Any actual sale by a director or officer shows up later on Form 4.
Oct 15, 2026 · Form 144 — Planned insider sale
Notice of proposed sale (Form 144) — an insider or affiliate plans to sell restricted or control shares
A notice of intent, not a completed sale. Any actual sale by a director or officer shows up later on Form 4.
Oct 15, 2026 · Form 144 — Planned insider sale
Notice of proposed sale (Form 144) — an insider or affiliate plans to sell restricted or control shares
A notice of intent, not a completed sale. Any actual sale by a director or officer shows up later on Form 4.
Oct 15, 2026 · Form 144 — Planned insider sale
Notice of proposed sale (Form 144) — an insider or affiliate plans to sell restricted or control shares
A notice of intent, not a completed sale. Any actual sale by a director or officer shows up later on Form 4.
Oct 13, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Smith Gary B sold 2,952 shares at $369.66 (≈$1.09M) on Oct 1, 2026; now holds 228,407
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Oct 6, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Graff Marc D. sold 97 shares at $355.19 (≈$34.45K) on Oct 1, 2026; now holds 107,136
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Sep 3, 2026 · Form 10-Q — Quarterly report
Quarterly report (unaudited financial statements for the quarter)
Quarter ended Aug 1, 2026:
- Revenue: $1.67B (prior year $1.22B) (+37.0% vs Aug 2, 2025)
- Net income: $266.42M (prior year $50.31M) (+429.6% vs Aug 2, 2025)
- Diluted EPS: $1.83 (prior year $0.35) (+422.9% vs Aug 2, 2025)
Sep 3, 2026 · Form SCHEDULE 13G/A — Update to a passive 5%+ stake (13G)
Update to a passive 5%+ stake (13G)
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Sep 3, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 2.02 — Reported results of operations (earnings release).
This is a results-day filing: the earnings press release is attached as an exhibit.
Aug 6, 2026 · Form SCHEDULE 13G/A — Update to a passive 5%+ stake (13G)
Update to a passive 5%+ stake (13G)
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Things to know before you trade CIEN
- Last results release: Sep 3, 2026 (8-K Item 2.02). Previous ones: Jun 4, 2026, Mar 5, 2026, Dec 11, 2025. Based on that rhythm, the next report is likely around Dec 3, 2026 — an estimate, not a confirmed date.
- How much it moves: over the last 20 sessions the average daily move was 4.13% (largest 13.8%). That is a volatile stock.
- Liquidity: about 2.89M shares (≈$960.65M) trade per day on average.
- 52-week position: $332.73 vs a range of $159.56–$637.51 (36% of the range).
- Dividends: no cash dividends in the last 2 years.
- Splits: none in the last 2 years.
- Insider trades (Form 4, last 12 months, recent 25 shown): 0 open-market buys, 25 sales; latest: Joseph Cumello sold 1,586 shares on Sep 25, 2026.
- Latest filings: 10-Q Sep 3, 2026; 8-K Sep 3, 2026; 8-K Jun 11, 2026.
- Share count: 141.81M shares outstanding (Aug 28, 2026), +0.5% vs a year earlier.
- Listing: NYSE · industry: Telephone & Telegraph Apparatus.
CIEN market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 16, 2026 | 350.95 | 354.60 | 330.98 | 332.73 | 3.19M |
| Oct 15, 2026 | 342.50 | 357.83 | 333.15 | 356.52 | 3.48M |
| Oct 14, 2026 | 393.88 | 393.88 | 356.78 | 359.60 | 3.32M |
| Oct 13, 2026 | 393.33 | 401.87 | 381.64 | 400.40 | 2.74M |
| Oct 12, 2026 | 443.53 | 445.95 | 400.20 | 405.01 | 3.32M |
| Oct 9, 2026 | 436.00 | 454.73 | 424.02 | 449.77 | 3.77M |
| Oct 8, 2026 | 436.15 | 443.99 | 421.11 | 425.93 | 3.70M |
| Oct 7, 2026 | 428.98 | 448.00 | 422.30 | 446.45 | 3.37M |
| Oct 6, 2026 | 393.58 | 446.37 | 392.00 | 443.65 | 6.40M |
| Oct 5, 2026 | 393.77 | 397.47 | 382.50 | 389.69 | 2.47M |
| Oct 2, 2026 | 385.00 | 395.96 | 377.03 | 391.34 | 2.52M |
| Oct 1, 2026 | 355.19 | 381.00 | 350.68 | 379.14 | 2.56M |
| Sep 30, 2026 | 354.92 | 359.98 | 340.52 | 351.82 | 2.66M |
| Sep 29, 2026 | 350.16 | 356.21 | 344.80 | 354.92 | 2.23M |
| Sep 28, 2026 | 352.42 | 356.99 | 339.33 | 344.19 | 1.83M |
| Sep 25, 2026 | 363.00 | 366.43 | 355.01 | 356.91 | 1.62M |
| Sep 24, 2026 | 350.40 | 363.46 | 346.56 | 358.43 | 1.42M |
| Sep 23, 2026 | 368.64 | 369.00 | 351.53 | 355.91 | 1.85M |
| Sep 22, 2026 | 364.31 | 376.74 | 363.14 | 368.56 | 2.40M |
| Sep 21, 2026 | 365.05 | 367.62 | 356.46 | 365.96 | 2.89M |
About Ciena
Ciena (CIEN) is listed on the NYSE and classified by the SEC under “Telephone & Telegraph Apparatus”. Its business address is in HANOVER, MD. State of incorporation: MD. Fiscal year ends October 31. SEC CIK 936395.
CIEN board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| Hassan Ahmed | Director | Mar 30, 2026 |
| Bruce L. Claflin | Director | Sep 28, 2026 |
| Lawton W Fitt | Director | Mar 30, 2026 |
| Patrick Gallagher | Director | Mar 30, 2026 |
| Devinder Kumar | Director | Mar 30, 2026 |
| Thomas Michael Nevens | Director | Sep 25, 2026 |
| Joanne Beth Olsen | Director | Mar 30, 2026 |
| Mary G Puma | Director | Mar 30, 2026 |
| Gary B Smith | President & CEO | Sep 22, 2026 |
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| Joseph Cumello | EVP & General Mgr. | Sep 29, 2026 |
| Dino Diperna | EVP & Chief R&D Officer | Sep 22, 2026 |
| Brodie Gage | EVP & Chief Product & | Sep 22, 2026 |
| Marc D. Graff | EVP & Chief Financial Officer | Sep 22, 2026 |
| Grant Hoffman | EVP & Chief Supply | Sep 22, 2026 |
| Sheela Kosaraju | EVP & Chief Legal Officer | Sep 22, 2026 |
| Jason Phipps | EVP & Chief Customer Officer | Sep 22, 2026 |
| David M Rothenstein | EVP & Chief Strategy Officer | Sep 22, 2026 |
| Gary B Smith | President & CEO | Sep 22, 2026 |
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Sep 25, 2026 | Joseph Cumello | Sale | 1,586 | $358.52 |
| Sep 25, 2026 | Joseph Cumello | Sale | 1,586 | $358.52 |
| Sep 25, 2026 | Joseph Cumello | Sale | 1,586 | $358.52 |
| Sep 25, 2026 | Joseph Cumello | Sale | 1,586 | $358.52 |
| Sep 24, 2026 | Bruce L. Claflin | Sale | 2,857 | $355.91 |
| Sep 24, 2026 | Bruce L. Claflin | Sale | 2,857 | $355.91 |
| Sep 24, 2026 | Bruce L. Claflin | Sale | 2,857 | $355.91 |
| Sep 24, 2026 | Bruce L. Claflin | Sale | 2,857 | $355.91 |
| Sep 23, 2026 | Thomas Michael Nevens | Sale | 3,738 | $359.04 |
| Sep 23, 2026 | Thomas Michael Nevens | Sale | 3,738 | $359.04 |
| Sep 23, 2026 | Thomas Michael Nevens | Sale | 3,738 | $359.04 |
| Sep 23, 2026 | Thomas Michael Nevens | Sale | 3,738 | $359.04 |
| Sep 16, 2026 | Dino Diperna | Sale | 249 | $350.00 |
| Sep 16, 2026 | Dino Diperna | Sale | 249 | $350.00 |
| Sep 16, 2026 | Dino Diperna | Sale | 249 | $350.00 |
CIEN financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| Nov 1, 2025 | $4.77B | $123.34M | 0.85 | $806.09M |
| Nov 2, 2024 | $4.01B | $83.96M | 0.58 | $514.53M |
| Oct 28, 2023 | $4.39B | $254.83M | 1.71 | $168.33M |
| Oct 29, 2022 | $3.63B | $152.90M | 1.00 | $-167.76M |
| Oct 30, 2021 | $3.62B | $500.20M | 3.19 | $541.65M |
Latest balance sheet: total assets $8.00B, total liabilities $4.94B, cash $2.45B (as of Aug 1, 2026).
CIEN earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| Sep 3, 2026 | 8-K Item 2.02 (results) | $317.46 |
| Jun 4, 2026 | 8-K Item 2.02 (results) | $535.63 |
| Mar 5, 2026 | 8-K Item 2.02 (results) | $299.30 |
| Dec 11, 2025 | 8-K Item 2.02 (results) | $242.37 |
| Sep 4, 2025 | 8-K Item 2.02 (results) | $116.92 |
| Jun 5, 2025 | 8-K Item 2.02 (results) | $73.05 |
| Mar 11, 2025 | 8-K Item 2.02 (results) | $63.95 |
| Dec 12, 2024 | 8-K Item 2.02 (results) | $84.52 |
| Sep 4, 2024 | 8-K Item 2.02 (results) | — |
| Jun 6, 2024 | 8-K Item 2.02 (results) | — |
| Mar 7, 2024 | 8-K Item 2.02 (results) | — |
| Dec 7, 2023 | 8-K Item 2.02 (results) | — |
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 16, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.