CIEN — CIENA CORP
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
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Measured signals that fired on CIEN
| date | signal | measured base rate |
|---|---|---|
| 2026-08-13 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-31 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-16 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-07-09 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-02 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
| 2026-06-04 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-17 | SMITH GARY B President, CEO | Open-market sale 10b5-1 plan | 3.0K | 447.78 | 1.3M |
| 2026-08-17 | Gage Brodie SVP Global Products & Supply | Open-market sale 10b5-1 plan | 1.2K | 439.24 | 527.1K |
| 2026-08-14 | Graff Marc D. SVP & Chief Financial Officer | Open-market sale 10b5-1 plan | 5.0K | 430.72 | 2.2M |
| 2026-08-14 | Rothenstein David M SVP and Chief Strategy Officer | Open-market sale 10b5-1 plan | 2.5K | 438.10 | 1.1M |
| 2026-08-03 | SMITH GARY B President, CEO | Open-market sale 10b5-1 plan | 3.0K | 379.81 | 1.1M |
| 2026-08-01 | Graff Marc D. SVP & Chief Financial Officer | Shares withheld for tax | 14.4K | 377.05 | 5.4M |
| 2026-07-15 | SMITH GARY B President, CEO | Open-market sale 10b5-1 plan | 3.0K | 421.10 | 1.2M |
| 2026-07-15 | Rothenstein David M SVP and Chief Strategy Officer | Open-market sale 10b5-1 plan | 2.5K | 420.91 | 1.1M |
| 2026-07-15 | Gage Brodie SVP Global Products & Supply | Open-market sale 10b5-1 plan | 1.2K | 449.15 | 539.0K |
| 2026-07-15 | DiPerna Dino SVP Global R&D | Open-market sale 10b5-1 plan | 391 | 449.15 | 175.6K |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| FMR LLC | 8.2B | 21.2M |
| BlackRock, Inc. | 5.2B | 13.4M |
| JPMORGAN CHASE & CO | 3.7B | 10.2M |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.6B | 9.2M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2.9B | 7.4M |
| STATE STREET CORP | 2.4B | 6.3M |
| GEODE CAPITAL MANAGEMENT, LLC | 1.6B | 4.1M |
| Capital Research Global Investors | 1.1B | 2.8M |
| BANK OF AMERICA CORP /DE/ | 758.8M | 2.0M |
| Capital World Investors | 669.6M | 1.7M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| 4 | 2026-08-18 | 2026-08-14 | on EDGAR ↗ |
| 4 | 2026-08-18 | 2026-08-14 | on EDGAR ↗ |
| 4 | 2026-08-18 | 2026-08-17 | on EDGAR ↗ |
| 4 | 2026-08-18 | 2026-08-17 | on EDGAR ↗ |
| 144 | 2026-08-17 | — | on EDGAR ↗ |
| 144 | 2026-08-14 | — | on EDGAR ↗ |
| 144 | 2026-08-14 | — | on EDGAR ↗ |
| SCHEDULE 13G/A | 2026-08-06 | — | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- Ciena's Massive AI Tailwind: Optical Networks Are Now Critical · 2026-08-20
- Ciena CEO Sells 2,952 Shares for $1.3 Million · 2026-08-19
- Why is Ciena stock gaining today? · 2026-08-19
- Why Ciena Stock Tanked by Almost 9% on Tuesday · 2026-08-18
- Nasdaq Drops, Chip Stocks Crater As Bond Yields Bite: Stock Market Today · 2026-08-18 · benzinga
- Why is Ciena stock sliding today? · 2026-08-18
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