$CIEN
Ciena Corporation
XNYS•Technology•Telephone & Telegraph Apparatus
Why is CIEN down today? It is at $392.31 (-1.79%), and our scanner flagged it 262 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment CIEN spikes, and full due diligence on CIEN — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $392.31
- Change today
- -1.79%
- Previous close
- $399.47
- 52-week range
- $86.00 – $637.51
- Market cap
- $57.41B
- Institutional own.
- 99.9%
- Total held
- 99.9%
- Tradeable float
- 142K 0% of shares · after 100% institutions
- Short interest
- 3.7M ▼ -7% vs prior · as of 2026-07-31
- Days to cover
- 1.6d
- Avg daily volume
- 2.9M
- Next earnings
- Sep 3 · in 14d (before open)
- Sector
- Technology
- Industry
- Telephone & Telegraph Apparatus
- Exchange
- XNYS
- 5m
- 0.4x
- 15m
- 0.3x
- 1h
- 0.5x
- 1D
- 0.1x
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Why is $CIEN down today?
CIEN is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 3 unusual-volume and momentum alerts on CIEN today, peaking at 3.9x its normal volume.
Latest filing4Insider trade (Form 4)Aug 18, 2026 · yesterdayAnalyst data via Nasdaq. Not investment advice.
Insiders
1 buys, 28 sells last 3 months (17/103 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Gage Brodie Officer | Sold (automatic/other) | -1K | sold 3.0% | 38K | $527K at $439.24 | Aug 17, 26 |
Smith Gary B Officer | Sold (automatic/other) | -3K | sold 1.2% | 246K | $1.3M at $447.78 | Aug 17, 26 |
Rothenstein David M Officer | Sold (automatic/other) | -3K | sold 1.4% | 180K | $1.1M at $438.10 | Aug 14, 26 |
Graff Marc D. Officer | Sold (automatic/other) | -5K | sold 4.4% | 108K | $2.2M at $430.72 | Aug 14, 26 |
Smith Gary B Officer | Sold (automatic/other) | -3K | sold 1.2% | 249K | $1.1M at $379.81 | Aug 3, 26 |
Graff Marc D. Officer | Sold (automatic/other) | -14K 0.01% of company | sold 11% | 113K | $5.4M at $377.05 | Aug 1, 26 |
Diperna Dino Officer | Sold (automatic/other) | -782 | sold 1.9% | 40K | $351K at $449.15 | Jul 15, 26 |
Gage Brodie Officer | Sold (automatic/other) | -1K | sold 2.9% | 40K | $539K at $449.15 | Jul 15, 26 |
Rothenstein David M Officer | Sold (automatic/other) | -3K | sold 1.3% | 183K | $1.1M at $420.91 | Jul 15, 26 |
Smith Gary B Officer | Sold (automatic/other) | -3K | sold 1.2% | 252K | $1.2M at $421.10 | Jul 15, 26 |
Smith Gary B Officer | Sold (automatic/other) | -3K | sold 1.1% | 255K | $1.4M at $468.83 | Jul 1, 26 |
Phipps Jason Officer | Sold (automatic/other) | -3K | sold 4.0% | 62K | $1.2M at $466.20 | Jul 1, 26 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
$CIEN Sentiment
BearishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$CIEN Activity
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
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CIEN stock FAQ
Why is $CIEN down today?
CIEN is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 3 unusual-volume and momentum alerts on CIEN today, peaking at 3.9x its normal volume.
What is the CIEN stock price today?
CIEN last traded at $392.31, down 1.79% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
When does CIEN report earnings?
Ciena Corporation (CIEN) is next expected to report earnings on Thursday, September 3, 2026 (before open), about 14 days away. Earnings reports often cause large overnight gaps, so many traders manage risk around the date. The date can shift until the company officially confirms it.
Where can I see live CIEN alerts?
The CIEN Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged CIEN 262 times in the last 30 days.
What exchange is CIEN on?
CIEN (Ciena Corporation) trades on XNYS, with a market cap of about $57.41B in the TELEPHONE & TELEGRAPH APPARATUS sector.
Is CIEN good for day trading?
That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge CIEN for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.