CIENNYSETelephone & Telegraph ApparatusFiscal year ends October 31
CIENA CORP
Financials through Q3 FY2026, quarter ended Aug 1, 2026Last filing: 10-Q on Sep 3, 2026
$344.20+11.47 (+3.45%)
Close on Oct 19, 2026
- Market cap
- $50.24B
- P/E (TTM)
- 76.8
- Dividend yield
- –
Price history
Daily open, high, low, close and volume
| Date | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Daily prices are not in StockData yet. This table fills in once an end-of-day price source is connected. | ||||||
Stock splits
From SEC filings
| Date | Ratio | Effect on per-share figures |
|---|---|---|
| Sep 25, 2006 | 1-for-7 reverse | Earlier per-share figures multiplied by 7 |
| Sep 19, 2000 | 2-for-1 | Earlier per-share figures divided by 2 |