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Side-by-side financial comparison of CIENA CORP (CIEN) and KT CORP (KT). Click either name above to swap in a different company.
Ciena Corporation is an American optical networking systems and software company based in Hanover, Maryland. The company has been described as a vital player in optical connectivity. The company reported revenues of $4.8 billion and more than 9,000 employees, as of November 2025. Gary Smith serves as president and chief executive officer (CEO).
KT Corporation, formerly Korea Telecom, is a South Korean telecommunications company, mobile network operator (MNO) and mobile virtual network operator (MVNO). KT is the large wireless carrier in South Korea, with 13.5 million subscribers as of Q4 2023.
8-Quarter Revenue & Profit Trend
Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.
| Q3 25 | $1.2B | — | ||
| Q2 25 | $1.1B | — | ||
| Q1 25 | $1.1B | — | ||
| Q4 24 | $1.1B | — | ||
| Q3 24 | $942.3M | — | ||
| Q2 24 | $910.8M | — | ||
| Q1 24 | $1.0B | — | ||
| Q4 23 | $1.1B | — |
| Q3 25 | $50.3M | — | ||
| Q2 25 | $9.0M | — | ||
| Q1 25 | $44.6M | — | ||
| Q4 24 | $37.0M | — | ||
| Q3 24 | $14.2M | — | ||
| Q2 24 | $-16.8M | — | ||
| Q1 24 | $49.5M | — | ||
| Q4 23 | $91.2M | — |
| Q3 25 | 41.3% | — | ||
| Q2 25 | 40.2% | — | ||
| Q1 25 | 44.0% | — | ||
| Q4 24 | 40.9% | — | ||
| Q3 24 | 42.9% | — | ||
| Q2 24 | 42.7% | — | ||
| Q1 24 | 45.0% | — | ||
| Q4 23 | 43.1% | — |
| Q3 25 | 6.0% | — | ||
| Q2 25 | 2.9% | — | ||
| Q1 25 | 7.5% | — | ||
| Q4 24 | 5.3% | — | ||
| Q3 24 | 2.8% | — | ||
| Q2 24 | -0.4% | — | ||
| Q1 24 | 8.2% | — | ||
| Q4 23 | 8.1% | — |
| Q3 25 | 4.1% | — | ||
| Q2 25 | 0.8% | — | ||
| Q1 25 | 4.2% | — | ||
| Q4 24 | 3.3% | — | ||
| Q3 24 | 1.5% | — | ||
| Q2 24 | -1.8% | — | ||
| Q1 24 | 4.8% | — | ||
| Q4 23 | 8.1% | — |
| Q3 25 | $0.35 | — | ||
| Q2 25 | $0.06 | — | ||
| Q1 25 | $0.31 | — | ||
| Q4 24 | $0.26 | — | ||
| Q3 24 | $0.10 | — | ||
| Q2 24 | $-0.12 | — | ||
| Q1 24 | $0.34 | — | ||
| Q4 23 | $0.62 | — |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
