Optical networking stocks that drove the AI data-center rally fell sharply as a broader tech selloff deepened ahead of earnings. Coherent (COHR) traded at $209.82, down 12%, Applied Optoelectronics (AAOI) fell 10% to $69.30, and Lumentum (LITE) dropped 9% to $770.53. The Roundhill Photonics & Optics ETF (LYTE) lost 10%, while the Invesco QQQ Trust (QQQ) fell only 2%, suggesting group-wide caution. The article notes these shares still sit higher for the year, and Lumentum's CEO said its data center optical components are sold out for years. Quarterly reports from the three companies arriving in coming weeks will show whether capacity can keep pace with demand.
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data centersartificial intelligencetech stocksQQQ
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Related tickers and likely impact
QQQ
▼ Likely negativeInvesco QQQ Trust
Relevance: high
| Market | US stocks |
|---|---|
| Sector | ETF |
| Close on 10/21/2026 | 725.21 |
| Change that session | +1.06% |
SPY
▼ Likely negativeSPDR S&P 500 ETF
Relevance: medium
| Market | US stocks |
|---|---|
| Sector | ETF |
| Close on 10/21/2026 | 773.13 |
| Change that session | +0.53% |
Impact is scored by AI from the headline and may be wrong. It is not investment advice.
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