Ciena shares jump 5.55% intraday as S&P 500 inclusion and AI infrastructure demand drive growth.

Ciena shares rise 5.47% premarket after rejoining S&P 500, driven by AI demand and 24% revenue growth guidance.

Ciena科技

Ciena's 15min chart sees KDJ Golden Cross and bullish Marubozu formation.

Ciena

Ciena to Join S&P 500 Index as Dayforce Exits

Ciena Returns to S&P 500 After 17-Year Absence

Catalyst<ul> <li>Recent Bullish Engulfing and WR Oversold signals in late November and early December point to rebound momentum for CIEN.</li> <li>Most analysts rate CIEN Buy or Strong Buy, showing broad institutional optimism.</li> <li>The company maintains strong cash reserves relative to market value.</li></ul>Risk<ul> <li>Technical indicators show that the market is in a volatile state and the direction is not clear enough.</li> <li>Fund flow trends show net outflows across small, medium, and large order sizes, suggesting reduced institutional confidence.</li></ul>

Key Factors

Ciena (CIEN) will join the S&P 500 on February 9, replacing Dayforce, reflecting its growing market presence in networking systems and software. CIEN's CEO sold 2,952 shares at $265.60 each on February 2, 2026. CIEN surged 7.25% on February 6, 2026, with a $9.02 billion volume spike, ranking it 13th in U.S. stock volume. CIEN plunged 7.9% intraday, with a $37 price swing and heavy options activity, signaling heightened volatility and bearish pressure. CIEN rose 5.47% premarket after confirming its S&P 500 inclusion, driven by AI infrastructure demand and 24% revenue growth guidance.

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