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CIEN

Ciena Corporation

latest move
+12.34%
2026-10-08
20 sessions · 2026-07-17 → 2026-10-08 · avg 12.41% · largest 26.90%

Ciena is a global leader in optical networking systems, advanced routing, and automation software, providing data center interconnects for AI workloads.

Price history

stitched from the price window carried by each report

Every session it moved

newest first
2026-10-08Bullish
+12.34%weekly change

Shares surged in a sympathy rally following Marvell Technology's bullish AI interconnect market forecasts at its Investor Day.

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2026-10-07Bullish
+26.90%weekly change

Shares surged after peer Marvell's strong interconnect forecast and Nokia's comments on AI bandwidth constraints.

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2026-10-06Bullish
+13.85%24 hours change

Shares surged on institutional buying in AI optical hardware, driven by sell-side price target upgrades and strong Q3 results.

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2026-10-05Bullish
+13.22%weekly change

Bullish sell-side analyst re-ratings highlighted Ciena's optical networking solutions as essential for next-gen AI data center clusters.

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2026-10-01Bullish
+7.77%24 hours change

Ciena stock surged following bullish analyst upgrades from Bernstein and Evercore ISI and a live 1.6 Tbit/s network transmission milestone.

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2026-09-22Bullish
+14.49%weekly change

The stock rallied after Ciena issued strong multi-year financial guidance at its Investor Forum, driving Wall Street upgrades.

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2026-09-21Bullish
+14.49%weekly change

Ciena surged following ambitious FY2029 targets, an Evercore ISI upgrade to $550, and a major subsea optical deal.

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2026-09-07Bearish
-15.18%weekly change

Shares fell after Q3 earnings due to softer Q4 gross margin guidance, high customer concentration, and supply-constrained backlog delays.

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2026-09-04Bearish
-15.18%weekly change

Ciena dropped as weak Q4 margin guidance and supply constraints overshadowed a strong Q3 earnings beat.

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2026-09-03Bullish
-10.36%24 hours change

The stock fell as supply chain bottlenecks capped revenue growth and Q4 gross margin guidance missed, despite strong Q3 earnings.

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2026-09-02Bullish
-12.34%weekly change

Shares fell 12.34% due to an analyst price target cut, pre-earnings de-risking, and a sector-wide optical networking pullback.

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2026-09-01Bullish
-5.87%24 hours change

B. Riley Financial cut Ciena's price target to $413 alongside pre-earnings de-risking and optical component supply chain concerns.

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2026-08-28Bullish
-5.35%24 hours change

The stock dropped due to pre-earnings de-risking, supply chain bottleneck concerns, a sector sell-off, and recent insider share sales.

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2026-08-24Bullish
-6.02%24 hours change

Shares fell due to pre-earnings institutional de-risking, analyst price target cuts, and supply chain backlog concerns.

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2026-08-18Neutral
-8.90%24 hours change

The stock fell due to a TD Cowen price target cut, rising U.S. Treasury yields, and disclosures of executive insider share sales.

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2026-08-17Bullish
+14.83%weekly change

The stock surged due to strong earnings from peer Lumentum, a Wall Street upgrade, and a record $7.7 billion order backlog.

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2026-08-12Bullish
+11.49%24 hours change

The stock surged following strong earnings from supplier Lumentum, a Wall Street analyst upgrade, and new optical contract wins.

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2026-08-10Bullish
-5.99%24 hours change

Ciena shares fell due to sector-wide profit-taking, stretched valuations, insider selling, and de-risking ahead of Q3 earnings.

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2026-07-20Bullish
-14.97%weekly change

The stock fell due to a sector-wide sell-off driven by hyperscaler capex anxieties, profit-taking, and insider sale disclosures.

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2026-07-17Bullish
-18.73%weekly change

Concerns over a hyperscaler optical upgrade slowdown and executive insider selling disclosures triggered a sector-wide sell-off.

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