Ciena Corp (CIEN)

CIEN's stock fell 10.76% following the disappointing guidance of the third-quarter and full-year revenues. Despite exceeding expectations for the second quarter, CIEN only expected $1 billion to $1.08 billion in the third-quarter revenue, below Wall Street's prediction of a $1.1 billion, and 18% to 22% increase in full-year sales, lower than its previous guidance of 20% to 22%.

https://www.fool.com/investing/2023/06/06/why-ciena-stock-crashed-on-tuesday/