Top Wall Street analysts changed their outlook on these top names. For a complete view of all analyst rating changes, including upgrades, downgrades and initiations, please see our analyst ratings page.

• B of A Securities analyst Tal Liani upgraded Ciena Corp (NYSE:CIEN) from Neutral to Buy and raised the price target from $260 to $355. Ciena shares closed at $299.30 on Thursday. See how other analysts view this stock.
• Piper Sandler analyst Clarke Jeffries upgraded Karman Holdings Inc (NYSE:KRMN) from Neutral to Overweight and boosted the price target from $110 to $127. Karman shares closed at $97.14 on Thursday. See how other analysts view this stock.
• Baird analyst Daniel Moore upgraded Union Pacific Corp (NYSE:UNP) from Neutral to Outperform and lifted the price target from $239 to $311. Union Pacific shares closed at $260.20 on Thursday. See how other analysts view this stock.
• BMO Capital analyst Keith Bachman upgraded Okta Inc (NASDAQ:OKTA) from Market Perform to Outperform and raised the price target from $83 to $97. Okta shares closed at $79.65 on Thursday. See how other analysts view this stock.
• B of A Securities analyst Vivek Arya upgraded Marvell Technology Inc (NASDAQ:MRVL) from Neutral to Buy and raised the price target from $90 to $110. Marvell Technology shares closed at $75.68 on Thursday. See how other analysts view this stock.

Considering buying CIEN stock? Here’s what analysts think:

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