On May 20, Onto Innovation rose 5.03% in regular trading, trading at $259.1 USD/share, with trading volume of approximately $172 million. The rebound follows a two-day selloff exceeding 10% triggered by the company's announcement of an $1.1 billion convertible senior notes offering due 2031.

On the news front, the semiconductor equipment sector staged a broad recovery, with Lam Research up 5.62%, ASML up 5.22%, KLA up 4.0%, and Applied Materials up 3.86%, providing strong sector tailwinds for the stock's technical bounce. Additionally, fundamental support remains intact as the company's Q2 revenue guidance of $320 million to $330 million came in approximately 8% above analyst consensus expectations, limiting further downside despite dilution concerns from the convertible notes issuance and the $165 million additional purchase option granted to initial buyers.

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