By Reinhardt Krause

Rubrik (RBRK) stock traded sideways after the data storage and security software firm reported a narrower-than-expected first-quarter loss. Also, revenue topped expectations and the company's July-quarter outlook came in above views.

Rubrik reported earnings after the market close on Thursday. In the quarter ending April 30, Rubrik  lost 15 cents per share vs. a $1.58 loss a year earlier. Wall Street analysts that follow Rubrik stock had estimated a loss of 32 cents per share. Rubrik said revenue rose 49% to $278.5 million, topping estimates of $260 million.

Rubrik sells a cloud-computing-based data backup and recovery platform aimed at protecting companies from ransomware attacks. About 85% of Rubrik's revenue comes from subscription software sales.

Rubrik Stock: ARR Key Metric

For Rubrik, Wall Street views subscription-based annual recurring revenue as a key financial metric.

In Q1, Rubrik reported subscription-based ARR of $1.18 billion, up 38% and topping a consensus of $1.16 billion.

As of April 30, Rubrik had 2,381 customers with subscription ARR of $100,000 or more, up 28% year over year.

For the July quarter Rubrik forecast revenue of $282 million at the midpoint of guidance vs. estimates of $273 million.

Heading into the earnings report, Rubrik stock had advanced 48% in 2025. Shares traded flat in extended trading, last down a fraction at 98.10.

Rubrik's initial public offering in 2024 raised over $750 million, with shares priced at 32.

Founded in 2014, Rubrik's investors include Microsoft (MSFT).

Follow Reinhardt Krause on Twitter @reinhardtk_tech for updates on artificial intelligence, cybersecurity and cloud computing.

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