By Max A. Cherney, Deborah Mary Sophia

SAN FRANCISCO (Reuters) -Chip designer Arm Holdings on Wednesday forecast revenue in line with Wall Street targets, sparking a 4.5% drop in shares that some analysts attributed to dashed hopes for stronger, AI-fueled growth.

Bets that Arm, which licenses its designs, will benefit from a surge in AI computing have more than doubled the chip designer’s share price since its initial public offer last September, giving it a market value of about $144 billion. Its forecast, however, failed to live up to expectations set by companies like AMD and Nvidia that directly design AI chips.

“Arm’s done a good job of associating themselves with some of these AI semiconductor trends and the challenge is because they’ve done that, they’ve created expectations perhaps that aren’t quite being met yet," said Bob O'Donnell, president and chief analyst at TECHnalysis Research. "They're several steps removed from the final chips," he added.

Arm results topped revenue and profit expectations for the second quarter on Wednesday, in part because customers like Apple are using a more profitable version of its next-generation technology.

However, for the current fiscal third quarter, Arm forecast revenue in a range between $920 million and $970 million, with a midpoint of $945 million, compared with an average analyst estimate of $944.3 million, according to LSEG data.

The company said it expects fiscal third-quarter earnings of between 32 cents and 36 cents per share. Analysts had expected a third-quarter profit of 34 cents a share.

"Investors want to see the current AI boom in its results," said Kinngai Chan, senior research analyst at Summit Insights Group.

"This quarter is all about the validation of the strategies we've been talking about," Chief Executive Rene Haas told Reuters in an interview. "We've got some real proof points."

Arm derives revenue from licensing fees for its chip designs and collects a royalty for each chip sold that uses its technology. The company is in the midst of introducing its v9 architecture, which is expected to generate higher royalty payments.

Arm's designs power nearly every smartphone in the world, and it has attempted to make headway in data centers and other markets. It has developed a number of pre-built designs that enable customers to build chips more quickly and has doubled the number of pre-built design licenses this fiscal year, the company said.

Haas said the company has signed up its first smartphone chip customer for its premade blueprints. Arm has previously sold those designs to server chip designers.