Another upgrade for Vicor's revenue guidance made its stock enticing to investors on Thursday.

Shares of Vicor rose 12% to $322.55, while the Nasdaq Composite added 0.4%. The stock has surged 194% this year and is up 560% over the last 52 weeks, according to Dow Jones Market Data.

The power electronics company raised its sequential revenue guidance for the fiscal third quarter to more than 30%, up from prior guidance of more than 20%, Vicor said in a news release on Wednesday. Vicor said it received more royalty revenue than expected from an artificial-intelligence customer licensing its power-delivery technology.

It didn't take long for Vicor to raise its earlier forecast. The company announced last week it would double its sequential revenue growth guidance, raising its projections from 10% to more than 20%.

CEO Patrizio Vinciarelli said at the time that Vicor had secured licensing agreements with "four leading companies," which included a mix of hyperscalers and original equipment manufacturers, for its patented power technology, known as Vertical Power Delivery.

Vinciarelli, who did not disclose the clients, said they approached Vicor after realizing their use of unlicensed power delivery components put their AI computing systems at risk of import bans and patent infringement litigation.

Vicor raised its fiscal second-quarter revenue guidance to $142 million from $126 million in May, citing higher product revenue and royalties from an undisclosed new license.