Shares of Super Micro Computer (SMCI) rose 28% on Monday after the server maker said an independent review of its business found no evidence of fraud or wrongdoing.

The company, which is working with Nvidia (NVDA) to equip high-tech servers with its AI chips, also said it would look for a new chief financial officer based on the recommendations of the special committee conducting the review. Current CFO David Weigand will remain in this position until his successor is appointed.

Super Micro said the review took more than three months and conducted 68 witness interviews of current and former employees, management, consultants and board members.

“The evidence reviewed by the special committee does not raise any material concerns about the integrity of the company’s management or audit committee or their commitment to ensuring that the company’s financial reports are materially accurate,” the company said in a filing to the SEC.

Shares of the artificial intelligence-based high-flyer have been on a roller coaster ride after a report from short seller Hindenburg Research in August alleged, among other things, “accounting manipulation” at the company.

Following the report, Super Micro announced that it would postpone the release of its annual report. Then, in October, accounting firm Ernst & Young resigned, saying it was “unwilling to be associated with the financial reports prepared by management,” the resignation letter said.

Monday’s filing said the select committee does not believe EY’s conclusions “are supported by the facts uncovered by the select committee or the findings set out in the select committee’s report.”

Last month the company announced it had hired a new auditor, BDO. It also submitted a compliance plan to the SEC to prevent delisting from Nasdaq.

The stock has gained more than 100% since hitting its 52-week low on November 15. Shares are up about 39% since the start of the year.

On Monday, analysts at JPMorgan (JPM) said they maintain an Underweight rating on the stock until there is more insight into the company’s compliance.

“In our view, the next key points of observation for investors to keep in mind include: 1) whether the new independent auditors, BDO, accept the findings of the special committee or decide to conduct their own independent review; and 2) whether Nasdaq supports Super Micros.” “We have requested a deadline extension to return to compliance with Nasdaq’s continuous listing requirements,” the analysts wrote.

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