Super Micro’s stock rose 3000% in the AI wave — then its auditor quit, saying it doesn’t trust the management

Charles Liang, chief executive officer of Super Micro Computer Inc., during the Computex conference in Taipei, Taiwan, on Wednesday, June 5, 2024. · Fortune · Annabelle Chih/Bloomberg via Getty Images

In This Article:

Silicon Valley tech company Super Micro was supposed to be riding high: After flying under the radar for a quarter of a century, the company had ridden the coattails of the recent generative AI boom. The $20 billion manufacturer builds some of the most important hardware used to power the top artificial intelligence models–that is, high-performance servers that house the leading AI chips, including Nvidia’s.

Over the past five years, as the AI boom picked up steam before exploding post-ChatGPT, Super Micro’s shares soared over 3,000% and its reported revenue doubled to $7.12 billion, to earn it a glitzy debut on the Fortune 500. But accounting issues have continued to haunt the company: It settled with the Securities & Exchange Commission in August 2020 over two years' worth of alleged accounting violations, and then in 2024 short-seller Hindenburg Research claimed Super Micro continued to engage in questionable accounting practices.

And now, things just got even more real. Super Micro's auditor resigned in the midst of its work with the tech firm, a move generally considered to be one of the reddest of red flags in the financial and investment community. And after Super Micro broke that news to investors, auditor Ernst & Young came back with a World Series grand slam rebuttal.

In a letter to the regulators, EY said it only agreed with the company’s disclosures in the first paragraph, the first sentence of the second paragraph, the third paragraph, the first three sentences of the fourth paragraph, and a few others. That’s it.

“We have no basis to agree or disagree with other statements of the registrant contained therein,” EY wrote to SEC commissioners.

For investors, those can be read as fighting words. Super Micro’s stock tumbled 33% on Wednesday.

Governance expert and Georgetown University associate professor Jason Schloetzer told Fortune this type of resignation is unusual and is consistent with a “noisy withdrawal.”

"It’s pretty clear there are irreconcilable differences between management and the auditor that are severe enough to spill into the public domain," said Schloetzer. "An auditor resignation is already in red flag territory, so this one will certainly get close scrutiny from capital markets participants and regulatory agencies. Management will have some explaining to do."

What went down at Super Micro?

The auditor’s response was prompted by the disclosure Super Micro made this week announcing EY’s departure. Critically, Super Micro told investors it “does not currently expect that resolution of any of the matters raised by EY, or under consideration by the Special Committee, as noted below, will result in any restatements of its quarterly reports for the fiscal year 2024 ending June 30, 2024, or for prior fiscal years.” Generally, Super Micro’s disclosure that they don’t think these concerns will prompt them to correct their financials is meant to soothe investors that are skittish about potential accounting problems.