The stock dropped to $22.70 as of early afternoon and is now down 81% from its high in March, a selloff that's wiped out about $57 billion of market cap.
Super Micro had its worst week on the market on record last week after the resignation of its auditor, Ernst & Young, the second accounting firm to bow out in under two years. The company faces accusations from an activist of accounting irregularities and that it's shipped sensitive chips to sanctioned nations and companies, violating export controls.