Super Micro Computer (SMCI) stock fell over 18% Wednesday after the artificial intelligence server maker's outlooks for earnings and sales in the current quarter missed Wall Street's estimates.

Additionally, Super Micro still hasn't filed its 10-K annual report, which it initially pushed back on Aug. 28. The company said it "remains unable at this time to predict when the Form 10-K will be filed."

The company said late on Tuesday that it expects adjusted earnings per share of $0.56 to $0.65 in its fiscal second quarter, below consensus estimates of $0.80, per Bloomberg data. Meanwhile, its forecast for net sales in a range of $5.5 billion to $6.1 billion was weaker than the $6.79 billion Wall Street had expected.

"Certainly, it looks like revenues aren't where they wanted them to be, either for the quarter they just reported or moving forward at the same time," Wedbush Securities equity research analyst Matt Bryson told Yahoo Finance.

Bryson added that uncertainty on who Super Micro will hire as its next auditor or when it will be able to file its 10-K annual filing remains a headwind for the stock.

"There's a whole lot of unknown here," Bryson said.

The earnings came less than a week after accounting firm Ernst & Young resigned as Super Micro's auditor. EY said in a filing it was "unwilling to be associated with the financial statements prepared by management."

Super Micro responded to EY's claims on Tuesday with a response from an independent special committee that had been investigating them.

"Following a three-month investigation led by Independent Counsel, the Committee’s investigation to date has found that the Audit Committee has acted independently and that there is no evidence of fraud or misconduct on the part of management or the Board of Directors," it said in a release. "The Committee is recommending a series of remedial measures for the Company to strengthen its internal governance and oversight functions, and the Committee expects to deliver the full report on the completed work this week or next."

EY's resignation came two months after a short report from Hindenburg Research alleged, among other things, "accounting manipulation" at the artificial intelligence highflier.

The stock rallied earlier in the year as investors cheered SMCI's prospects in the AI data center space; however, shares are now down more than 60% over the past six months.

In August, Hindenburg said its three-month investigation "found glaring accounting red flags, evidence of undisclosed related party transactions, sanctions and export control failures, and customer issues." The firm also disclosed it had taken a short position in Super Micro.