Quantum

2 serious warning signs in Quantum’s filings.

We look for five warning signs: doubt it can keep going, weak checks on its own accounts, a notice that its past accounts can't be relied on, a change of auditor, and one customer bringing in a big share of sales. We don't check lawsuits, investigations or debt yet.

We checked the auditor's report, internal controls, restatement notices, auditor changes and big customers in the 10-K filed 25 Jun 2026, plus the 10-Q filed 11 Aug 2026 and 5 later 8-Ks.

• Weak checks on its own accounts

  Serious

  The company said its checks on its own accounts did not work at the end of its latest quarter. Mistakes could slip into the numbers.

  “Based on this evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were not effective due to material weaknesses in internal control over financial reporting described below.”

  Show the full paragraph

  Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934 (the “Exchange Act”), as of the end of the period covered by this Quarterly Report. Based on this evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were not effective due to material weaknesses in internal control over financial reporting described below.

  From the 10-Q filed 11 August 2026, Part I, Item 4. Controls and Procedures. Read it in the filing

• Its past accounts can't be relied on

  Serious

  It told the SEC its earlier accounts should no longer be relied on, usually because they contained errors.

  8-K Item 4.02 filed 8 Aug 2025: the company said its earlier financial statements should no longer be relied on.

  From an 8-K filed 8 August 2025: Previously issued accounts should no longer be relied on. Open the filing

• Changed auditor

  Worth knowing

  The company changed its auditor (the firm that checks its books) in the last two years.

  “As a result of this process and following careful deliberation, on September 30, 2025 , the Audit Committee dismissed Grant Thornton LLP (“Grant Thornton”) as the Company's independent registered public accounting firm, effective as of that same date.”

  From an 8-K filed 6 October 2025: Change of auditor. Read it in the filing

• Sales have shrunk: 4.4% a year.
• It owes more than it owns on paper (negative equity). Often that's from borrowing to buy back shares.

Whether the price already reflects the risks is what the deep dive is for.