With a market capitalization (market cap) of $1.24B — a measure of how much the company is worth — Quantum Corporation ranks #2,371 among the 2,510 companies tracked, and 377th in Technology as of September 29, 2026. Shares trade at $31.40, down 0.88% on the day.
of 2,510 tracked
Market-cap change uses historical capitalization records. Share-price returns are a different series — they can diverge when the share count changes. Those returns are not a CAGR until you pick a start value, an ending value, and years. CAGR calculator. Market cap vs. stock price.
Year-end values and the chart both come from historical market-cap records, not from applying today's share count to past prices. Latest historical observation September 28, 2026. Ranking headline cap is the snapshot figure as of September 29, 2026.
| Year | As of | Market cap | Annual change | Year-end close |
|---|---|---|---|---|
| 2026 | Sep 28, 2026 | $690.42M | +638.38% | $31.40 |
| 2025 | Dec 31, 2025 | $93.51M | -65.51% | $6.45 |
| 2024 | Dec 31, 2024 | $271.14M | +710.91% | $53.92 |
| 2023 | Dec 29, 2023 | $33.44M | -66.93% | $6.98 |
Ranking figure $1.24B as of September 29, 2026.
Quantum Corporation's ranking market cap is the provider-reported capitalization on the same snapshot as the rest of this site, with a share price of $31.40 as of September 28, 2026. Charts and the year-end table use a separate historical market-cap series, last observed at $690.42M on September 28, 2026. See how the ranking works.
The ranking snapshot ($1.24B as of September 29, 2026) is FMP company-screener market cap. The historical observation ($690.42M on September 28, 2026) is FMP historical-market-capitalization for the same ticker. The live quote market cap agrees with the ranking snapshot. This page does not replace one series with the other.
Live shares outstanding are not on the quote used for price, so this page does not invent a current share count. Shares outstanding vs. float.
The latest annual report (FY 2026) used a weighted-average 12,674,000 shares. That figure is an average for the year, not the live count in the market-cap formula.
Multiplying the latest price by those FY 2026 weighted-average shares would give about $397.96M. The ranking uses the provider's reported market cap instead, which reflects a current share count rather than that annual average.
Book equity: assets minus liabilities on the latest annual report.
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FY 2026 net worth
Largest U.S.-listed names in the same FMP sector — not a hand-picked competitor set.
| Rank | Company | Market cap | 1D |
|---|---|---|---|
| #1 | NVIDIA Corporation NVDA | $5.54T | +1.68% |
| #2 | Apple Inc. AAPL | $4.97T | -0.78% |
| #4 | Microsoft Corporation |
Quantum Corporation is a global technology provider, delivering specialized solutions for the storage and management of digital video and various forms of unstructured data across the Americas, Europe, the Middle East, Africa, and the Asia Pacific. The company's offerings include: CatDV, a robust platform for media asset management (MAM) that streamlines workflows, automates processes, and enhances collaboration for organizations handling large volumes of digital media.
Summary from the company profile (Financial Modeling Prep). Principal financial figures above are for FY 2026.
Visit websiteAs of September 29, 2026, Quantum Corporation (QMCO) is worth $1.24B — that is its market capitalization, the total value of its outstanding shares on MarketCapLens.
A company’s net worth is its shareholders’ equity: assets minus liabilities on the balance sheet. That is book equity, not market cap. For FY 2026, Quantum Corporation’s book equity is about $-198.86M. Market cap is the market value of the outstanding shares. As of September 29, 2026, its market cap is $1.24B. Book equity is an accounting remainder; market cap is a trading value. Neither is a person’s net worth.
Quantum Corporation ranks #2,371 among the 2,510 companies tracked on MarketCapLens. In Technology it ranks #377 of 390.
Fundamentals are annual. Figures labeled with their fiscal year. Live ratios use the current price against those annual earnings.
Over the past year, market cap and share price moved by different amounts. Share count can change independently of price. What changes market cap.
| 2022 |
|---|
| Dec 30, 2022 |
| $101.1M |
| -69.64% |
| $21.80 |
| 2021 | Dec 31, 2021 | $332.97M | — | $110.40 |
|---|
Last observation of each calendar year from historical market-cap records. The current year is through the latest date, not a completed year-end. Share-price close is the matching session for context — we do not rebuild cap from today's share count.
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FY 2026
| $3.78T |
| -1.35% |
| #6 | Taiwan Semiconductor Manufacturing Company Limited TSM | $2.35T | +0.50% |
| #9 | Broadcom Inc. AVGO | $1.66T | -0.92% |
| #11 | SK hynix Inc. SKHY | $1.29T | -5.03% |
Companies immediately above and below in the overall ranking. They may be in a different sector.
| Rank | Company | Market cap | 1D |
|---|---|---|---|
| #2368 | Shoals Technologies Group, Inc. SHLS | $1.24B | -0.67% |
| #2369 | Gold.com, Inc. GOLD | $1.24B | -2.50% |
| #2370 | Lucid Group, Inc. LCID | $1.24B | -4.18% |
| #2372 | Bicara Therapeutics Inc. Common Stock BCAX | $1.24B | -2.13% |
| #2373 | Dole plc DOLE | $1.24B | 0.00% |
| #2374 | Borr Drilling Limited BORR | $1.23B | -4.64% |
Quantum Corporation’s ranking market cap of $1.24B comes from the same snapshot as the rest of this site, as of September 29, 2026. It is not share price multiplied by the FY 2026 weighted-average share count of 12,674,000. The ranking snapshot ($1.24B as of September 29, 2026) is FMP company-screener market cap. The historical observation ($690.42M on September 28, 2026) is FMP historical-market-capitalization for the same ticker. The live quote market cap agrees with the ranking snapshot. This page does not replace one series with the other.
Over the past year, Quantum Corporation’s market cap is up 525.34%, using historical market-cap records rather than today’s share count applied to past prices.
Quantum Corporation (QMCO) shares trade at $31.40, down 0.88% on the day, as of September 29, 2026.
Live P/E is share price divided by annual earnings per share. It is blank when earnings are missing, zero, or negative — not a 0× multiple.