What is QMCO's market cap?

$660.91M, based on the Nov 4 close of $16.77.

Does Quantum pay a dividend?

No regular cash dividend has been paid in the last year.

How much of QMCO is sold short?

3.1M shares, 14.1% of float, as of Oct 15, 2026.

What sector is QMCO in?

Technology, in the Computer Storage Devices industry.

NASDAQ · QMCOTechnologyComputer Storage Devices

Quantum Corporation (QMCO)

$16.77−5.09%

Close Nov 4, 2026 · split-adjusted

Nov 4, 2026$16.77▲ 97.53% in range

Nov 4, 2025Low $4.31 · High $34.50Nov 4, 2026

What changed · written from our data

As of Nov 4, 2026

Quantum closed at $16.77 on Nov 4, down 5.09%, 51.4% below its 52-week closing high. Volume of 897.3K shares was 0.56× its 20-day average (below normal).

Split-adjusted performance: -49.9% over one month, +67.2% over six months, +78.6% over one year.

In the quarter ended Jun 30, 2026, revenue was $80.80M, up 25.7% from a year earlier, with a net margin of -192.2%.

Short interest was 3.1M shares at the Oct 15 settlement, down 1.6% from the prior report (14.1% of float, 1.6 days to cover).

Market cap$660.9M39.4M shares

Revenue · quarter$80.8M+25.7% YoY

Diluted EPS$-7.06—

P/E · TTM—P/S 2.2×

Net margin-192.2%Gross 39.3%

Dividend yieldNone

52-week range4.31 – 34.50−51.4% from high

Volume897.3K0.56× 20-day avg

Volatility · 60d99.6%Annualised

Short % of float14.1%1.6 days to cover

Net cash$54.4MCash $54.4M

Next earnings—Not scheduled

Split-adjusted performance

1W −19.1%1M −49.9%3M +43.6%6M +67.2%YTD +160.0%1Y +78.6%3Y +84.4%5Y −84.4%

Earnings reactions

History →

No reported quarters with price history yet.

Rank within Computer Storage Devices

Percentile among 6 companies (100 = best)

6-month momentum—

Revenue growth—

Net margin—

Value (low P/E)—

Size—

Industry medians: 6-month return −26.4%, revenue growth +55.5%, net margin 29.6%, P/E 19.1×.

Short interest

Details →

Shares short3.1M−1.6% vs prior

Days to cover1.6Settled Oct 15

% of float14.1%

Short vol. 10d50.3%of daily volume

Closest peers by size in Computer Storage Devices

Company	Price	Today	6M	Rev. growth	Net margin	P/E	Mkt cap
QMCOQuantum	$16.77	−5.09%	+67.2%	+25.7%	−192.2%	—	$660.9M
NTAPNetApp	$187.67	−1.63%	+68.0%	+29.9%	18.5%	26.0	$36.86B	Compare
PEverpure	$111.77	−5.00%	—	—	6.3%	—	$37.24B	Compare
WDCWestern Digital	$323.83	−6.77%	−33.0%	+55.5%	40.6%	12.2	$121.22B	Compare
STXSeagate Technology Holdings	$557.06	−8.13%	−29.2%	+61.0%	41.6%	29.1	$127.88B	Compare
SNDKSandisk	$1,037.40	−7.91%	−26.4%	+377.9%	73.4%	7.6	$147.61B	Compare

News about Quantum

All news →

Should You Buy, Hold or Sell Quantum Stock Before Q2 Earnings Release?Zacks Investment Research · 19h agoNeutral Quantum Corp. (QMCO) Reports Next Week: Wall Street Expects Earnings GrowthZacks Investment Research · 2d ago▲ Positive Quantum vs. NetApp: Which Data Storage Stock is the Better Buy?Zacks Investment Research · 5d agoNeutral Quantum Builds ActiveScale Momentum: Can It Sustain Growth?Zacks Investment Research · Oct 13, 2026▲ Positive Quantum Corp. (QMCO) is a Great Momentum Stock: Should You Buy?Zacks Investment Research · Oct 7, 2026▲ Positive

Quick answers

What does Quantum do?: Quantum Corp is a United States-based company that delivers end-to-end data management solutions designed for unstructured data in the era of artificial intelligence (AI). It provides comprehensive and cost-efficient solutions for the entire data lifecycle.
What is QMCO's market cap?: $660.91M, based on the Nov 4 close of $16.77.
Does Quantum pay a dividend?: No regular cash dividend has been paid in the last year.
How much of QMCO is sold short?: 3.1M shares, 14.1% of float, as of Oct 15, 2026.
What sector is QMCO in?: Technology, in the Computer Storage Devices industry.

About Quantum

Quantum Corp is a United States-based company that delivers end-to-end data management solutions designed for unstructured data in the era of artificial intelligence (AI). It provides comprehensive and cost-efficient solutions for the entire data lifecycle. The group provides solutions for video, images, audio, and other large files because this unstructured data represents. Its portfolio of products includes primary storage software and systems, secondary storage software and systems, as well as devices and media. The group operates in three geographic regions: Americas, Europe, the Middle East, and Africa (EMEA), and Asia Pacific (APAC).

HQ: San Jose, CA490 employeesListed Dec 10, 1982quantum.com

Sources: Massive / Polygon daily aggregates (split-adjusted) · SEC filings via Massive · FINRA settlements via Massive · Financial Modeling Prep. Figures are dated where shown; research is informational, not investment advice. Methodology