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TBBTrade · ResearchSoftwareNASDAQ NMS - GLOBAL MARKETCompany profile
$16.41+3.80%as of Oct 23, 2026, 4:00 PM ET

ARQQ — Arqit Quantum Inc.

UK-originated quantum encryption company (public via SPAC 2021, listed Nasdaq: ARQQ); develops QuantumCloud, a satellite-based symmetric key agreement platform for quantum-safe communications — does not require a QKD photon channel but delivers quantum-strength encryption through a software-defined key service.

Descriptive indicators · experimental heuristics, not validated investment signals. Missing inputs remain unscored.

Coiled

0

52-week range position; a volatility proxy

Watched

8

7-day news volume + tape quietness

Sound

50

Margins, growth, FCF composite

Mapped concentration

81

Highest published layer score; may describe a minor business line

Heuristic composite

36

Gross margin

—

Descriptive only

Numbers on the wire.

Market cap

$286M

P/E (TTM)

—

P/S (TTM)

262.96

EV / EBITDA

—

Gross margin

—

Op margin

-5,011.51%

Net margin

-4,715.38%

FCF margin

—

Rev growth YoY

350.62%

EPS growth YoY

—

ROE

-183.74%

ROA

-129.50%

Debt / Equity

0.08

Current ratio

4.88

Price / Book

7.28

Beta

3.02

Arqit's QuantumCloud offers a network-agnostic quantum-safe key distribution layer targeted at governments, telecoms, and critical infrastructure. Approach sidesteps the fiber/free-space distance limits of traditional QKD by using a cloud-brokered symmetric key protocol. Revenue is still nascent (government pilot contracts); differentiation from NIST PQC algorithms is contested by some cryptographers. Risk: extremely small revenue base, ongoing cash burn, and debate over whether QuantumCloud constitutes true QKD or a classical symmetric-key wrapper.

From the tape.