Arqit Quantum Inc vs Five9 Inc — how do they compare? Arqit Quantum Inc trades at $24.01 (market cap $414.00M), while Five9 Inc trades at $33.51 (market cap $2.33B). The key difference: Five9 Inc is far larger — about 5.6× Arqit Quantum Inc's market cap, and Five9 Inc is trading nearer its 52-week high, Arqit Quantum Inc nearer its low. Which is the better fit depends on your goals.
| ARQQ | FIVN | |
|---|---|---|
Market Cap | $414.00M | $2.33B |
Sector | Technology | Technology |
52-Week High | $58.27 | $34.48 |
52-Week Low | $11.78 | $13.61 |
Enterprise Value | $387.32M | $2.48B |
Signals from Pluang's Aura AI — not financial advice
ARQQ trades at $23.72, up 4.91% today, with a bullish technical signal from moving averages despite overbought RSI readings. The company shows explosive revenue growth but deep losses, with a P/S ratio of 352.9 reflecting high growth expectations. Recent news highlights a proof-of-concept with nLighten and strong H1 2026 revenue growth of 829% year-over-year, signaling commercial traction in quantum-safe encryption.
Outlook hinges on scaling revenue to offset high costs, with analyst sentiment split evenly between Buy and Hold. Key risks include sustained cash burn and competitive pressure, but government and telecom deals offer upside if execution improves.
Five9 (FIVN) trades at $31.14, down 9.69% today but remains near its 52-week highs. The stock shows strong technical momentum with bullish moving averages and has consistently beaten earnings estimates in recent quarters. Revenue growth accelerated to 10% in Q2 2026, reaching $312.4 million, while the company maintains a solid gross margin of 54.91%. Recent management appointments and AI-driven subscription growth provide positive catalysts.
The outlook remains positive with 61% analyst buy ratings and a $32.67 consensus target offering 5% upside. However, elevated valuation multiples (P/E 47.99) and ongoing fiduciary investigations pose risks. The stock's trajectory depends on continued execution of AI revenue growth and margin expansion targets.
Trailing returns across standard periods
Arqit Quantum provides advanced cybersecurity software that uses symmetric key agreement technology. Its solutions protect networked devices and data against current and future cyber threats, including quantum attacks.
Read more on ARQQ →Five9 provides cloud-native contact center software that enables digital customer service, sales, and marketing engagement. The company's Virtual Contact Center platform combines core telephony functionality, omnichannel engagement capabilities, and various software modules into a unified cloud contact-center-as-a-service, or CCaaS, platform. Five9's artificial intelligence and automation portfolio supplements and enhances the firm's core CCaaS offerings, including solutions for digital self-service, agent assist technology, and workflow automation. Five9 also offers workforce optimization products that optimize call center efficiency through workforce management solutions, manage interaction quality, and track agent performance.
Read more on FIVN →