Analyst note · Encryption
Arqit Quantum Encryption
Post-quantum cryptography pure-play — bets symmetric key agreement beats NIST PQC algorithms in enterprise procurement.
Post-quantum cryptography pure-play — bets symmetric key agreement beats NIST PQC algorithms in enterprise procurement.
— Ledger Desk · analyst thesis
Bull case
▲ upsidePure exposure to the post-quantum crypto tailwind (NIST PQC, CNSA 2.0, harvest-now-decrypt-later) without the capital intensity of building qubits. H1 FY26 revenue grew 1,000%+ from a tiny base. HC Wainwright maintains Buy at $60 PT (~4× upside from spot). Should rerate as PQC moves from policy to procurement in 2026/27.
Bear case
▼ downsideSymmetric key agreement is a contested approach vs NIST-standardized PQC algorithms (ML-KEM, ML-DSA). Revenue remains de minimis years after SPAC. $28.9M cash position requires a raise in 18 months into a stock down ~75% from highs. Not actually a quantum computing company — it's quantum-safe encryption, which is a different (but adjacent) market.
Ledger Score · Arqit Quantum
The Ledger reads sceptical
Quantum-safe encryption (PQC layer), not quantum compute — different category than the rest of the cohort.
Quantum-safe encryption (PQC layer), not quantum compute — different category than the rest of the cohort.
Technology
28
Capital
35
Commercial
12
Government
20
Components are independently scored and weighted. See methodology.
A profile is a snapshot of an argument, not a verdict. The Ledger updates the score nightly; the thesis we revisit only when the facts change.
— analyst-note conventions