QUARTIX TECHNOLOGIES PLC (QTX) — Investment Research Note

Executive summary

Quartix is a UK-based vertical SaaS provider of subscription vehicle telematics for small-and-medium fleets, with 333,922 vehicles under subscription across 33,000 customers in six European markets and the US 2026-03 final. Over the five-year window covered, the group has transitioned from an insurance/fleet hybrid with stalled growth into a focused fleet-subscription business with ARR up from £21.9m (end-2020) to £37.0m (end-2025) and accelerating — 14% ARR growth in 2025, the highest on record, with operating profit up 34% on 12% revenue growth 2026-03 final. The single most important point for valuation today is that operating leverage is now visibly inflecting (adj. EBIT margin 24.3% vs. 20.4% restated 2024) while the balance sheet is debt-free with £8.2m cash at Q1 2026 2026-04 trading; the AI angle, however, is thin.

Fair value estimate

• Fair value range: 280p – 340p per share, implying market cap of £136m – £165m.
• Methodology: blended P/E and EV/EBITDA on FY26 consensus. The company itself states market expectations for FY26 are revenue £40.3m, Adj. EBIT £10.1m and FCF £4.7m 2026-04 trading. At a ~23% effective tax rate (in line with 2025 underlying), PAT lands around £7.8m – £8.0m, or ~16p diluted EPS on 48.4m shares. Quality UK vertical-SaaS peers trade in a 17–22x forward P/E band, giving 270p – 350p. EV/EBITDA crosscheck: £14m FY26E EBITDA × 9–11x + £10m net cash → £136m – £164m mcap. Both methods triangulate around £150m.
• Current mcap £126.0m → fair-value midpoint £150m implies ~19% upside, range ~8% to ~31%.
• The stock looks modestly undervalued but not deeply cheap; the bull case requires NRR to push through 100% and operating leverage to continue translating.

Sector context

• ICB classification (Technology / Software & IT Services) is correct: Quartix is a recurring-revenue software business with hardware as a cost item (hardware <3% of sales) 2025-10 trading.
• Quality is above average for AIM Tech: net cash, 73.2% gross margin, 96% recurring revenue, 104% EBITDA-to-cash conversion, low customer concentration (largest client <1% of sales) 2026-03 final. Growth is mid-teens (ARR) — solid but not high-growth SaaS territory.
• Listed peers: Microlise Group (LON:SAAS) — UK fleet telematics, larger fleet focus; Trakm8 (LON:TRAK) — much smaller/distressed; Tracsis (LON:TRCS) and Cerillion (LON:CER) as quality-comparison UK B2B SaaS. International: Powerfleet (NYSE:AIOT), Samsara (much larger US peer).

Investment thesis (3 bullets)

1. Inflecting operating leverage on a 96%-recurring base: 2025 delivered 12% revenue growth, 14% ARR growth and 38% adj. EBIT growth, with EBIT margin expanding from 20.4% to 24.3% 2026-03 final. Cost-of-manufacture reduction from TCSV17 hardware will continue to flow through gross margin in 2026 2025-10 trading, and admin expenses are flat YoY.
2. Fortress balance sheet plus rising dividend signal: net cash rose to £5.6m at end-2025 and £8.2m at Q1 2026; the total 2025 dividend more than doubled to 10p/share, a 3.6% yield at the 2025 close 2026-03 final. Konetik and the 2G/4G overhangs are now resolved or largely funded, so FCF should re-rate higher from 2026 (consensus £4.7m vs. £5.2m delivered in 2025 — albeit with one-off tax timing) 2026-04 trading.
3. International growth tailwind on a fixed UK cost base: 50% of the subscription base is now outside the UK, with Italy (+39% ARR), Spain (+32%), Germany (+45%) growing off small bases through indirect channels operated from the UK 2026-04 trading. The European expansion adds revenue without proportional headcount — ARR/employee already at £208k and rising.

Key risks (3 bullets)

1. FRC restatement signals accounting complexity: the IAS 16 reclassification of tracking units to PPE forced a multi-year restatement of revenue, cost of sales, deferred tax and cash flow geography — a £9.0m increase in opening net assets at 1 Jan 2024 2026-03 final. While the audit opinion is unqualified, the restatement and ongoing dialogue with HMRC over capital allowances suggests bookkeeping is non-trivial.
2. Hardware/network transitions are an ongoing cash drag: 17,000 2G units remain to replace in France by end-2026 (~€1.3m cash) and the UK 2G sunset has been pulled forward to 2029, with the principal SIM supplier shifting timetable 2026-03 final. The 2023 Konetik acquisition was written down to zero within months — capital allocation outside the core has a poor track record.
3. Slowing Q1 2026 customer acquisition: new customers Q1 2026 down 8% YoY, new subscriptions down 13% 2026-04 trading. Management blames a strong prior-year comparator, and ARR/NRR still grew, but it raises the question of whether subscription-base growth (current 11%) can be sustained as the UK matures and US growth stalls (+5% ARR, +1% subs).

Operating leverage

The cost structure is genuinely fixed-heavy: sales & marketing (£8.3m) and admin (£9.1m) total £17.4m, of which the vast majority is fixed-headcount and infrastructure (administrative expenses actually fell 2024→2025 on growing revenue) 2026-03 final. Gross margin is 73.2% and the incremental gross margin on subscription growth is materially higher because the marginal cost of serving an additional vehicle on the existing platform is near-zero (hardware is now treated as PPE depreciating over device life, so cash hardware cost is partially decoupled from incremental recurring revenue). A 10–20% upside to FY26 revenue (i.e. £44–48m vs. £40.3m consensus) on a 73%+ gross margin and largely-fixed overhead would plausibly drop ~£3-£6m to operating profit, meaning a 15% revenue beat could lift EBIT by ~40-60% — meaningful but not the multi-bagger profile of a pure software platform. The fixed-cost base is real but the marginal-vehicle gross margin is constrained by hardware replacement costs (2G/4G transition cycles). The clearest inflection signal: NRR rising from 95.7% to 98.1% with a 4.2% pricing indexation now embedded across the base 2026-03 final. Once NRR exceeds 100% (management's stated target), every existing customer becomes incremental profit growth.

Value-trap signals

• None identified. The dividend is rising (2.5x cover at 10p paid on 13.18p EPS), revenue is accelerating, the balance sheet is fortress (£8.2m net cash, no debt), and there are no related-party transactions, going-concern flags, or material customer concentration. The FRC restatement is a yellow flag but not a value trap — the underlying cash generation is unchanged and was simply reclassified between operating and investing.

Earnings vs. expectations

Looking across 11 trading updates and 5 results announcements, the pattern is consistent: management guides conservatively, then beats. Examples — H1 2025 came in slightly ahead of guidance (£3.5m PBT vs. £2.7m guided revenue/EBITDA narrative) 2025-07 interim; the Oct-2025 update raised expectations again and the FY25 trading update confirmed revenue/EBITDA ahead of market expectations 2026-01 trading; FY25 delivered FCF of £5.2m vs. £4.4m market expectation 2026-03 final. The 2023 trading was below expectations (Konetik write-down, US weakness, France 4G provision) 2024-03 final, but since the founder's return as Chairman in late 2023, every subsequent guide-and-deliver cycle has been a beat or modest raise. Net pattern: more beats than misses, with a markedly tighter beat-discipline since 2024.

Conviction

Conviction: 4 / 5 (high). Anchors: (i) clean recurring-revenue model with multi-year visible ARR ladder makes forward modelling straightforward; (ii) management discloses explicit market expectations for the year ahead in every RNS, so the valuation anchor is unambiguous; (iii) net cash balance sheet removes financing-risk variance from the equity story. Caveats: (i) the IAS 16 restatement reduces comparability with pre-2024 historicals and signals that 2026 numbers could still see further adjustment; (ii) terminal value sensitive to whether NRR can clear 100% — a 2-3 ppt assumption swing meaningfully changes the EV/EBITDA multiple a buyer should pay.

Driver scoring rationale

• AI beneficiary (30): Quartix has proprietary driving-behaviour data on 333k+ vehicles which has some long-term AI training value, but there is no AI-driven revenue line, no AI-uplift to ARPU disclosed, and the only AI mention in 2025/2026 filings is using AI internally for support/centralisation 2026-03 final. This is a quality vertical-SaaS business but it is not a meaningful AI receiver. Score in the LOW band.
• Operating leverage (72): High recurring revenue, 73% gross margin, fixed-cost overhead structure, 2025 EBIT margin expansion of ~400bps on 12% revenue growth. Not pure software (hardware/installation drag on incremental units), so not 80+, but clearly above-average.
• Earnings surprise trend (70): consistent pattern of beats since 2024, multiple guidance raises in 2025/2026.
• Cyclicality (35): SME fleet attrition rose to 13.3% in 2023 (recession-sensitive small businesses) but the subscription-revenue model dampens cyclicality vs. capex-equivalent peers. Moderate-low.
• Moat (50): switching costs from telematics integration, 4.8/5 Trustpilot, no auto-renewal lock-ins (notable), 25-year SIM-supply relationship. But faces commodity competition in core fleet tracking and substitution risk from smartphone-based competitors. Moderate.
• Leverage (5): net cash of £8.2m. Fortress balance sheet — basically zero leverage. Very low.
• Earnings quality (60): cash conversion >100% of EBITDA in 2025. However, the IAS 16 restatement and historical use of contract cost assets reduces the "clean" score; there are non-trivial judgement areas (provision for 4G replacements, contract cost amortisation periods).
• Management quality (62): Founder Andy Walters returned as Chairman in 2023 and has reversed Konetik disaster, restored focus on core, improved disclosure, raised dividend. Prior management made the Konetik mistake — so neither distinguished nor poor capital allocators on a 5-year view.
• Growth momentum (68): ARR growth 14% in 2025 (vs. 12% in 2024, vs. 8% in 2023). Accelerating, but mid-teens not high-teens; Q1 2026 already showing some deceleration in unit terms.

Overall score

475 / 1000. Quality UK vertical-SaaS at a reasonable price with high operating leverage and pristine balance sheet — but the AI-beneficiary angle is thin to non-existent, which is a heavy weight for this investor profile. The stock would score 650+ for a quality-and-yield investor; for an AI-receiver mandate it sits as a "knowing about it" name, not a focus position.