I'll analyze Rightmove based on the filings provided.

Rightmove PLC (RMV) — Investment Research Note

Executive summary

Rightmove operates the UK's dominant residential property portal (>80% of time spent on UK property portals per Comscore), monetising ~19,000 estate-agency branches and new-homes developments via subscription packages plus incremental digital marketing products. The trajectory across the period is remarkably consistent: revenue has compounded from £289m in 2019 to a guided £450–460m in 2026, with underlying operating margins held at 67–74%; the model absorbed a market downturn in 2023-24 and delivered accelerating ARPA growth throughout. The single most important valuation point today is the disconnect between a ~45% share-price fall from July 2025 highs (824p → 457p) and a business still guiding to +3–5% underlying operating profit growth, ≥5% EPS growth and returning >£400m of capital in the next 12 months — the market appears to be pricing in AI disintermediation risk that has not yet appeared in the numbers (<0.5% of traffic referred from LLMs as of H1 2026).

Fair value estimate

• Methodology: Forward P/E multiple, cross-checked against implied FCF yield and buyback capacity.
• Key assumptions: FY26 underlying EPS of ~30.5p (mid-point of ≥5% growth on 2025's 29.1p); target multiple range 16–19x, versus 10-year average >22x but discounted for slower growth and AI overhang; ~5% annual share-count reduction supports EPS growth even if revenue growth stays at 6–8%.
• Per-share fair value range: 490p – 580p (mid ~535p).
• Implied market cap range: £3,624m – £4,290m (mid ~£3,957m).
• Current market cap: £3,234.6m.
• Upside to midpoint: ~22% (range: +7% to +27%).

Sector context

• Sector classification confirmed: Real Estate (ICB), but functionally this is a vertical SaaS marketplace / online classified, not a property owner. Closer analytical peers are digital-classifieds/platforms rather than REITs.
• Quality profile is far above sector norms: 69% underlying operating margin, 108% cash conversion, net-cash balance sheet, mid-single-digit revenue growth with double-digit ARPA growth 2026-07 H1.
• Listed peers: OnTheMarket (private/delisted), Auto Trader (AUTO.L, closest structural analogue), REA Group (Australia — the same REA that made an unsolicited bid rejected in 2024), Scout24 (Germany).

Investment thesis

1. Dominant network effect with pricing power that is actually being exercised. Agency ARPA grew 8% in H1 2026 (with average products per branch up 14%), and highest H1 retention in 10+ years at 96% — this is a monopoly-like platform where customers pay more each year and don't leave 2026-07 H1 financial report. Optimiser Edge penetration reached 36% of independent agents.
2. Capital return acceleration at a depressed share price. The Board has drawn a new £200m RCF specifically to fund ~£330m of buybacks alongside cash-funded returns, targeting >£400m of returns in the next 12 months (~12% of current market cap) at prices well below the July 2025 highs 2026-07 H1 financial report. This is a rational management team leaning in when the equity is cheap.
3. Valuation now discounts the AI bear case despite no evidence of impact. LLM-referred traffic is <0.5% and unchanged since December 2025; direct+organic traffic remains >85%; "Ask Rightmove" AI-search is showing +40% time-on-site uplift and ~2x lead propensity from users engaging with it 2026-07 H1 & 2026-05 trading update. The market is pricing structural risk that management can quantify as immaterial today.

Key risks

1. AI-agent disintermediation is a genuine long-tail threat. If future consumers search property via ChatGPT-style agents rather than portal apps, the network-effect moat weakens. Management's own principal risks explicitly cite this: "Emerging technologies, particularly artificial intelligence, could disrupt the house-moving journey and reshape competitive dynamics" 2026-07 H1.
2. New Homes weakness and competitive class action. New Homes development listings down 6% year-on-year, forcing the FY26 revenue guide-down from 8-10% to 6-8%. Separately, a Competition Appeal Tribunal collective action seeks damages of up to £1.56 billion (~48% of market cap); certification hearing November 2026. Group considers it "without merit" but the exposure is disclosed 2026-07 H1, note 15.
3. Growth deceleration is now structural, not cyclical. Revenue growth has stepped down from ~10% (2019-2022 era) to a guided 6-8% (FY26). Membership is flat; growth relies almost entirely on ARPA (product/package upsell). If package saturation is reached, growth converges to ARPA + membership only 2025-11 trading update.

Operating leverage

Rightmove is a textbook high-operating-leverage platform. Underlying operating margin of 69% in H1 2026, with employee benefits (£41.4m) representing the single largest cost — payroll grew £5m while revenue grew £14.1m, giving incremental contribution well above 60% on the payroll line 2026-07 H1. Technology infrastructure, brand marketing and central overhead scale sub-linearly with revenue. Cash conversion at 108% of operating profit confirms costs are largely fixed and cash. If revenue were to surprise by +10-15% above guidance (say through faster ARPA acceleration or Strategic Growth Areas outperformance in Commercial, Rentals, Mortgages — currently guided +20-30%), incremental operating profit would drop through at 75-80% margins, adding £15-25m to underlying operating profit versus the current £300m base — a 5-8% profit surprise on a 10-15% revenue beat. Meaningful, but not "revenue-doubles-profit" transformational; the business is already at high fixed-cost saturation.

Value-trap signals

• Structural traffic risk from AI agents — could be terminal-decline signal but not yet visible.
• Revenue growth deceleration despite ARPA discipline — membership stopped growing; growth model narrower than 5 years ago.
• Class action overhang — up to £1.56bn claim, though management believes without merit.
• REA bid rejected in 2024 at premium; stock now well below that level — could indicate market disagreement with Board's fair-value view, or vindicate the Board's judgment depending on trajectory from here.

Earnings vs expectations

• FY24 (Feb 2025 release): Revenue £389.9m (+7%), underlying op profit £273.9m (+4%) — in line with prior guidance of 7-9% revenue and 70% margin. Met.
• FY25 (implied from H1 2026 comparators): Revenue £425.1m (+9%), guided at ~9% within 8-10% range. Met.
• H1 2026 vs. May 2026 AGM reaffirmation: Revenue +7% versus reaffirmed 8-10% guide; management cut FY26 guide to 6-8% at H1, attributed to lower New Homes developments. Miss relative to guidance issued two months prior.
• Underlying operating profit guidance (+3-5%) and EPS guidance (≥5%) reiterated — margin discipline intact despite revenue miss.

Pattern: consistent delivery through 2024-2025 broken by the H1 2026 revenue guidance cut. Management has a good track record but the most recent data point is a miss.

Conviction: 4 / 5

Supports: (a) exceptionally clean financials and disclosure, audited by EY with unqualified opinion; (b) simple business model with unambiguous multi-year track record; (c) multiple valuation methods (P/E, FCF yield, DCF, precedent M&A at 770p+ from REA) converge in the 480-600p range. Limits: (a) terminal multiple depends on unresolved AI disintermediation debate — could be 12x or 22x depending on 5-year traffic trajectory; (b) contingent liability from £1.56bn class action is a binary risk not yet ripe.