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'upcoming' = announced intention-to-float (ITF), FCA-approved prospectuses or admission documents filed but not yet listed (forward calendar — typically 10-25 active book-builds at any time across Main Market + AIM + HGSM). 'recent' = past N days of completed IPOs (priced + first-day admissions) with first-day pop and current return. 'both' (default) = upcoming + recent in one pull, sorted with Upcoming first then most-recent admissions.", "default": "both" }, "lookbackDays": { "title": "Lookback window (days)", "minimum": 1, "maximum": 1825, "type": "integer", "description": "How many days of completed LSE IPOs to include when mode is 'recent' or 'both'. Default 60 days returns the most-recent quarter of admission activity — typically 4-12 listings on Main Market + AIM combined in an active window. LSE prices roughly 40-110 IPOs/year (Main + AIM); 180 days is the practical upper bound for institutional dashboards. Set higher (e.g. 365 or 1825) for full-year vintage studies or nomad / sponsor league-table research.", "default": 60 }, "lookaheadDays": { "title": "Lookahead window (days)", "minimum": 1, "maximum": 365, "type": "integer", "description": "How many days of forward LSE IPO calendar to include when mode is 'upcoming' or 'both'. Default 60 days returns the active book-build pipeline (deals with ITF announcements + FCA-approved prospectuses). 90-180 days extends to the medium-term pipeline (ITF posted but admission date not yet fixed). 180+ days surfaces the soft pipeline (rumored / nomad-mandated AIM deals).", "default": 60 }, "market": { "title": "LSE market tier", "enum": [ "all", "Main Market", "AIM", "HGSM" ], "type": "string", "description": "Filter by LSE market segment. 'Main Market' = senior board (Premium / Standard listings; FCA-regulated; FTSE-eligible). 'AIM' = Alternative Investment Market (LSE's growth board — nomad-supervised, lighter regulatory regime, ~600 issuers). 'HGSM' = the High Growth Segment Market reformed in 2024 (Wise, THG-class candidates) — equivalent to LSE's transition tier for high-growth tech. 'all' returns every tier.", "default": "all" }, "status": { "title": "Listing status filter", "enum": [ "all", "proof", "approved", "listed", "withdrawn", "postponed" ], "type": "string", "description": "Filter by IPO lifecycle stage. 'proof' = early-stage prospectus / admission document submitted to FCA / LSE (pre-approval). 'approved' = FCA-approved prospectus or LSE admission document — book-build active. 'listed' = admitted to trading. 'withdrawn' / 'postponed' = pulled. 'all' returns every status.", "default": "all" }, "sector": { "title": "ICB-style sector filter", "enum": [ "all", "Technology", "Healthcare", "Financials", "Consumer Discretionary", "Consumer Staples", "Industrials", "Energy", "Real Estate", "Materials", "Communication Services", "Utilities", "Basic Resources" ], "type": "string", "description": "Filter by sector (ICB / GICS-aligned). LSE IPO mix is dominated by Financials (investment trusts, REITs, SPACs), Healthcare (AIM biotech), Industrials (UK manufacturers), Technology (Wise, Deliveroo, THG class), Energy (North Sea, oil & gas), and the resurgent 2024-2026 Consumer / Resources wave. 'all' = no filter.", "default": "all" }, "minRaiseGbpMillion": { "title": "Minimum gross raise (GBP millions)", "minimum": 0, "maximum": 50000, "type": "number", "description": "Lower bound on gross IPO raise in GBP millions. Use to filter out micro-cap AIM placings. Typical thresholds: '5' = small AIM placing, '25' = mid AIM / small Main, '100' = institutional Main Market, '500' = mega-deal (Aramco UK rumored class, Haleon GSK spin, BAT-class re-listings). Leave 0 for no lower bound. 1 GBP ≈ 1.27 USD.", "default": 0 }, "limit": { "title": "Max IPO records returned", "minimum": 1, "maximum": 200, "type": "integer", "description": "Hard cap on total LSE IPO records returned (1-200). Each IPO is one dataset row. Premium pricing applies per row — UK IPO data is institutional intel (Bloomberg LON IPO / Refinitiv LSEG Workspace / Dealogic equivalents cost USD 2,000-2,500/seat/month). LSE prices ~40-110 IPOs/year so most useful runs are limit=20-100. 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