Methodology
How we source our IPO data
Every number on ipostation traces to a primary source. Here is what we track, where each figure comes from, how often it refreshes, and how we compute the derived ones — so you can judge the data for yourself.
| Metric | Source | Updated |
|---|---|---|
| Grey market premium (GMP)Unofficial. GMP is an informal, unregulated indicator — not a price set by any exchange. | Grey-market dealer aggregators — InvestorGain (primary), cross-checked against ipowatch | Roughly every 30–60 min while an IPO window is live |
| Subscription (QIB / NII / retail) | Exchange-fed aggregators carrying NSE & BSE bidding data, category-wise | Intraday during the bidding window |
| Price band, lot size, dates | NSE & InvestorGain calendar feeds; DRHP-stage IPOs via Chittorgarh; verified against RHP / SEBI filings | Calendar refreshed hourly; details enriched daily |
| Allotment schedule & registrar | Registrar (KFintech, MUFG Intime, Bigshare, …) & RHP | On finalisation of the basis of allotment |
| Listing price & listing gain | BSE & NSE bhavcopy (official end-of-day) | On listing day, after close |
Data sources & update cadence
Calendar & IPO details. The live IPO calendar — dates, price band, lot size, status — comes from NSE and InvestorGain feeds and refreshes hourly. Anticipated IPOs still at the DRHP stage are picked up from Chittorgarh daily. Deeper detail (financials, anchors, lead managers, reservation splits) is enriched daily and checked against the RHP and SEBI filings.
GMP. Grey-market premium comes from dealer-quote aggregators: InvestorGain is the primary feed, refreshed roughly every 30–60 minutes while an IPO window is live, and each run is cross-checked against ipowatch — an independent vendor. When the two diverge materially we flag the conflict for review; we never silently average them. If the primary feed is down, the cross-check source takes over so the figure stays live rather than stale.
Subscription. Category-wise bids (QIB, NII, retail, employee, shareholder) come from exchange-fed aggregators carrying NSE and BSE bidding data, captured intraday through the bidding window.
Listing prices. Actual debut prices come from the official BSE and NSE bhavcopies after close on listing day — the exchange record, not an estimate.
Corrections
Spotted a wrong number? Email knowyourbrokerage@gmail.com with the IPO name and the figure in question. We verify against the primary source and ship the fix with the next sync or deploy — corrections land at the source, so they propagate everywhere the number appears.
How we compute derived figures
GMP %
GMP as a percentage of the upper price band: (GMP ÷ issue price) × 100. It is the grey market’s implied premium, nothing more.
Estimated listing price
Issue price + current GMP. Shown only once a price band exists; before that we show “Price TBA” rather than a fabricated number.
Listing gain
Actual listing price versus issue price: (listing price − issue price) ÷ issue price × 100, using the official BSE listing price.
What we don’t do
- We never ask for your PAN, application number or any personal data — allotment pages only deep-link you to the official registrar, BSE or NSE.
- We never publish subscribe/avoid calls or price targets. ipostation is a data utility, not a SEBI-registered advisor.
- We never present GMP as a guaranteed or official listing price.
- We never accept payment to alter, rank or hide an IPO’s data.