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 quotes, aggregated | Through market hours on active IPO days |
| Subscription (QIB / NII / retail) | NSE & BSE bidding data | During the bidding window |
| Price band, lot size, dates | RHP / SEBI filings & exchange circulars | On announcement, then as revised |
| Allotment schedule & registrar | Registrar (KFintech, MUFG Intime, Bigshare, …) & RHP | On finalisation of the basis of allotment |
| Listing price & listing gain | BSE bhavcopy (official end-of-day) | On listing day, after close |
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.
How reliable is grey-market premium as a listing signal? We keep an honest scorecard of GMP versus actual listing prices — see the GMP accuracy study. Data is produced by the ipostation Research Desk; grey-market limits are set out in our disclaimer.