WorldBest IPO

IPO Allotment Probability Calculator

Enter the retail subscription multiple to see your realistic chance of an allotment.

e.g. 5 means the retail portion was bid 5× over
separate PANs — one application per PAN is allowed
The thing most people get wrong: in the retail category, applying for 10 lots does not make you 10× more likely to be allotted. When retail is oversubscribed, SEBI's rules require the minimum bid lot to be allotted to as many applicants as possible, decided by a computerised lottery. Every retail application is one entry in that draw, whatever its size. The only legitimate way to increase your chances is more applications on different PANs — typically family members, each applying from their own account and funds.

How this is calculated

When the retail portion is oversubscribed, the number of lots available divided by the number of applicants gives each applicant's chance of winning the draw. Since almost all retail applicants bid at least one lot, that ratio is closely approximated by 1 ÷ retail subscription.

With more than one application, the chance that at least one succeeds is 1 − (1 − p)n, where p is the single-application probability and n the number of applications.

If the retail portion is not oversubscribed (subscription of 1× or less), everyone who applied normally receives a full allotment, so the probability is 100%.

What this does not model

It does not account for technical rejections, ASBA mandate failures, or the small variations exchanges apply when the number of applicants is very close to the number of lots. Treat it as the shape of your odds, not a guarantee.

Educational tool, not advice. Figures are arithmetic on the numbers you enter. Nothing here predicts an outcome or recommends an investment. Verify against your broker and the official registrar before acting.