What are kostak and subject-to-sauda?
Grey-market slang. Kostak is a fixed price someone pays for your whole application before allotment. Subject-to-sauda pays only if you get shares. Both are unofficial, like GMP.
Right now, on this site
Across the 45 IPOs we followed from a last pre-listing quote to the real listing-day open, grey-market premium pointed the right way 80% of the time, and overstated the gain by a median of 1 pp. The record, issue by issue.
We hold a grey-market quote for 1 issue right now, each with the number of independent sources behind it. Today's GMP.
Live figures, rebuilt every pipeline run. Updated .
How accurate has GMP actually been? Our issue-by-issue record of grey-market premium against the real listing-day outcome — the one GMP question nobody else answers. See the GMP accuracy record →
See it on a real IPO. Every open and upcoming issue, with the numbers explained.
Browse live IPOs →