Subscription Beats GMP: What 138 IPO Listings Tell Us About Predicting Listing Gains
By IPO Cracker Editorial Team · 03 Aug 2026
Retail investors watch grey market premium. The data says they should be watching subscription.
We took every IPO we have tracked to listing day where a final subscription figure and a real listing price both exist, grouped them by how heavily they were subscribed, and measured what listing day actually paid.
The result
| Final subscription | IPOs | Average listing gain | Profitable on listing day |
|---|---|---|---|
| Under 5x | 69 | -3.91% | 27.5% |
| 5x to 20x | 21 | +2.58% | 66.7% |
| 20x to 50x | 11 | +4.08% | 72.7% |
| 50x to 100x | 10 | +15.58% | 90.0% |
| Over 100x | 27 | +39.78% | 96.3% |
Every step up in subscription improved both the average return and the odds of any gain at all. There is no bucket where the pattern reverses.
The two numbers worth remembering
Under 5x subscribed, an IPO lost money on listing day about 72.5% of the time, with an average loss of 3.91%. Weak demand during bidding was the single clearest warning sign in the dataset.
Above 100x, 96.3% listed at a gain, averaging 39.78%. Heavy oversubscription was the strongest positive signal available before listing.
Why this beats GMP
We ran the same exercise on grey market premium. GMP called the direction correctly 58.9% of the time overall, and only 52.3% on SME issues. Subscription separates outcomes far more cleanly, and it has two structural advantages.
Subscription is official. It comes from the exchanges, it is auditable, and it cannot be talked up by an interested party. GMP is an unofficial quote from an unregulated market.
Subscription is a commitment. Money is actually blocked against those bids. A grey market premium is an indication of what somebody says they would pay.
How to use it
- Watch the last day. QIB money arrives late, and institutional demand is the component with real research behind it.
- Treat under-5x as a red flag, not a bargain. Nearly three in four of those listed below the issue price.
- Do not read heavy oversubscription as a free lunch. It also collapses your allotment odds, and buying on listing day at a 40% premium is a different trade from being allotted at the issue price.
- Remember the survivorship point. An IPO that gets pulled for weak demand never appears in a listing-gains table.
Caveats
This is our own tracked dataset. Two buckets contain only ten and eleven IPOs, so their averages are fragile. The period covered is a broadly supportive market for new issues; the relationship would likely weaken in a falling one. And a correlation across 138 listings is not a promise about the next one.
Recomputed from our live database. See live subscription for every open IPO and the listing performance tracker.