It depends on the platform. Most of Binance past IEOs are in profit. While almost all of past IEOs managed on Latoken are dead.
Here is a good summary of profitable IEOs and exchange platforms:
Source: threader.app
Here is a good summary of profitable IEOs and exchange platforms:
Source: threader.app
From your chart we can all see that even IEOs are not perfect in terms of guaranteed returns. I also have a feeling that the buzz for IEO will die quicker than expected. Take a look at the latest IEO on binance for example. Perlin. A highly rated project that is struggling with a good return on investment due to its unimpressive price