I would like to ask about the number of startup investments in both pre-seed and seed stages to reach optimum diversification for a Fund of about €10 Million.
This is highly depended on the fund model and strategy. There is very big difference between pre-seed and seed. All factors considered here are some very high level guidelines:
Pre-Seed: ~50 companies
Seed: ~25 companies
Pre-Seed: ~50 companies
Seed: ~25 companies