Why does this methodology focus on a subset of the portfolio?

For a full-economy transition to net zero, all assets will be required to align with net zero. However, this methodology is intended as a starting point for the VC industry, and as such, focuses on those situations where a VC investor is likely to have access to information and influence over portfolio companies. The VCA is also developing a Portfolio Engagement Framework that could be implemented to cover non-influence investment scenarios in a VC portfolio.