WHY STARTUP INVESTING BELONGS IN YOUR PORTFOLIO
- Mark Bivens

- May 9
- 1 min read
Most investors build their portfolios around stocks, bonds, and real estate. These are sensible foundations — but they share a common weakness: in a broad market downturn, they tend to fall together.
Startup investing offers something different: genuine diversification.
Early-stage private companies are not priced by public markets. Their valuations are driven by business fundamentals — product traction, customer growth, team execution — not by daily market sentiment. When public markets correct, a portfolio that includes private startup investments is not equally exposed.
This low correlation is the point. Adding an asset class that moves independently of public markets can reduce overall portfolio volatility, not just layer on more risk.
Of course, startup investing carries its own risks. Most early-stage companies will not reach a successful exit, which is why diversification within the asset class matters: investing across multiple companies, sectors, and time periods rather than concentrating in one or two bets. A common starting allocation is 5–10% of investable assets, built gradually over time.
In Japan, the Angel Tax System adds further structure — income deductions at the point of investment and preferential treatment on capital gains at exit — improving the risk-adjusted economics for qualifying investors. Angel Zeisei Fund is designed to help investors access these benefits efficiently.
The goal is not to replace what public markets do well. It is to complement them with an asset class that behaves differently — and in doing so, build a more resilient portfolio.




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