So you’ve backed a startup that’s taken off—maybe you’re up 10x or more on paper. Congratulations! But now you face a classic angel investing dilemma: do you cash out some of your gains, or hold tight for even more upside? Let’s break down how to think about this using a diversification mindset.
Rebalancing: Not Just for Public Stocks
Diversification isn’t a one-time thing. Even if you started with a balanced set of bets, a single big winner can leave your portfolio dangerously concentrated. If one investment grows to become, say, 40% or more of your total portfolio value, you’re now heavily exposed to the fate of that single company—no matter how promising it looks.
When to Consider Selling
Unlike public markets, selling startup shares isn’t always easy. But options like tender offers or secondary market sales do come up, usually after a company’s major growth rounds. Here’s a way to approach the decision:
- Think in Multiples: If your investment is up 5x, 10x, or more, consider what that means for your overall returns. Would selling a portion at a 10x multiple materially improve your portfolio’s risk/reward balance?
- Portfolio Proportion: If one winner is more than 25-40% of your total portfolio value, it might be time to de-risk—especially if the rest of your investments are early-stage and less liquid.
- “Let it Ride”—But Not All of It: Many experienced angels sell a portion (say, 25-50%) when given the chance, letting the remaining shares ride. This way, you lock in some gains but keep skin in the game for future upside.
Scenario Example
Let’s say you’ve made 10 angel investments. Nine are valued at your original $10k each, but one is now worth $300k—a 30x on your $10k. Your total portfolio is $390k, and that one company represents over 75%. If a tender offer comes along, selling even a third of your position ($100k) would reduce your concentration, realize significant gains, and still leave you exposed to further upside if the company continues to grow.
In the end, there’s no perfect answer. But if you’re sitting on a big winner, ask yourself: what’s my risk tolerance, and how would I feel if this one company stumbles? A little de-risking can go a long way toward keeping your angel investing journey (and your stress levels) on track.
Want to dive deeper into portfolio strategy? Check out How Many Investments Should I Make? for more on portfolio construction and risk.