Venture Capital & Term Sheets

The Power Law

Venture Capital and the Making of the New Future

Sebastian Mallaby · 2022 · Penguin Press

A history of venture capital that explains why investors behave as they do, through the one statistical rule that drives their returns.

The big idea

What the book argues

Mallaby traces venture capital from its early backers through the major Silicon Valley firms to today's global growth investors. The organizing idea is the power law: in venture, a few investments produce most of the returns, so investors hunt for outliers rather than safe bets. Seen through that lens, behavior that confuses founders makes sense, from passing on good businesses to piling into a hot company. He also examines the industry's failures, including weak oversight of celebrated founders.

Key takeaways

6 ideas worth keeping

1

A few winners drive almost all returns

Venture outcomes are not spread evenly. The best investment in a portfolio can return more than all the others combined, and many investments return little or nothing. Investors therefore focus less on avoiding losses and more on making sure they hold the rare company that becomes enormous.

2

Investors ask whether you can return the fund

Fund size and expected ownership determine how big an exit has to be to matter. That is why the same company can be a poor fit for a large fund and an excellent one for a small seed fund. Target investors whose fund your realistic outcome can meaningfully move. Venture firms are built around this fact.

Illustration: A $500M fund that owns 10% of a company at exit needs a $5B sale just to return the fund once.
3

The best investors bring more than money

Mallaby shows that the influential early venture capitalists did much more than write checks. They helped recruit executives, open doors to customers, and shape governance. Arthur Rock's backing of the founders who left to start Fairchild Semiconductor, which Mallaby calls liberation capital, gave talented people the means to strike out on their own.

4

Fund in stages to retire the biggest risk

Staged financing lets investors spend a limited amount to eliminate the most important uncertainty, then raise more at a higher valuation once that risk is gone. Tom Perkins's approach with Genentech, focusing early money on proving the core science, is the book's classic example. Each stage then earns its price.

Illustration: Plan each round around one named risk: whether the technology works, whether customers will pay, or whether growth can be repeated.
5

Concentrate resources on what is clearly working

Because the power law rewards outliers, strong investors put more money behind companies that are breaking out rather than spreading follow-on capital evenly. The same logic applies inside a startup: shift time and money toward the channels and products clearly outperforming. Pruning weak efforts frees resources for strong ones.

6

Founder-friendly money still needs real board governance

Mallaby describes how a wave of investors competed by offering founders large checks with few controls, and how some high-profile companies, including Uber and WeWork, suffered from weak oversight. His view is that empowered founders do best alongside engaged, independent boards. Independent directors and real information rights protect everyone, including founders.

The framework

The fund-returner test

01

Find fund size

Look up the size of the fund the investor is investing from.

02

Estimate ownership

Estimate the stake the investor is likely to hold at exit after dilution.

03

Divide

Fund size divided by ownership gives the exit needed to return the fund once.

04

Compare

If your realistic outcome falls far short, look for a smaller fund.

Apply it this week

Three moves to make now

  1. Before contacting an investor, divide their fund size by expected ownership and compare the result with your realistic exit.
  2. For each future round, name the single biggest risk it will remove and size the raise to that goal.
  3. Ask prospective lead investors how they have handled governance and board oversight in difficult situations.

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Pairs well with

This page is an original summary and commentary prepared by XRAYCLOUD.AI with AI assistance. It is not affiliated with or endorsed by the author or publisher, and it is no substitute for the book — read it for the full argument.