Power Law Venture Investing
Build a portfolio around rare winners that can repay every failed bet
- Difficulty
- Advanced
- Time to result
- ~ongoing to results
- Steps
- 5
- Confidence
- 98%
Power-law investing starts with the observation that startup returns are radically skewed rather than clustered around an average. Most investments may return nothing, while a tiny number can appreciate enough to repay every loss and produce the fund's profit. The investor therefore does not optimize primarily for a high batting average or modest gains across every position. The mechanism is to place multiple informed bets, ensure each has genuinely exponential potential, and retain exposure to the rare companies that begin compounding dramatically. Portfolio decisions are evaluated by their ability to capture grand slams, not by how few failures they produce. This changes sourcing, selection, ownership, follow-on funding, and the emotional interpretation of losses.
Origin
Extracted from Masters in Business through Sebastian Mallaby's explanation of the power-law economics underlying venture capital.
Core principles
- 01A small minority of investments generates most returns
- 02Loss avoidance is less important than owning exceptional winners
- 03An investment must have enough upside to matter to the whole portfolio
- 04Frequent failures are compatible with outstanding aggregate performance
How to run it
- 1
Set the return threshold
Define how large a successful company must become for the investment to materially affect the entire portfolio. Reject opportunities whose best plausible outcome is merely respectable.
Pro tip Work backward from the fund size and expected ownership stake.
Watch out A good company is not necessarily a portfolio-scale investment.
- 2
Place multiple asymmetric bets
Build exposure to several independent companies capable of exponential growth. Expect a significant failure rate rather than treating every loss as evidence that the strategy is broken.
Pro tip Diversify across opportunities without diluting every position into insignificance.
Watch out Do not use diversification as an excuse to fund companies with limited upside.
- 3
Identify emerging outliers
Monitor evidence such as product adoption, technical progress, retention, and market expansion. Distinguish ordinary progress from the nonlinear momentum of a potential outlier.
Pro tip Compare acceleration rates, not just current company size.
Watch out Early excitement can resemble durable exponential growth.
- 4
Preserve exposure to winners
Use follow-on capital and ownership strategy to maintain meaningful participation in companies proving the thesis. Avoid selling solely because an investment has already risen substantially.
Pro tip Reserve capital before the portfolio reveals its likely winners.
Watch out Overconcentration without new evidence turns a power-law strategy into blind conviction.
- 5
Evaluate the portfolio correctly
Measure whether the winners outweigh aggregate losses and opportunity costs. Do not optimize for the percentage of companies that survive.
Pro tip Track return contribution by company as well as overall hit rate.
Watch out A high success rate can conceal a portfolio with no transformative winner.
In the wild
An investor backs ten technically ambitious startups, knowing several may fail. One company develops a category-leading platform and grows to more than fifty times the original valuation. The investor protects ownership through follow-on rounds instead of selling early, allowing that single position to repay all failed investments and drive the fund's return.
→ One exponential winner dominates the portfolio and validates the asymmetric construction.
Mallaby contrasts a Boston investor proud that only one of roughly forty startup bets lost money with the West Coast view that such a record indicated insufficient risk. Avoiding nearly every loss also made it less likely that the investor had pursued companies capable of tenfold or greater returns.
→ The comparison shows why batting average is the wrong primary metric for venture capital.
Common mistakes
Optimizing for a perfect batting average
Avoiding every likely failure selects safer opportunities but can eliminate the extreme upside the portfolio requires.
Selling the winner too early
Taking a quick gain can remove exposure before the company produces the nonlinear return that repays the portfolio.
Confusing any risky bet with asymmetry
High failure probability is useful only when the plausible winning outcome is exceptionally large.
Is it for you?
Best for
This framework is best for investors evaluating early-stage companies with uncertain but potentially enormous outcomes.
Not ideal for
It is not ideal for capital that requires liquidity, predictable income, or strict protection from individual losses.
From the transcript
“The way to make money is to make sure that when you win, you win. We're really big.”
“The whole game is to get a piece of the exponential winners.”
“Venture capital is a game of grand slams”
From the episode
Sebastian Mallaby on How Venture Capital Made Silicon Valley
Sebastian Mallaby