Via Negativa in Investing: The Subtractive Approach

Most investing advice is additive. Buy this sector. Allocate to that region. Consider this new asset class. Get exposure to this opportunity. Build this allocation. The industry churns out thousands of recommendations per day, all in the direction of doing more.

The investment advice that actually works is the opposite.

The Negative Advice That Beats Professionals

An investor following only via negativa advice beats the majority of actively managed portfolios over decades. Here's the full list:

That's it. That's the entire portfolio strategy. An investor who does nothing else—who owns a diversified low-cost index fund, holds it for decades, and avoids those five traps—will outperform:

The empirical record is clear. The active management industry produces lower net-of-fees returns than simple indexing. This has been true for decades. It is becoming more true.

And yet the industry continues to exist because the additive advice is where the money is.

Why the Industry Sells Addition

A financial advisor cannot charge 1% per year to tell you to invest in a low-cost index fund and do nothing. That's a one-time conversation: "Here's what to do. Goodbye."

But an advisor can charge 1% per year to manage your portfolio, rebalance quarterly, monitor market conditions, adjust allocations, and sell you on the idea that activity equals competence.

A fund company cannot extract revenue from a passive index. But it can extract revenue from an actively managed fund that claims superior performance (which it doesn't produce).

A brokerage cannot make money on a buy-and-hold investor. But it can make money on an active trader through commissions, spreads, and lending cash balances.

The financial industry is not organized around what works for you. It is organized around what produces fees. And via negativa is free.

What a Subtractive Investor Actually Owns

I know investors who have followed only the via negativa rules. Their portfolio looks boring:

They rebalance once a year, maybe. They don't check the news. They don't chase performance. They don't chase sectors or trends. They don't trade.

Their returns, net of fees, exceed the vast majority of professional investors. They sleep well. They rarely think about markets. They've outperformed by doing almost nothing.

The market does the work. Time does the work. Compounding does the work. The investor's job is to get out of the way.

The Price of Adding

Every time an investor adds something to their portfolio, they incur costs:

These costs are real and measurable. A single 1% fee over 30 years is worth years of portfolio growth through compounding. A single percentage point of annual underperformance due to unsuccessful market-timing is worth decades of work's returns.

The average active investor trades much more than optimal. The average fund manager turns over a substantial portion of portfolio annually. The average advisor recommends allocation adjustments that look prudent but produce suboptimal results through the cost mechanism.

All of this is additive in the sense that it requires doing something. None of it is additive to returns.

Leverage: The Via Negativa No-No

Leverage is the clearest example. Leverage magnifies returns in good years and magnifies losses in bad years. For twenty years, a leveraged investor outperforms. Then one bad year arrives and wipes out all prior gains.

Via negativa is simple: don't use leverage.

This rule is unpopular because it costs money in bull markets. When markets are rising, the leveraged investor earns more. The subtractive investor (who refused leverage) looks foolish. But the rule is there to protect against what happens when the rule is violated.

The 2008 financial crisis was a leverage crisis. The 1998 Long-Term Capital Management collapse was a leverage crisis. Every major financial catastrophe in the past century has leverage at its core.

The subtractive investor avoids this entire category of risk by simple refusal.

Market Timing: The Via Negativa No-No

Investors try to time markets. Sell when high, buy when low. In theory, it works. In practice, nobody can do it consistently, and the transaction costs of trying exceed any benefit.

Via negativa is simple: don't try to time the market.

The evidence is brutal. Morningstar studies track when investors actually buy and sell their funds. The average investor buys after long bull markets (when prices are high) and sells after crashes (when prices are low). Their returns are materially worse than if they simply held.

This pattern persists across investor sophistication levels. Professionals time markets worse than amateurs because they have money to move and conviction in their models—both of which are confidence that leads them into the trap.

The subtractive investor owns their allocation and ignores the noise. They ignore the headlines, the forecasts, the "this is definitely a bubble" calls, the "markets are cheap" calls. They do nothing and outperform those who did something.

High Fees: The Via Negativa No-No

An investor paying 1.5% in annual fees versus 0.1% in index fund fees will underperform by roughly 1.4% per year (before considering underperformance due to bad stock-picking). Over 30 years, that is a difference of 30–40% of final wealth.

Via negativa is simple: don't pay high fees.

The high-fee advisor will claim that the fees are worth it because of superior performance or personalized service. The data doesn't support this. The high-fee mutual fund will claim that its manager justifies the cost. The data doesn't support this.

The via negativa investor owns low-cost index funds and saves a lifetime of wealth in fees.

Things You Don't Understand: The Via Negativa No-No

Complex financial instruments are designed to be hard to understand. That complexity serves those who sell them. It extracts price from those who don't understand them.

Via negativa is simple: don't invest in things you don't understand.

If you cannot explain an investment clearly in two paragraphs, you don't understand it well enough to own it. If you cannot explain why you own it and what could go wrong with it, you don't understand it.

This rule eliminates structured products, derivatives, complex ETFs, options strategies, and most actively managed funds. The subtractive investor is left with a handful of transparent choices: stock funds, bond funds, real estate, maybe some small alternatives if understood.

The lack of sophistication is the point. Sophistication is where the money gets extracted.

The Glamour Problem

Here's the one challenge with via negativa investing: it's not glamorous. There's no story. No beating the market. No clever insight. No beat the pros narrative.

I follow every investor who became famous for beating the market. The story is always the same: eventually they don't. Or they do for a while but the fees eat it all. Or they blow up spectacularly.

The investors who remain rich and solvent are the ones who follow the boring path. They took the via negativa rules seriously. They held. They didn't trade. They didn't add complexity.

Their lives are not interesting to write about. Their portfolios are not interesting to follow. But their wealth compounds, reliably, through decades.

That is the entire point.