Active Investor Suitability Test
Choose active investing only when you value both the work and the process
- Difficulty
- Easy
- Time to result
- ~days to results
- Steps
- 5
- Confidence
- 98%
The test separates genuine active investors from people merely attracted by the possibility of beating the market. First assess whether you are willing to learn the necessary tools, including accounting, present value, and the relationship between risk and return. Next determine whether you have enough time to research and value companies properly. Finally, remove outperformance from the thought experiment: imagine spending decades selecting stocks only to finish slightly behind an index fund. If that outcome would make the effort feel wasted, passive investing is probably the better fit. The mechanism treats active investing as a demanding practice that must provide intrinsic value, not simply as a lottery ticket or a guaranteed route to wealth.
Origin
Extracted from Masters in Business during Aswath Damodaran's discussion of who should perform valuations and who should simply use an index fund.
Core principles
- 01Active valuation requires technical competence.
- 02Investing should preserve and grow earned savings.
- 03Enjoyment of the process matters more than outperforming.
- 04Indexing is preferable when active work adds no personal value.
How to run it
- 1
Test your learning commitment
Decide whether you are genuinely willing to learn accounting, present value, and the foundations of risk and return.
Pro tip Review a basic valuation lesson before answering so the commitment is concrete.
Watch out Wanting valuation results without learning the tools creates false confidence.
- 2
Audit your available time
Estimate how much time you can reliably devote to reading financial statements, building valuations, and reviewing assumptions.
Pro tip Use a realistic weekly schedule rather than an aspirational estimate.
Watch out Occasional attention is unlikely to support disciplined active investing.
- 3
Identify your motive
Distinguish enjoyment of investing from the desire to get rich quickly or find the next spectacular winner.
Pro tip Ask whether you would still study companies if no one saw your returns.
Watch out Lottery-ticket motives can amplify mistakes and emotional reactions.
- 4
Run the deathbed test
Imagine that decades of active investing produce a slightly lower return than an index fund. Decide whether the process itself would still have been worthwhile.
Pro tip Focus on lifetime satisfaction rather than one year's performance.
Watch out If underperformance would invalidate the entire experience, active investing is probably a poor fit.
- 5
Choose the appropriate path
Invest actively only if you accept the work and enjoy the process; otherwise use a diversified index fund and focus elsewhere.
Pro tip The passive choice is a valid allocation of attention, not an admission of failure.
In the wild
A physician enjoys medicine but follows stocks mainly because friends discuss market winners. After auditing her schedule, she realizes she cannot consistently study filings or update valuations. The deathbed test also reveals that trailing an index would make the effort feel wasted, so she automates contributions to a broad index fund.
→ She preserves exposure to long-term market growth while redirecting scarce time toward work and family.
An engineer spends weekends studying businesses because he genuinely enjoys connecting products, economics, and financial statements. He accepts that an index may outperform him and limits active positions to money he can manage patiently.
→ He adopts active investing as a disciplined lifelong practice rather than a promise of excess returns.
Common mistakes
Treating investing as a lottery ticket
Searching for the next Apple or Google encourages outcome chasing rather than disciplined valuation.
Skipping foundational tools
Attempting valuation without accounting, present value, and risk knowledge produces activity without dependable insight.
Requiring outperformance to enjoy the process
If active investing is worthwhile only when it beats an index, decades of effort may end in regret.
Is it for you?
Best for
It is best for individuals deciding whether to select securities or use passive index funds.
Not ideal for
It is not ideal for investors who must follow a professionally mandated active strategy.
From the transcript
“the first thing investors have to be asking is whether they should be doing evaluation in the first place”
“The process, not the outcome exactly, and you have to enjoy the process.”
“I invest actively because I truly enjoy this.”
From the episode
Ritholtz's Masters in Business: Aswath Damodaran Interview
Aswath Damodaran