Frequently Asked Questions About Joshua Mayo ETF Investing Blueprint
21 answers covering everything from basics to advanced usage.
// Basics
What does the 'fruit basket' analogy mean in ETF investing?
The fruit basket is Joshua Mayo's analogy for an ETF. Instead of buying one piece of fruit — a single stock — you buy the whole pre-packed basket, which is a collection of hundreds of companies, in a single transaction. This means your money is spread out automatically, so if one company underperforms, it has a much smaller impact on your overall investment.
What are the three types of ETFs I can choose from?
Index ETFs track a market index like the S&P 500 (examples: VOO, SPY, VTI) and are best for most beginners. Sector ETFs focus on one industry like tech (example: VGT) and carry more concentrated risk. Bond ETFs hold government and corporate bonds — they're more stable but grow slowly and are generally not a primary vehicle for younger investors. The default recommendation is a broad index ETF.
What is a ticker symbol and how do I use it?
A ticker symbol is a short code that identifies an ETF, like VOO, VTI, or VGT. Once your brokerage account is funded, you type the ticker into the brokerage's search bar to find and purchase the ETF. It's the fastest way to locate the exact fund you evaluated, since two ETFs can have similar names but track very different things.
What is AUM and why should I care about it?
AUM stands for assets under management — the total amount of money invested in an ETF. A higher AUM means the fund is well-established and liquid, so it's easy to buy and sell. The blueprint recommends sticking with ETFs that have at least $1 billion in AUM to avoid small, illiquid, or unstable funds.
// How To
How do I run the three-checkpoint ETF evaluation?
Before buying any ETF, check three things: the expense ratio (aim for under 0.20%), the assets under management (at least $1 billion), and what index the ETF actually tracks. This takes about 30 seconds and prevents you from buying an overpriced, illiquid, or misunderstood fund. Always confirm what the ETF holds before buying, even if it sounds similar to a fund you already know.
How do I open a brokerage account and fund it?
Choose a brokerage like Fidelity, Vanguard, or Charles Schwab — all charge zero commissions on ETF trades. Sign up, decide between a taxable brokerage account or a Roth IRA based on your goal, then link and transfer money from your bank account into the brokerage. Once funded, you can search for your ETF by ticker and place an order.
How do I place a market order for an ETF?
Search the ETF by ticker in your brokerage, select 'buy,' then choose a market order — which buys the ETF immediately at the current price during market hours. Enter either the number of shares or a specific dollar amount (fractional shares let you invest exact amounts), review the order, and confirm. Market orders are best for most beginners; limit orders add unnecessary complexity when starting out.
How do I invest consistently every month?
Set a fixed amount you can invest each month — even $50 or $100 — and buy the same broad index ETF using fractional shares regardless of its share price. Consistency beats timing: keep contributing through both up and down markets. Many brokerages let you automate recurring investments so you never have to decide when to buy. The key is staying invested over the long term.
// Troubleshooting
Why is my ETF down and should I sell?
Your ETF is likely down because of normal short-term market volatility, not because anything is broken. You should not sell — selling during a dip locks in a loss on paper and causes you to miss the recovery that historically always follows. The investors who build real wealth did nothing during scary moments and kept contributing. Downturns are when consistent investing pays off most.
I only have $20 — is that enough to start?
Yes. Thanks to fractional shares, you can invest any dollar amount, even $20 or $50, and still get proportional returns. Share price is never a barrier. Being intimidated by a high share price and not investing at all is a common mistake. Start with whatever you have in a broad index ETF and add more consistently over time.
I bought too many overlapping ETFs — what should I do?
Simplify. Owning 10 ETFs across every sector and index doesn't increase diversification when one broad ETF like VOO already holds Apple, Microsoft, Amazon, Google, Nvidia, and hundreds more — it just adds noise. Consolidate into one or two solid broad market ETFs. For most people, that's enough. Overlapping funds duplicate holdings without meaningfully reducing risk.
I keep waiting for a dip before investing — is that a mistake?
Yes, this is a classic timing mistake. Waiting for a dip, then panic-selling when the market drops, then buying again at all-time highs after locking in a loss is a losing cycle. Nobody — not professional fund managers or analysts — can consistently predict short-term market moves. Time in the market beats timing the market, so it's better to start now and stay consistent.
// Comparisons
How does a broad index ETF compare to a sector ETF?
A broad index ETF like VTI spreads money across the entire market, while a sector ETF like VGT concentrates in one industry such as tech. Sector ETFs carry more risk — if tech struggles, the whole fund struggles. For beginners, a broad index ETF should be the primary holding; a sector ETF only makes sense as a smaller allocation when you have genuine conviction about an industry.
How does a market order compare to a limit order?
A market order buys the ETF immediately at the current price and is best for most beginners. A limit order only executes if the price drops to an amount you set, giving more control but adding complexity. When starting out, the extra control of a limit order isn't necessary and can leave you sitting uninvested waiting for a price that never comes.
How does this blueprint compare to hiring a financial advisor?
This blueprint teaches you to invest directly in low-cost ETFs yourself, avoiding management fees that erode returns, while a financial advisor charges ongoing fees and may put you in higher-cost funds. Even Warren Buffett recommends broad index ETFs for the majority of investors. For a beginner building wealth with a simple, consistent strategy, self-directed ETF investing through a zero-commission brokerage is often the more cost-effective path.
How do ETFs compare to individual stock picking for building wealth?
ETFs build wealth through diversification and consistency, while individual stock picking bets your outcome on a handful of companies you have to research and monitor. Since nobody can reliably predict short-term stock moves, a broad market ETF removes that pressure and spreads risk automatically. Most beginners build more reliable long-term wealth by holding one or two broad ETFs than by trying to pick winners.
// Advanced
Should I add a bond ETF to my portfolio as a young investor?
Generally no. Bond ETFs are more stable but grow more slowly, so they're not a primary vehicle for younger investors who have time on their side and should lean toward growth. Bond ETFs make more sense for balancing risk as you approach the time you'll need the money. A younger investor building long-term wealth is usually best served by a broad index ETF.
How much does the expense ratio actually cost me over 30 years?
The difference is dramatic because fees compound. A 0.03% expense ratio (like VOO) versus 1% may seem tiny annually, but over 20–30 years that gap compounds into tens of thousands of dollars in lost growth on a meaningful portfolio. That's why the blueprint treats the expense ratio as a non-negotiable checkpoint — always favor low-cost funds under 0.20%.
When does it make sense to hold both a broad index ETF and a sector ETF?
It makes sense when you already have a core broad index holding and have genuine long-term conviction about a specific industry. For example, someone bullish on tech might hold VOO as their primary position plus a smaller allocation to VGT. Always keep the broad index ETF as the main holding and run the three-checkpoint evaluation on the sector ETF, remembering it carries concentrated risk.
Why do two similar-sounding ETFs sometimes hold very different things?
ETF names can be misleading — two funds may sound alike but track completely different indexes or weight companies differently. That's why the third checkpoint in the evaluation is confirming what index the ETF actually tracks. Taking 30 seconds to verify the underlying holdings before buying prevents you from ending up in a fund that doesn't match your intended strategy.
Does the Roth IRA contribution limit change over time?
Yes. The Roth IRA contribution limit is $7,500/year as of 2026 and stair-steps up over time as it's periodically adjusted. If you're investing specifically for retirement, the Roth IRA's tax-free growth makes it a powerful account, but you're capped at the annual limit. For investing beyond that limit or with more flexibility, a taxable brokerage account with no contribution limit is the alternative.