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Institution guide

Any broker, with ETFs

Index mutual funds tie you to the firm that runs them. ETFs do not. Build with broad-market ETFs and your portfolio works the same at Robinhood, M1, Merrill, E*Trade, Vanguard or anywhere else — and moves between them without ever being sold.

Works everywhere Transfers in kind Blended ~0.04%
U.S. stocks International Bonds

An example 60/20/20 mix. Choose your own →

Why portability is worth caring about

When you move a brokerage account, an ETF moves with it. The shares are simply re-registered at the new firm through the standard transfer system — nothing is sold, no gain is realised, no tax is owed. A proprietary index mutual fund cannot do that. Leaving means liquidating, and in a taxable account that means a tax bill chosen for you by a customer service decision you made years earlier.

If everything you own is in an IRA or 401(k), this matters very little. If you have a taxable account you expect to hold for decades, it is the single strongest argument for building in ETFs.

Three families that all work

Verify before you buy. Expense ratios and index methodologies change, and the figures on this page were compiled in early 2026. Every fund name below links to the provider's own page — check the current number there. A tenth of a basis point will not change your life, but a fund quietly changing what it tracks might.
iShares Core — the default recommendation here
SleeveETFIndex trackedExpense
U.S. stocksITOT Core S&P Total U.S. Stock MarketS&P Total Market Index0.03%
InternationalIXUS Core MSCI Total International StockMSCI ACWI ex USA IMI0.07%
BondsAGG Core U.S. Aggregate BondBloomberg U.S. Aggregate Bond0.03%
Vanguard ETFs — available at every brokerage, not just Vanguard
SleeveETFIndex trackedExpense
U.S. stocksVTI Total Stock MarketCRSP US Total Market0.03%
InternationalVXUS Total International StockFTSE Global All Cap ex US0.05%
BondsBND Total Bond MarketBloomberg U.S. Aggregate Float Adjusted0.03%
SPDR Portfolio — the cheapest headline numbers, with a split international sleeve
SleeveETFIndex trackedExpense
U.S. stocksSPTM Portfolio S&P 1500 CompositeS&P Composite 15000.03%
InternationalSPDW Developed World ex-US + SPEM Emerging MarketsS&P Developed ex-US / S&P Emerging0.03% / 0.07%
BondsSPAB Portfolio Aggregate BondBloomberg U.S. Aggregate Bond0.03%

All three families are interchangeable in practice. Do not hold two of them at once — overlapping total-market funds add complexity and, in a taxable account, wash-sale headaches, for no diversification benefit at all.

How to trade ETFs without hurting yourself

01

Use limit orders, not market orders

Set a limit a few cents above the current ask. On a fund this liquid you will almost always fill immediately, and you are protected if something strange happens in the order book.

02

Avoid the first and last fifteen minutes

Spreads are widest at the open and close, and an ETF's price can drift from the value of its holdings while the underlying market is still settling down. Mid-morning is unremarkable, which is what you want.

03

Check whether your broker offers fractional shares

Many now do, which removes the leftover-cash problem entirely. If yours does not, expect a small uninvested remainder after each contribution.

04

Never buy an ETF you cannot describe in one sentence

The ETF wrapper contains both the cheapest broad index funds ever made and some genuinely dangerous leveraged products. The wrapper tells you nothing; the index does.

A note on brokers with order flow economics. Commission-free trading at app-based brokers is typically funded by selling order flow. For someone buying three ETFs a month and holding for decades, the cost is negligible. It is worth knowing about, not worth reorganising your life around.