The 2019 optimal portfolios for the month of May are now available to subscribers of ETFMathGuy. Just log in and select your discount broker.
You can now view the current optimal portfolios for the five discount brokers analyzed by ETFMathGuy. These portfolios cover nearly 1,500 ETFs currently offered commission-free from Ameritrade, ETrade, Fidelity, Schwab and Vanguard.
Portfolios now include updated ETF lineups from Ameritrade, ETrade and Vanguard
As we mentioned in our last post, Ameritrade, ETrade and Vanguard expanded their commission-free lineup. So, the portfolios for the month of May now consider these new funds. Here is a simple count of the number of commission-free ETFs now available from our five discount brokers. Note that IRA accounts exclude the 46 municipal bond ETFs discussed in our recent article.

However, this lineup change does not significantly alter the ETFMathGuy portfolios. Remember that several years of price history are necessary to build optimal portfolios. So, ETFs that haven’t been around very long will not be considered as part of the later stages of the portfolio construction process.
Unsure of which discount broker to pick?
If you haven’t yet settled on a discount broker that offers commission-free ETFs, consider the following. Last month, we showed the updated expense ratios and bid-ask spread for Fidelity and Schwab’s commission-free ETFs. Below is the updated information for our other three brokers, Ameritrade, ETrade and Vanguard.

It is pretty clear that, when it comes to expense ratios, Vanguard is the clear winner. The same can be said for Vanguard’s advantage with generally lower bid-ask spreads.

Bid-ask spreads, as of April 2019, for commission-free ETFs offered by Ameritrade, ETrade and Vanguard.
So, is Vanguard the best broker for commission-free ETF portfolios?
This is an excellent question. In terms of number of commission-free ETFs, Schwab is the leader. But, on the basis of cost, Vanguard is the clear winner. What about diversification? Perhaps the diversification benefit of the Schwab (or some of the other discount brokers) can offset their higher costs? We will explore this topic in a future blog post. Stay tuned!

ETFMathGuy is a subscription-based education service for investors interested in using commission-free ETFs in efficient portfolios.



















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