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For those Bogleheads who have "play money" accounts (e.g., 5% of total investments set aside for trading or bitcoin or whatever) and who track their overall internal rate of return across their entire portfolio, do you include the "play money" allocation in that figure? My intuition is that it won't move the needle much either way.
Pardon typos, I'm probably using my fat thumbs on a tiny phone.
Well 100% return on 5% of the investment adds 5% to the weighted return. Loss of all of the 5% reduces the overall return by 5%. Out of an expected return of between 5% and 10% that result would be huge. Play money doesn't have much point if there is not a pretty good chance of the return ranging as much as +/-100%.