So here's the thing: with all the stuff you're asking to hold on to, you're making the bet that those extra things - your stocks you don't want to sell, your growth ETFs, your random bonds - will outperform just sticking it in ES3, or IWDA, or MBH.
How confident are you that you'll do better than the market?
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Seriously, though - a couple of points here. Firstly, just because an investment isn't currently higher than when you bought it is no reason to hang onto it... if anything, it's a reason to ditch it. It's a crap investment; get rid of it. Go full Marie Kondo on it.
Secondly, I'm not averse to having a "fun money" account where you trade stuff that interests you. But keep it small: 5% of your portfolio is plenty; don't do this unless you have a decently-sized portfolio (mid six figures or more); and don't let it take up too much of your time and your mental energy.
(I do that myself! I sometimes trade eurodollars, FX, or single stocks, just to keep my fingers on the pulse of the markets; but I always keep the size tiny compared to the rest of my portfolio, which is all in a 110-minus-age allocation.)
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So my answers to you would be "be realistic; do you actually think you can beat the rest of the market?". If you really do think you can beat the market, then it's fine to do that with a few percentage points of your portfolio; but the rest, you should park in a 110-minus-your-age allocation and leave alone.
And in a year or two's time, look back and be honest with yourself: have you actually beaten the market in your fun-money portfolio? Or have you actually cost yourself money?
Thanks for the inputs @ST, Mike, Mathstutor.

