I lost about £5,000 in the 2008 crash, and since then I've made investments in City Of London Investment Trust, Scottish Mortgage Investment Trust, and a handful of what used to be called 'unit trusts' ('mutual funds' in the USA, I believe). Most of these have been profitable, but I doubt whether I've done much more than recouping the earlier losses.
Scottish Mortgage's holdings, by the way, are not mortgages, nor are they in any way 'Scottish'.
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On a mountain range
I'm Doctor Strange