Any leveraged bond fund should have been able to as well, a carry trade from 2012 in European government bonds should have made many hundreds of percent
A futures fund should have been able to
A commodity options should have made monumental gains over the 85% that the S&P500 gave in 10 years, honestly should have made that in a month
A fund that did what Warren Buffet got rich doing, by buying up bad companies and improving, should still have gotten high returns
And finally, there were simply no cryptocurrency funds around!
The problem, I say smugly, is that these fund of funds were probably all macro funds with too many assets under management, making them hard to manage in the niche markets I proclaimed.
A fund with 1 billion AUM cannot manage that much real estate without eating into the management fees. There is not enough liquidity in the options market, and definitely not enough liquidity in cryptocurrencies.
But this unfortunately influences perception that "NOBODY" is able to make / promise more than 5% a year over several years. This is false but I'm not going to try to change your mind. Consolidating capital with someone managing <500k to around 25 million should be able to consistently take advantage of these less scalable opportunities for great profits. After all, it is how Warren Buffett himself got 100s of thousands of percentage gains in his hedge fund of $105,000.