Alternates refer to assets apart from stocks, bonds, interest rates, commodities or metals. They could incorporate hedge funds, long short funds, etc etc
My Alternates is Bitcoin only. Here is what I use:
Alts: (symbol=$BTCUSD and year < 2022) or (symbol=$BITO and year >= 2022) or (symbol=$IBIT and year >= 2024) and…
If you’re going to test using the above, ensure the account size is large enough to facilitate the pricing of BTCUSD, i.e. use a minimum of $1,000,000. Obviously going forward you use either BITO or IBIT