such that even if 4 fail, one grows 10x over 5 years This seems really hard. Sounds like you're asking for some kind of coupling; a set of five stocks such tha

such that even if 4 fail, one grows 10x over 5 years This seems really hard. Sounds like you're asking for some kind of coupling; a set of five stocks such that if any four of them go to zero, one of them will definitely multiply by ten. If anyone here could do that reliably, they wouldn't be here. Whatever you end up investing in, don't forget to do it inside a taxfree ISA.