This is quite a loaded question although it's definitely one of my favorite topics!
I have a traditional IRA account with Vanguard and I don't mess with it very much and have invested in 4 different index funds.
I have a Stash account and have various holdings. My top performers right now are Tesla, Snapchat, Target, Vanguard Information Technology ETG, and First Trust NASDAQ CEA Cybersecurity ETF.
Vanguard is pretty good...I know we used them at some point and I can't even remember if we still have them or not.
I've actually stopped contributing into my Vanguard account because I haven't gotten my head around what am I missing out on. As it is, if I continue to contribute into it I'd be using taxed income and when I withdraw down the line in retirement, won't I get taxed again? If I go for a Roth IRA I'll be taxed now instead of later, but does that mean I will be double taxed?