There's a ton of investing advice on TikTok. Most of it is bad, a new study says.

TikTok has become a major source of investing content, and a lot of people use it to inform decisions about what to do with their money. But be warned — "FinTok" is a minefield. A study from Finra and the CFA Institute published in 2023 found that 37% of Gen Z investors said social media was a big …