How relevant are nonprofessional investors?

In the US, if one had no "income" other than, say,...

Score: 10 Answers: 1

Can I get a refund of my Social security contribution if I a...

Score: 8 Answers: 1

What keeps an index ETF pegged to the index?

Score: 13 Answers: 4

Get back unwarranted California state tax

Score: 12 Answers: 1

How much will the capital gains tax be for selling off part ...

Score: 12 Answers: 2