u/AhhhNice-

So, I know that travelling at higher speeds, towards the speed of light, you age more slowly, relative to people at rest.

Let’s say I invest $10,000 in an all equity ETF (I’m assuming a 5% real rate of return with a MER of 0.17). An online calculator tells me I would need 96 years to get to a value of $1,000,000.

My question is, what fraction of the speed of light would I need to achieve in order to only age 5 years, while my investment grows to $1,000,000?