With interest rates as high as they've been in 15 years, some are asking, "Are stocks necessary, or even advisable, for investments today?" This week, Kent Kramer looks at how cash vs stocks have performed over the years and shares important lessons learned.

With interest rates as high as they've been in 15 years, some are asking, "Are stocks necessary, or even advisable, for investments today?" This week, Kent Kramer looks at how cash vs stocks have performed over the years and shares important lessons learned.